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Commit 46238ee4 authored by Yeqing Li's avatar Yeqing Li Committed by A. Unique TensorFlower
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Deprecating official/vision/detection folder. 

The folder is archived in the official/legacy/detection

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official/vision/detection/README.md
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# Object Detection Models on TensorFlow 2 # Object Detection Models on TensorFlow 2
**WARNING**: This repository will be deprecated and replaced by the solid This repository is deprecated and replaced by the solid
implementations inside vision/beta/. implementations inside vision/beta/. All the content has been moved to
[official/legacy/detection](https://github.com/tensorflow/models/tree/master/official/legacy/detection).
## Prerequsite
To get started, download the code from TensorFlow models GitHub repository or
use the pre-installed Google Cloud VM.
```bash
git clone https://github.com/tensorflow/models.git
```
Next, make sure to use TensorFlow 2.1+ on Google Cloud. Also here are
a few package you need to install to get started:
```bash
sudo apt-get install -y python-tk && \
pip3 install -r ~/models/official/requirements.txt
```
## Train RetinaNet on TPU
### Train a vanilla ResNet-50 based RetinaNet.
```bash
TPU_NAME="<your GCP TPU name>"
MODEL_DIR="<path to the directory to store model files>"
RESNET_CHECKPOINT="<path to the pre-trained Resnet-50 checkpoint>"
TRAIN_FILE_PATTERN="<path to the TFRecord training data>"
EVAL_FILE_PATTERN="<path to the TFRecord validation data>"
VAL_JSON_FILE="<path to the validation annotation JSON file>"
python3 ~/models/official/vision/detection/main.py \
--strategy_type=tpu \
--tpu="${TPU_NAME?}" \
--model_dir="${MODEL_DIR?}" \
--mode=train \
--params_override="{ type: retinanet, train: { checkpoint: { path: ${RESNET_CHECKPOINT?}, prefix: resnet50/ }, train_file_pattern: ${TRAIN_FILE_PATTERN?} }, eval: { val_json_file: ${VAL_JSON_FILE?}, eval_file_pattern: ${EVAL_FILE_PATTERN?} } }"
```
The pre-trained ResNet-50 checkpoint can be downloaded [here](https://storage.cloud.google.com/cloud-tpu-checkpoints/model-garden-vision/detection/resnet50-2018-02-07.tar.gz).
Note: The ResNet implementation under
[detection/](https://github.com/tensorflow/models/tree/master/official/vision/detection)
is currently different from the one under
[classification/](https://github.com/tensorflow/models/tree/master/official/vision/image_classification),
so the checkpoints are not compatible.
We will unify the implementation soon.
### Train a SpineNet-49 based RetinaNet.
```bash
TPU_NAME="<your GCP TPU name>"
MODEL_DIR="<path to the directory to store model files>"
TRAIN_FILE_PATTERN="<path to the TFRecord training data>"
EVAL_FILE_PATTERN="<path to the TFRecord validation data>"
VAL_JSON_FILE="<path to the validation annotation JSON file>"
python3 ~/models/official/vision/detection/main.py \
--strategy_type=tpu \
--tpu="${TPU_NAME?}" \
--model_dir="${MODEL_DIR?}" \
--mode=train \
--params_override="{ type: retinanet, architecture: {backbone: spinenet, multilevel_features: identity}, spinenet: {model_id: 49}, train_file_pattern: ${TRAIN_FILE_PATTERN?} }, eval: { val_json_file: ${VAL_JSON_FILE?}, eval_file_pattern: ${EVAL_FILE_PATTERN?} } }"
```
### Train a custom RetinaNet using the config file.
First, create a YAML config file, e.g. *my_retinanet.yaml*. This file specifies
the parameters to be overridden, which should at least include the following
fields.
```YAML
# my_retinanet.yaml
type: 'retinanet'
train:
train_file_pattern: <path to the TFRecord training data>
eval:
eval_file_pattern: <path to the TFRecord validation data>
val_json_file: <path to the validation annotation JSON file>
```
Once the YAML config file is created, you can launch the training using the
following command.
```bash
TPU_NAME="<your GCP TPU name>"
MODEL_DIR="<path to the directory to store model files>"
python3 ~/models/official/vision/detection/main.py \
--strategy_type=tpu \
--tpu="${TPU_NAME?}" \
--model_dir="${MODEL_DIR?}" \
--mode=train \
--config_file="my_retinanet.yaml"
```
## Train RetinaNet on GPU
Training on GPU is similar to that on TPU. The major change is the strategy
type (use "[mirrored](https://www.tensorflow.org/api_docs/python/tf/distribute/MirroredStrategy)" for multiple GPU and
"[one_device](https://www.tensorflow.org/api_docs/python/tf/distribute/OneDeviceStrategy)" for single GPU).
Multi-GPUs example (assuming there are 8GPU connected to the host):
```bash
MODEL_DIR="<path to the directory to store model files>"
python3 ~/models/official/vision/detection/main.py \
--strategy_type=mirrored \
--num_gpus=8 \
--model_dir="${MODEL_DIR?}" \
--mode=train \
--config_file="my_retinanet.yaml"
```
```bash
MODEL_DIR="<path to the directory to store model files>"
python3 ~/models/official/vision/detection/main.py \
--strategy_type=one_device \
--num_gpus=1 \
--model_dir="${MODEL_DIR?}" \
--mode=train \
--config_file="my_retinanet.yaml"
```
An example with inline configuration (YAML or JSON format):
```
python3 ~/models/official/vision/detection/main.py \
--model_dir=<model folder> \
--strategy_type=one_device \
--num_gpus=1 \
--mode=train \
--params_override="eval:
eval_file_pattern: <Eval TFRecord file pattern>
batch_size: 8
val_json_file: <COCO format groundtruth JSON file>
predict:
predict_batch_size: 8
architecture:
use_bfloat16: False
train:
total_steps: 1
batch_size: 8
train_file_pattern: <Eval TFRecord file pattern>
use_tpu: False
"
```
---
## Train Mask R-CNN on TPU
### Train a vanilla ResNet-50 based Mask R-CNN.
```bash
TPU_NAME="<your GCP TPU name>"
MODEL_DIR="<path to the directory to store model files>"
RESNET_CHECKPOINT="<path to the pre-trained Resnet-50 checkpoint>"
TRAIN_FILE_PATTERN="<path to the TFRecord training data>"
EVAL_FILE_PATTERN="<path to the TFRecord validation data>"
VAL_JSON_FILE="<path to the validation annotation JSON file>"
python3 ~/models/official/vision/detection/main.py \
--strategy_type=tpu \
--tpu=${TPU_NAME} \
--model_dir=${MODEL_DIR} \
--mode=train \
--model=mask_rcnn \
--params_override="{train: { checkpoint: { path: ${RESNET_CHECKPOINT}, prefix: resnet50/ }, train_file_pattern: ${TRAIN_FILE_PATTERN} }, eval: { val_json_file: ${VAL_JSON_FILE}, eval_file_pattern: ${EVAL_FILE_PATTERN} } }"
```
The pre-trained ResNet-50 checkpoint can be downloaded [here](https://storage.cloud.google.com/cloud-tpu-checkpoints/model-garden-vision/detection/resnet50-2018-02-07.tar.gz).
Note: The ResNet implementation under
[detection/](https://github.com/tensorflow/models/tree/master/official/vision/detection)
is currently different from the one under
[classification/](https://github.com/tensorflow/models/tree/master/official/vision/image_classification),
so the checkpoints are not compatible.
We will unify the implementation soon.
### Train a SpineNet-49 based Mask R-CNN.
```bash
TPU_NAME="<your GCP TPU name>"
MODEL_DIR="<path to the directory to store model files>"
TRAIN_FILE_PATTERN="<path to the TFRecord training data>"
EVAL_FILE_PATTERN="<path to the TFRecord validation data>"
VAL_JSON_FILE="<path to the validation annotation JSON file>"
python3 ~/models/official/vision/detection/main.py \
--strategy_type=tpu \
--tpu="${TPU_NAME?}" \
--model_dir="${MODEL_DIR?}" \
--mode=train \
--model=mask_rcnn \
--params_override="{architecture: {backbone: spinenet, multilevel_features: identity}, spinenet: {model_id: 49}, train_file_pattern: ${TRAIN_FILE_PATTERN?} }, eval: { val_json_file: ${VAL_JSON_FILE?}, eval_file_pattern: ${EVAL_FILE_PATTERN?} } }"
```
### Train a custom Mask R-CNN using the config file.
First, create a YAML config file, e.g. *my_maskrcnn.yaml*.
This file specifies the parameters to be overridden,
which should at least include the following fields.
```YAML
# my_maskrcnn.yaml
train:
train_file_pattern: <path to the TFRecord training data>
eval:
eval_file_pattern: <path to the TFRecord validation data>
val_json_file: <path to the validation annotation JSON file>
```
Once the YAML config file is created, you can launch the training using the
following command.
```bash
TPU_NAME="<your GCP TPU name>"
MODEL_DIR="<path to the directory to store model files>"
python3 ~/models/official/vision/detection/main.py \
--strategy_type=tpu \
--tpu=${TPU_NAME} \
--model_dir=${MODEL_DIR} \
--mode=train \
--model=mask_rcnn \
--config_file="my_maskrcnn.yaml"
```
## Train Mask R-CNN on GPU
Training on GPU is similar to that on TPU. The major change is the strategy type
(use
"[mirrored](https://www.tensorflow.org/api_docs/python/tf/distribute/MirroredStrategy)"
for multiple GPU and
"[one_device](https://www.tensorflow.org/api_docs/python/tf/distribute/OneDeviceStrategy)"
for single GPU).
Multi-GPUs example (assuming there are 8GPU connected to the host):
```bash
MODEL_DIR="<path to the directory to store model files>"
python3 ~/models/official/vision/detection/main.py \
--strategy_type=mirrored \
--num_gpus=8 \
--model_dir=${MODEL_DIR} \
--mode=train \
--model=mask_rcnn \
--config_file="my_maskrcnn.yaml"
```
```bash
MODEL_DIR="<path to the directory to store model files>"
python3 ~/models/official/vision/detection/main.py \
--strategy_type=one_device \
--num_gpus=1 \
--model_dir=${MODEL_DIR} \
--mode=train \
--model=mask_rcnn \
--config_file="my_maskrcnn.yaml"
```
An example with inline configuration (YAML or JSON format):
```
python3 ~/models/official/vision/detection/main.py \
--model_dir=<model folder> \
--strategy_type=one_device \
--num_gpus=1 \
--mode=train \
--model=mask_rcnn \
--params_override="eval:
eval_file_pattern: <Eval TFRecord file pattern>
batch_size: 8
val_json_file: <COCO format groundtruth JSON file>
predict:
predict_batch_size: 8
architecture:
use_bfloat16: False
train:
total_steps: 1000
batch_size: 8
train_file_pattern: <Eval TFRecord file pattern>
use_tpu: False
"
```
## Train ShapeMask on TPU
### Train a ResNet-50 based ShapeMask.
```bash
TPU_NAME="<your GCP TPU name>"
MODEL_DIR="<path to the directory to store model files>"
RESNET_CHECKPOINT="<path to the pre-trained Resnet-50 checkpoint>"
TRAIN_FILE_PATTERN="<path to the TFRecord training data>"
EVAL_FILE_PATTERN="<path to the TFRecord validation data>"
VAL_JSON_FILE="<path to the validation annotation JSON file>"
SHAPE_PRIOR_PATH="<path to shape priors>"
python3 ~/models/official/vision/detection/main.py \
--strategy_type=tpu \
--tpu=${TPU_NAME} \
--model_dir=${MODEL_DIR} \
--mode=train \
--model=shapemask \
--params_override="{train: { checkpoint: { path: ${RESNET_CHECKPOINT}, prefix: resnet50/ }, train_file_pattern: ${TRAIN_FILE_PATTERN} }, eval: { val_json_file: ${VAL_JSON_FILE}, eval_file_pattern: ${EVAL_FILE_PATTERN} } shapemask_head: {use_category_for_mask: true, shape_prior_path: ${SHAPE_PRIOR_PATH}} }"
```
The pre-trained ResNet-50 checkpoint can be downloaded [here](https://storage.cloud.google.com/cloud-tpu-checkpoints/model-garden-vision/detection/resnet50-2018-02-07.tar.gz).
The shape priors can be downloaded [here]
(https://storage.googleapis.com/cloud-tpu-checkpoints/shapemask/kmeans_class_priors_91x20x32x32.npy)
### Train a custom ShapeMask using the config file.
First, create a YAML config file, e.g. *my_shapemask.yaml*.
This file specifies the parameters to be overridden:
```YAML
# my_shapemask.yaml
train:
train_file_pattern: <path to the TFRecord training data>
total_steps: <total steps to train>
batch_size: <training batch size>
eval:
eval_file_pattern: <path to the TFRecord validation data>
val_json_file: <path to the validation annotation JSON file>
batch_size: <evaluation batch size>
shapemask_head:
shape_prior_path: <path to shape priors>
```
Once the YAML config file is created, you can launch the training using the
following command.
```bash
TPU_NAME="<your GCP TPU name>"
MODEL_DIR="<path to the directory to store model files>"
python3 ~/models/official/vision/detection/main.py \
--strategy_type=tpu \
--tpu=${TPU_NAME} \
--model_dir=${MODEL_DIR} \
--mode=train \
--model=shapemask \
--config_file="my_shapemask.yaml"
```
## Train ShapeMask on GPU
Training on GPU is similar to that on TPU. The major change is the strategy type
(use
"[mirrored](https://www.tensorflow.org/api_docs/python/tf/distribute/MirroredStrategy)"
for multiple GPU and
"[one_device](https://www.tensorflow.org/api_docs/python/tf/distribute/OneDeviceStrategy)"
for single GPU).
Multi-GPUs example (assuming there are 8GPU connected to the host):
```bash
MODEL_DIR="<path to the directory to store model files>"
python3 ~/models/official/vision/detection/main.py \
--strategy_type=mirrored \
--num_gpus=8 \
--model_dir=${MODEL_DIR} \
--mode=train \
--model=shapemask \
--config_file="my_shapemask.yaml"
```
A single GPU example
```bash
MODEL_DIR="<path to the directory to store model files>"
python3 ~/models/official/vision/detection/main.py \
--strategy_type=one_device \
--num_gpus=1 \
--model_dir=${MODEL_DIR} \
--mode=train \
--model=shapemask \
--config_file="my_shapemask.yaml"
```
An example with inline configuration (YAML or JSON format):
```
python3 ~/models/official/vision/detection/main.py \
--model_dir=<model folder> \
--strategy_type=one_device \
--num_gpus=1 \
--mode=train \
--model=shapemask \
--params_override="eval:
eval_file_pattern: <Eval TFRecord file pattern>
batch_size: 8
val_json_file: <COCO format groundtruth JSON file>
train:
total_steps: 1000
batch_size: 8
train_file_pattern: <Eval TFRecord file pattern>
use_tpu: False
"
```
### Run the evaluation (after training)
```
python3 /usr/share/models/official/vision/detection/main.py \
--strategy_type=tpu \
--tpu=${TPU_NAME} \
--model_dir=${MODEL_DIR} \
--mode=eval \
--model=shapemask \
--params_override="{eval: { val_json_file: ${VAL_JSON_FILE}, eval_file_pattern: ${EVAL_FILE_PATTERN}, eval_samples: 5000 } }"
```
`MODEL_DIR` needs to point to the trained path of ShapeMask model.
Change `strategy_type=mirrored` and `num_gpus=1` to run on a GPU.
Note: The JSON groundtruth file is useful for [COCO dataset](http://cocodataset.org/#home) and can be
downloaded from the [COCO website](http://cocodataset.org/#download). For custom dataset, it is unncessary because the groundtruth can be included in the TFRecord files.
## References
1. [Focal Loss for Dense Object Detection](https://arxiv.org/abs/1708.02002).
Tsung-Yi Lin, Priya Goyal, Ross Girshick, Kaiming He, and Piotr Dollár. IEEE
International Conference on Computer Vision (ICCV), 2017.
official/vision/detection/__init__.py
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...@@ -12,3 +12,5 @@ ...@@ -12,3 +12,5 @@
# See the License for the specific language governing permissions and # See the License for the specific language governing permissions and
# limitations under the License. # limitations under the License.
"""Deprecating the vision/detection folder."""
raise ImportError('This module has been moved to official/legacy/detection')
official/vision/detection/configs/__init__.py deleted 100644 → 0
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# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
official/vision/detection/configs/base_config.py deleted 100644 → 0
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# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Base config template."""
BACKBONES = [
'resnet',
'spinenet',
]
MULTILEVEL_FEATURES = [
'fpn',
'identity',
]
# pylint: disable=line-too-long
# For ResNet, this freezes the variables of the first conv1 and conv2_x
# layers [1], which leads to higher training speed and slightly better testing
# accuracy. The intuition is that the low-level architecture (e.g., ResNet-50)
# is able to capture low-level features such as edges; therefore, it does not
# need to be fine-tuned for the detection task.
# Note that we need to trailing `/` to avoid the incorrect match.
# [1]: https://github.com/facebookresearch/Detectron/blob/master/detectron/core/config.py#L198
RESNET_FROZEN_VAR_PREFIX = r'(resnet\d+)\/(conv2d(|_([1-9]|10))|batch_normalization(|_([1-9]|10)))\/'
REGULARIZATION_VAR_REGEX = r'.*(kernel|weight):0$'
BASE_CFG = {
'model_dir': '',
'use_tpu': True,
'strategy_type': 'tpu',
'isolate_session_state': False,
'train': {
'iterations_per_loop': 100,
'batch_size': 64,
'total_steps': 22500,
'num_cores_per_replica': None,
'input_partition_dims': None,
'optimizer': {
'type': 'momentum',
'momentum': 0.9,
'nesterov': True, # `False` is better for TPU v3-128.
},
'learning_rate': {
'type': 'step',
'warmup_learning_rate': 0.0067,
'warmup_steps': 500,
'init_learning_rate': 0.08,
'learning_rate_levels': [0.008, 0.0008],
'learning_rate_steps': [15000, 20000],
},
'checkpoint': {
'path': '',
'prefix': '',
},
# One can use 'RESNET_FROZEN_VAR_PREFIX' to speed up ResNet training
# when loading from the checkpoint.
'frozen_variable_prefix': '',
'train_file_pattern': '',
'train_dataset_type': 'tfrecord',
# TODO(b/142174042): Support transpose_input option.
'transpose_input': False,
'regularization_variable_regex': REGULARIZATION_VAR_REGEX,
'l2_weight_decay': 0.0001,
'gradient_clip_norm': 0.0,
'input_sharding': False,
},
'eval': {
'input_sharding': True,
'batch_size': 8,
'eval_samples': 5000,
'min_eval_interval': 180,
'eval_timeout': None,
'num_steps_per_eval': 1000,
'type': 'box',
'use_json_file': True,
'val_json_file': '',
'eval_file_pattern': '',
'eval_dataset_type': 'tfrecord',
# When visualizing images, set evaluation batch size to 40 to avoid
# potential OOM.
'num_images_to_visualize': 0,
},
'predict': {
'batch_size': 8,
},
'architecture': {
'backbone': 'resnet',
'min_level': 3,
'max_level': 7,
'multilevel_features': 'fpn',
'use_bfloat16': True,
# Note that `num_classes` is the total number of classes including
# one background classes whose index is 0.
'num_classes': 91,
},
'anchor': {
'num_scales': 3,
'aspect_ratios': [1.0, 2.0, 0.5],
'anchor_size': 4.0,
},
'norm_activation': {
'activation': 'relu',
'batch_norm_momentum': 0.997,
'batch_norm_epsilon': 1e-4,
'batch_norm_trainable': True,
'use_sync_bn': False,
},
'resnet': {
'resnet_depth': 50,
},
'spinenet': {
'model_id': '49',
},
'fpn': {
'fpn_feat_dims': 256,
'use_separable_conv': False,
'use_batch_norm': True,
},
'postprocess': {
'use_batched_nms': False,
'max_total_size': 100,
'nms_iou_threshold': 0.5,
'score_threshold': 0.05,
'pre_nms_num_boxes': 5000,
},
'enable_summary': False,
}
# pylint: enable=line-too-long
official/vision/detection/configs/factory.py deleted 100644 → 0
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# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Factory to provide model configs."""
from official.modeling.hyperparams import params_dict
from official.vision.detection.configs import maskrcnn_config
from official.vision.detection.configs import olnmask_config
from official.vision.detection.configs import retinanet_config
from official.vision.detection.configs import shapemask_config
def config_generator(model):
"""Model function generator."""
if model == 'retinanet':
default_config = retinanet_config.RETINANET_CFG
restrictions = retinanet_config.RETINANET_RESTRICTIONS
elif model == 'mask_rcnn':
default_config = maskrcnn_config.MASKRCNN_CFG
restrictions = maskrcnn_config.MASKRCNN_RESTRICTIONS
elif model == 'olnmask':
default_config = olnmask_config.OLNMASK_CFG
restrictions = olnmask_config.OLNMASK_RESTRICTIONS
elif model == 'shapemask':
default_config = shapemask_config.SHAPEMASK_CFG
restrictions = shapemask_config.SHAPEMASK_RESTRICTIONS
else:
raise ValueError('Model %s is not supported.' % model)
return params_dict.ParamsDict(default_config, restrictions)
official/vision/detection/configs/maskrcnn_config.py deleted 100644 → 0
View file @ 2b1924ca
# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Config template to train Mask R-CNN."""
from official.modeling.hyperparams import params_dict
from official.vision.detection.configs import base_config
# pylint: disable=line-too-long
MASKRCNN_CFG = params_dict.ParamsDict(base_config.BASE_CFG)
MASKRCNN_CFG.override({
'type': 'mask_rcnn',
'eval': {
'type': 'box_and_mask',
'num_images_to_visualize': 0,
},
'architecture': {
'parser': 'maskrcnn_parser',
'min_level': 2,
'max_level': 6,
'include_mask': True,
'mask_target_size': 28,
},
'maskrcnn_parser': {
'output_size': [1024, 1024],
'num_channels': 3,
'rpn_match_threshold': 0.7,
'rpn_unmatched_threshold': 0.3,
'rpn_batch_size_per_im': 256,
'rpn_fg_fraction': 0.5,
'aug_rand_hflip': True,
'aug_scale_min': 1.0,
'aug_scale_max': 1.0,
'skip_crowd_during_training': True,
'max_num_instances': 100,
'mask_crop_size': 112,
},
'anchor': {
'num_scales': 1,
'anchor_size': 8,
},
'rpn_head': {
'num_convs': 2,
'num_filters': 256,
'use_separable_conv': False,
'use_batch_norm': False,
},
'frcnn_head': {
'num_convs': 0,
'num_filters': 256,
'use_separable_conv': False,
'num_fcs': 2,
'fc_dims': 1024,
'use_batch_norm': False,
},
'mrcnn_head': {
'num_convs': 4,
'num_filters': 256,
'use_separable_conv': False,
'use_batch_norm': False,
},
'rpn_score_loss': {
'rpn_batch_size_per_im': 256,
},
'rpn_box_loss': {
'huber_loss_delta': 1.0 / 9.0,
},
'frcnn_box_loss': {
'huber_loss_delta': 1.0,
},
'roi_proposal': {
'rpn_pre_nms_top_k': 2000,
'rpn_post_nms_top_k': 1000,
'rpn_nms_threshold': 0.7,
'rpn_score_threshold': 0.0,
'rpn_min_size_threshold': 0.0,
'test_rpn_pre_nms_top_k': 1000,
'test_rpn_post_nms_top_k': 1000,
'test_rpn_nms_threshold': 0.7,
'test_rpn_score_threshold': 0.0,
'test_rpn_min_size_threshold': 0.0,
'use_batched_nms': False,
},
'roi_sampling': {
'num_samples_per_image': 512,
'fg_fraction': 0.25,
'fg_iou_thresh': 0.5,
'bg_iou_thresh_hi': 0.5,
'bg_iou_thresh_lo': 0.0,
'mix_gt_boxes': True,
},
'mask_sampling': {
'num_mask_samples_per_image': 128, # Typically = `num_samples_per_image` * `fg_fraction`.
},
'postprocess': {
'pre_nms_num_boxes': 1000,
},
}, is_strict=False)
MASKRCNN_RESTRICTIONS = [
]
# pylint: enable=line-too-long
official/vision/detection/configs/olnmask_config.py deleted 100644 → 0
View file @ 2b1924ca
# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Config template to train Object Localization Network (OLN)."""
from official.modeling.hyperparams import params_dict
from official.vision.detection.configs import base_config
# pylint: disable=line-too-long
OLNMASK_CFG = params_dict.ParamsDict(base_config.BASE_CFG)
OLNMASK_CFG.override({
'type': 'olnmask',
'eval': {
'type': 'oln_xclass_box',
'use_category': False,
'seen_class': 'voc',
'num_images_to_visualize': 0,
},
'architecture': {
'parser': 'olnmask_parser',
'min_level': 2,
'max_level': 6,
'include_rpn_class': False,
'include_frcnn_class': False,
'include_frcnn_box': True,
'include_mask': False,
'mask_target_size': 28,
'num_classes': 2,
},
'olnmask_parser': {
'output_size': [640, 640],
'num_channels': 3,
'rpn_match_threshold': 0.7,
'rpn_unmatched_threshold': 0.3,
'rpn_batch_size_per_im': 256,
'rpn_fg_fraction': 0.5,
'aug_rand_hflip': True,
'aug_scale_min': 0.5,
'aug_scale_max': 2.0,
'skip_crowd_during_training': True,
'max_num_instances': 100,
'mask_crop_size': 112,
# centerness targets.
'has_centerness': True,
'rpn_center_match_iou_threshold': 0.3,
'rpn_center_unmatched_iou_threshold': 0.1,
'rpn_num_center_samples_per_im': 256,
# class manipulation.
'class_agnostic': True,
'train_class': 'voc',
},
'anchor': {
'num_scales': 1,
'aspect_ratios': [1.0],
'anchor_size': 8,
},
'rpn_head': {
'num_convs': 2,
'num_filters': 256,
'use_separable_conv': False,
'use_batch_norm': False,
# RPN-Centerness learning {
'has_centerness': True, # }
},
'frcnn_head': {
'num_convs': 0,
'num_filters': 256,
'use_separable_conv': False,
'num_fcs': 2,
'fc_dims': 1024,
'use_batch_norm': False,
'has_scoring': True,
},
'mrcnn_head': {
'num_convs': 4,
'num_filters': 256,
'use_separable_conv': False,
'use_batch_norm': False,
'has_scoring': False,
},
'rpn_score_loss': {
'rpn_batch_size_per_im': 256,
},
'rpn_box_loss': {
'huber_loss_delta': 1.0 / 9.0,
},
'frcnn_box_loss': {
'huber_loss_delta': 1.0,
},
'frcnn_box_score_loss': {
'ignore_threshold': 0.3,
},
'roi_proposal': {
'rpn_pre_nms_top_k': 2000,
'rpn_post_nms_top_k': 2000,
'rpn_nms_threshold': 0.7,
'rpn_score_threshold': 0.0,
'rpn_min_size_threshold': 0.0,
'test_rpn_pre_nms_top_k': 2000,
'test_rpn_post_nms_top_k': 2000,
'test_rpn_nms_threshold': 0.7,
'test_rpn_score_threshold': 0.0,
'test_rpn_min_size_threshold': 0.0,
'use_batched_nms': False,
},
'roi_sampling': {
'num_samples_per_image': 512,
'fg_fraction': 0.25,
'fg_iou_thresh': 0.5,
'bg_iou_thresh_hi': 0.5,
'bg_iou_thresh_lo': 0.0,
'mix_gt_boxes': True,
},
'mask_sampling': {
'num_mask_samples_per_image': 128, # Typically = `num_samples_per_image` * `fg_fraction`.
},
'postprocess': {
'use_batched_nms': False,
'max_total_size': 100,
'nms_iou_threshold': 0.5,
'score_threshold': 0.00,
'pre_nms_num_boxes': 2000,
},
}, is_strict=False)
OLNMASK_RESTRICTIONS = [
# 'anchor.aspect_ratios == [1.0]',
# 'anchor.scales == 1',
]
# pylint: enable=line-too-long
official/vision/detection/configs/retinanet_config.py deleted 100644 → 0
View file @ 2b1924ca
# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Config template to train Retinanet."""
from official.modeling.hyperparams import params_dict
from official.vision.detection.configs import base_config
# pylint: disable=line-too-long
RETINANET_CFG = params_dict.ParamsDict(base_config.BASE_CFG)
RETINANET_CFG.override({
'type': 'retinanet',
'architecture': {
'parser': 'retinanet_parser',
},
'retinanet_parser': {
'output_size': [640, 640],
'num_channels': 3,
'match_threshold': 0.5,
'unmatched_threshold': 0.5,
'aug_rand_hflip': True,
'aug_scale_min': 1.0,
'aug_scale_max': 1.0,
'use_autoaugment': False,
'autoaugment_policy_name': 'v0',
'skip_crowd_during_training': True,
'max_num_instances': 100,
},
'retinanet_head': {
'num_convs': 4,
'num_filters': 256,
'use_separable_conv': False,
},
'retinanet_loss': {
'focal_loss_alpha': 0.25,
'focal_loss_gamma': 1.5,
'huber_loss_delta': 0.1,
'box_loss_weight': 50,
},
'enable_summary': True,
}, is_strict=False)
RETINANET_RESTRICTIONS = [
]
# pylint: enable=line-too-long
official/vision/detection/configs/shapemask_config.py deleted 100644 → 0
View file @ 2b1924ca
# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Config to train shapemask on COCO."""
from official.modeling.hyperparams import params_dict
from official.vision.detection.configs import base_config
SHAPEMASK_RESNET_FROZEN_VAR_PREFIX = r'(conv2d(|_([1-9]|10))|batch_normalization(|_([1-9]|10)))\/'
SHAPEMASK_CFG = params_dict.ParamsDict(base_config.BASE_CFG)
SHAPEMASK_CFG.override({
'type': 'shapemask',
'architecture': {
'parser': 'shapemask_parser',
'backbone': 'resnet',
'multilevel_features': 'fpn',
'outer_box_scale': 1.25,
},
'train': {
'total_steps': 45000,
'learning_rate': {
'learning_rate_steps': [30000, 40000],
},
'frozen_variable_prefix': SHAPEMASK_RESNET_FROZEN_VAR_PREFIX,
'regularization_variable_regex': None,
},
'eval': {
'type': 'shapemask_box_and_mask',
'mask_eval_class': 'all', # 'all', 'voc', or 'nonvoc'.
},
'shapemask_parser': {
'output_size': [640, 640],
'num_channels': 3,
'match_threshold': 0.5,
'unmatched_threshold': 0.5,
'aug_rand_hflip': True,
'aug_scale_min': 0.8,
'aug_scale_max': 1.2,
'skip_crowd_during_training': True,
'max_num_instances': 100,
# Shapemask specific parameters
'mask_train_class': 'all', # 'all', 'voc', or 'nonvoc'.
'use_category': True,
'outer_box_scale': 1.25,
'num_sampled_masks': 8,
'mask_crop_size': 32,
'mask_min_level': 3,
'mask_max_level': 5,
'box_jitter_scale': 0.025,
'upsample_factor': 4,
},
'retinanet_head': {
'num_convs': 4,
'num_filters': 256,
'use_separable_conv': False,
'use_batch_norm': True,
},
'shapemask_head': {
'num_downsample_channels': 128,
'mask_crop_size': 32,
'use_category_for_mask': True,
'num_convs': 4,
'upsample_factor': 4,
'shape_prior_path': '',
},
'retinanet_loss': {
'focal_loss_alpha': 0.4,
'focal_loss_gamma': 1.5,
'huber_loss_delta': 0.15,
'box_loss_weight': 50,
},
'shapemask_loss': {
'shape_prior_loss_weight': 0.1,
'coarse_mask_loss_weight': 1.0,
'fine_mask_loss_weight': 1.0,
},
}, is_strict=False)
SHAPEMASK_RESTRICTIONS = [
'shapemask_head.mask_crop_size == shapemask_parser.mask_crop_size',
'shapemask_head.upsample_factor == shapemask_parser.upsample_factor',
'shapemask_parser.outer_box_scale == architecture.outer_box_scale',
]
# pylint: enable=line-too-long
official/vision/detection/dataloader/__init__.py deleted 100644 → 0
View file @ 2b1924ca
# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
official/vision/detection/dataloader/anchor.py deleted 100644 → 0
View file @ 2b1924ca
# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Anchor box and labeler definition."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import collections
import tensorflow as tf
from official.vision.beta.ops import iou_similarity
from official.vision.detection.utils import box_utils
from official.vision.utils.object_detection import argmax_matcher
from official.vision.utils.object_detection import balanced_positive_negative_sampler
from official.vision.utils.object_detection import box_list
from official.vision.utils.object_detection import faster_rcnn_box_coder
from official.vision.utils.object_detection import target_assigner
class Anchor(object):
"""Anchor class for anchor-based object detectors."""
def __init__(self, min_level, max_level, num_scales, aspect_ratios,
anchor_size, image_size):
"""Constructs multiscale anchors.
Args:
min_level: integer number of minimum level of the output feature pyramid.
max_level: integer number of maximum level of the output feature pyramid.
num_scales: integer number representing intermediate scales added on each
level. For instances, num_scales=2 adds one additional intermediate
anchor scales [2^0, 2^0.5] on each level.
aspect_ratios: list of float numbers representing the aspect ratio anchors
added on each level. The number indicates the ratio of width to height.
For instances, aspect_ratios=[1.0, 2.0, 0.5] adds three anchors on each
scale level.
anchor_size: float number representing the scale of size of the base
anchor to the feature stride 2^level.
image_size: a list of integer numbers or Tensors representing [height,
width] of the input image size.The image_size should be divisible by the
largest feature stride 2^max_level.
"""
self.min_level = min_level
self.max_level = max_level
self.num_scales = num_scales
self.aspect_ratios = aspect_ratios
self.anchor_size = anchor_size
self.image_size = image_size
self.boxes = self._generate_boxes()
def _generate_boxes(self):
"""Generates multiscale anchor boxes.
Returns:
a Tensor of shape [N, 4], represneting anchor boxes of all levels
concatenated together.
"""
boxes_all = []
for level in range(self.min_level, self.max_level + 1):
boxes_l = []
for scale in range(self.num_scales):
for aspect_ratio in self.aspect_ratios:
stride = 2**level
intermediate_scale = 2**(scale / float(self.num_scales))
base_anchor_size = self.anchor_size * stride * intermediate_scale
aspect_x = aspect_ratio**0.5
aspect_y = aspect_ratio**-0.5
half_anchor_size_x = base_anchor_size * aspect_x / 2.0
half_anchor_size_y = base_anchor_size * aspect_y / 2.0
x = tf.range(stride / 2, self.image_size[1], stride)
y = tf.range(stride / 2, self.image_size[0], stride)
xv, yv = tf.meshgrid(x, y)
xv = tf.cast(tf.reshape(xv, [-1]), dtype=tf.float32)
yv = tf.cast(tf.reshape(yv, [-1]), dtype=tf.float32)
# Tensor shape Nx4.
boxes = tf.stack([
yv - half_anchor_size_y, xv - half_anchor_size_x,
yv + half_anchor_size_y, xv + half_anchor_size_x
],
axis=1)
boxes_l.append(boxes)
# Concat anchors on the same level to tensor shape NxAx4.
boxes_l = tf.stack(boxes_l, axis=1)
boxes_l = tf.reshape(boxes_l, [-1, 4])
boxes_all.append(boxes_l)
return tf.concat(boxes_all, axis=0)
def unpack_labels(self, labels):
"""Unpacks an array of labels into multiscales labels."""
unpacked_labels = collections.OrderedDict()
count = 0
for level in range(self.min_level, self.max_level + 1):
feat_size_y = tf.cast(self.image_size[0] / 2**level, tf.int32)
feat_size_x = tf.cast(self.image_size[1] / 2**level, tf.int32)
steps = feat_size_y * feat_size_x * self.anchors_per_location
unpacked_labels[level] = tf.reshape(labels[count:count + steps],
[feat_size_y, feat_size_x, -1])
count += steps
return unpacked_labels
@property
def anchors_per_location(self):
return self.num_scales * len(self.aspect_ratios)
@property
def multilevel_boxes(self):
return self.unpack_labels(self.boxes)
class AnchorLabeler(object):
"""Labeler for dense object detector."""
def __init__(self, anchor, match_threshold=0.5, unmatched_threshold=0.5):
"""Constructs anchor labeler to assign labels to anchors.
Args:
anchor: an instance of class Anchors.
match_threshold: a float number between 0 and 1 representing the
lower-bound threshold to assign positive labels for anchors. An anchor
with a score over the threshold is labeled positive.
unmatched_threshold: a float number between 0 and 1 representing the
upper-bound threshold to assign negative labels for anchors. An anchor
with a score below the threshold is labeled negative.
"""
similarity_calc = iou_similarity.IouSimilarity()
matcher = argmax_matcher.ArgMaxMatcher(
match_threshold,
unmatched_threshold=unmatched_threshold,
negatives_lower_than_unmatched=True,
force_match_for_each_row=True)
box_coder = faster_rcnn_box_coder.FasterRcnnBoxCoder()
self._target_assigner = target_assigner.TargetAssigner(
similarity_calc, matcher, box_coder)
self._anchor = anchor
self._match_threshold = match_threshold
self._unmatched_threshold = unmatched_threshold
def label_anchors(self, gt_boxes, gt_labels):
"""Labels anchors with ground truth inputs.
Args:
gt_boxes: A float tensor with shape [N, 4] representing groundtruth boxes.
For each row, it stores [y0, x0, y1, x1] for four corners of a box.
gt_labels: A integer tensor with shape [N, 1] representing groundtruth
classes.
Returns:
cls_targets_dict: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, num_anchors_per_location]. The height_l and
width_l represent the dimension of class logits at l-th level.
box_targets_dict: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, num_anchors_per_location * 4]. The height_l
and width_l represent the dimension of bounding box regression output at
l-th level.
num_positives: scalar tensor storing number of positives in an image.
"""
gt_box_list = box_list.BoxList(gt_boxes)
anchor_box_list = box_list.BoxList(self._anchor.boxes)
# The cls_weights, box_weights are not used.
cls_targets, _, box_targets, _, matches = self._target_assigner.assign(
anchor_box_list, gt_box_list, gt_labels)
# Labels definition in matches.match_results:
# (1) match_results[i]>=0, meaning that column i is matched with row
# match_results[i].
# (2) match_results[i]=-1, meaning that column i is not matched.
# (3) match_results[i]=-2, meaning that column i is ignored.
match_results = tf.expand_dims(matches.match_results, axis=1)
cls_targets = tf.cast(cls_targets, tf.int32)
cls_targets = tf.where(
tf.equal(match_results, -1), -tf.ones_like(cls_targets), cls_targets)
cls_targets = tf.where(
tf.equal(match_results, -2), -2 * tf.ones_like(cls_targets),
cls_targets)
# Unpacks labels into multi-level representations.
cls_targets_dict = self._anchor.unpack_labels(cls_targets)
box_targets_dict = self._anchor.unpack_labels(box_targets)
num_positives = tf.reduce_sum(
input_tensor=tf.cast(tf.greater(matches.match_results, -1), tf.float32))
return cls_targets_dict, box_targets_dict, num_positives
class RpnAnchorLabeler(AnchorLabeler):
"""Labeler for Region Proposal Network."""
def __init__(self,
anchor,
match_threshold=0.7,
unmatched_threshold=0.3,
rpn_batch_size_per_im=256,
rpn_fg_fraction=0.5):
AnchorLabeler.__init__(
self, anchor, match_threshold=0.7, unmatched_threshold=0.3)
self._rpn_batch_size_per_im = rpn_batch_size_per_im
self._rpn_fg_fraction = rpn_fg_fraction
def _get_rpn_samples(self, match_results):
"""Computes anchor labels.
This function performs subsampling for foreground (fg) and background (bg)
anchors.
Args:
match_results: A integer tensor with shape [N] representing the matching
results of anchors. (1) match_results[i]>=0, meaning that column i is
matched with row match_results[i]. (2) match_results[i]=-1, meaning that
column i is not matched. (3) match_results[i]=-2, meaning that column i
is ignored.
Returns:
score_targets: a integer tensor with the a shape of [N].
(1) score_targets[i]=1, the anchor is a positive sample.
(2) score_targets[i]=0, negative. (3) score_targets[i]=-1, the anchor is
don't care (ignore).
"""
sampler = (
balanced_positive_negative_sampler.BalancedPositiveNegativeSampler(
positive_fraction=self._rpn_fg_fraction, is_static=False))
# indicator includes both positive and negative labels.
# labels includes only positives labels.
# positives = indicator & labels.
# negatives = indicator & !labels.
# ignore = !indicator.
indicator = tf.greater(match_results, -2)
labels = tf.greater(match_results, -1)
samples = sampler.subsample(indicator, self._rpn_batch_size_per_im, labels)
positive_labels = tf.where(
tf.logical_and(samples, labels),
tf.constant(2, dtype=tf.int32, shape=match_results.shape),
tf.constant(0, dtype=tf.int32, shape=match_results.shape))
negative_labels = tf.where(
tf.logical_and(samples, tf.logical_not(labels)),
tf.constant(1, dtype=tf.int32, shape=match_results.shape),
tf.constant(0, dtype=tf.int32, shape=match_results.shape))
ignore_labels = tf.fill(match_results.shape, -1)
return (ignore_labels + positive_labels + negative_labels, positive_labels,
negative_labels)
def label_anchors(self, gt_boxes, gt_labels):
"""Labels anchors with ground truth inputs.
Args:
gt_boxes: A float tensor with shape [N, 4] representing groundtruth boxes.
For each row, it stores [y0, x0, y1, x1] for four corners of a box.
gt_labels: A integer tensor with shape [N, 1] representing groundtruth
classes.
Returns:
score_targets_dict: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, num_anchors]. The height_l and width_l
represent the dimension of class logits at l-th level.
box_targets_dict: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, num_anchors * 4]. The height_l and
width_l represent the dimension of bounding box regression output at
l-th level.
"""
gt_box_list = box_list.BoxList(gt_boxes)
anchor_box_list = box_list.BoxList(self._anchor.boxes)
# cls_targets, cls_weights, box_weights are not used.
_, _, box_targets, _, matches = self._target_assigner.assign(
anchor_box_list, gt_box_list, gt_labels)
# score_targets contains the subsampled positive and negative anchors.
score_targets, _, _ = self._get_rpn_samples(matches.match_results)
# Unpacks labels.
score_targets_dict = self._anchor.unpack_labels(score_targets)
box_targets_dict = self._anchor.unpack_labels(box_targets)
return score_targets_dict, box_targets_dict
class OlnAnchorLabeler(RpnAnchorLabeler):
"""Labeler for Region Proposal Network."""
def __init__(self,
anchor,
match_threshold=0.7,
unmatched_threshold=0.3,
rpn_batch_size_per_im=256,
rpn_fg_fraction=0.5,
has_centerness=False,
center_match_iou_threshold=0.3,
center_unmatched_iou_threshold=0.1,
num_center_samples_per_im=256):
"""Constructs rpn anchor labeler to assign labels and centerness to anchors.
Args:
anchor: an instance of class Anchors.
match_threshold: a float number between 0 and 1 representing the
lower-bound threshold to assign positive labels for anchors. An anchor
with a score over the threshold is labeled positive.
unmatched_threshold: a float number between 0 and 1 representing the
upper-bound threshold to assign negative labels for anchors. An anchor
with a score below the threshold is labeled negative.
rpn_batch_size_per_im: number of anchors that are sampled per image.
rpn_fg_fraction:
has_centerness: whether to include centerness target creation. An anchor
is paired with one centerness score.
center_match_iou_threshold: a float number between 0 and 1 representing
the lower-bound threshold to sample foreground anchors for centerness
regression. An anchor with a score over the threshold is sampled as
foreground sample for centerness regression. We sample mostly from the
foreground region (255 out of 256 samples). That is, we sample 255 vs 1
(foreground vs background) anchor points to learn centerness regression.
center_unmatched_iou_threshold: a float number between 0 and 1
representing the lower-bound threshold to sample background anchors for
centerness regression. An anchor with a score over the threshold is
sampled as foreground sample for centerness regression. We sample very
sparsely from the background region (1 out of 256 samples). That is, we
sample 255 vs 1 (foreground vs background) anchor points to learn
centerness regression.
num_center_samples_per_im: number of anchor points per image that are
sampled as centerness targets.
"""
super(OlnAnchorLabeler, self).__init__(
anchor, match_threshold=match_threshold,
unmatched_threshold=unmatched_threshold,
rpn_batch_size_per_im=rpn_batch_size_per_im,
rpn_fg_fraction=rpn_fg_fraction)
similarity_calc = iou_similarity.IouSimilarity()
matcher = argmax_matcher.ArgMaxMatcher(
match_threshold,
unmatched_threshold=unmatched_threshold,
negatives_lower_than_unmatched=True,
force_match_for_each_row=True)
box_coder = faster_rcnn_box_coder.FasterRcnnBoxCoder()
if has_centerness:
center_matcher = argmax_matcher.ArgMaxMatcher(
center_match_iou_threshold,
unmatched_threshold=center_match_iou_threshold,
negatives_lower_than_unmatched=True,
force_match_for_each_row=True,)
else:
center_matcher = None
self._target_assigner = target_assigner.OlnTargetAssigner(
similarity_calc, matcher, box_coder,
center_matcher=center_matcher)
self._num_center_samples_per_im = num_center_samples_per_im
self._center_unmatched_iou_threshold = center_unmatched_iou_threshold
self._rpn_batch_size_per_im = rpn_batch_size_per_im
self._rpn_fg_fraction = rpn_fg_fraction
def label_anchors_lrtb(self, gt_boxes, gt_labels):
"""Labels anchors with ground truth inputs.
Args:
gt_boxes: A float tensor with shape [N, 4] representing groundtruth boxes.
For each row, it stores [y0, x0, y1, x1] for four corners of a box.
gt_labels: A integer tensor with shape [N, 1] representing groundtruth
classes.
Returns:
score_targets_dict: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, num_anchors]. The height_l and width_l
represent the dimension of class logits at l-th level.
box_targets_dict: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, num_anchors * 4]. The height_l and
width_l represent the dimension of bounding box regression output at
l-th level.
lrtb_targets_dict: Same strucure to box_target_dict, except the regression
targets are converted from xyhw to lrtb format. Ordered dictionary with
keys [min_level, min_level+1, ..., max_level]. The values are tensor
with shape [height_l, width_l, num_anchors * 4]. The height_l and
width_l represent the dimension of bounding box regression output at
l-th level.
center_targets_dict: Same structure to score_tragets_dict, except the
scores are centerness values ranging from 0 to 1. Ordered dictionary
with keys [min_level, min_level+1, ..., max_level]. The values are
tensor with shape [height_l, width_l, num_anchors]. The height_l and
width_l represent the dimension of class logits at l-th level.
"""
gt_box_list = box_list.BoxList(gt_boxes)
anchor_box_list = box_list.BoxList(self._anchor.boxes)
# cls_targets, cls_weights, box_weights are not used.
(_, _, box_targets, _, matches,
matched_gt_box_list, matched_anchors_mask,
center_matched_gt_box_list, center_matched_anchors_mask,
matched_ious) = self._target_assigner.assign(
anchor_box_list, gt_box_list, gt_labels)
# Box lrtb_targets.
lrtb_targets, _ = box_utils.encode_boxes_lrtb(
matched_gt_box_list.data['boxes'],
anchor_box_list.data['boxes'],
weights=[1.0, 1.0, 1.0, 1.0])
lrtb_sanity = tf.logical_and(
tf.greater(tf.reduce_min(lrtb_targets, -1), 0.),
matched_anchors_mask)
# To broadcast lrtb_sanity to the same shape as lrtb_targets.
lrtb_sanity = tf.tile(tf.expand_dims(lrtb_sanity, 1),
[1, tf.shape(lrtb_targets)[1]])
lrtb_targets = tf.where(lrtb_sanity,
lrtb_targets,
tf.zeros_like(lrtb_targets))
# RPN anchor-gtbox iou values.
iou_targets = tf.where(tf.greater(matched_ious, 0.0),
matched_ious,
tf.zeros_like(matched_ious))
# Centerness_targets.
_, center_targets = box_utils.encode_boxes_lrtb(
center_matched_gt_box_list.data['boxes'],
anchor_box_list.data['boxes'],
weights=[1.0, 1.0, 1.0, 1.0])
# Positive-negative centerness sampler.
num_center_samples_per_im = self._num_center_samples_per_im
center_pos_neg_sampler = (
balanced_positive_negative_sampler.BalancedPositiveNegativeSampler(
positive_fraction=(1.- 1./num_center_samples_per_im),
is_static=False))
center_pos_neg_indicator = tf.logical_or(
center_matched_anchors_mask,
tf.less(iou_targets, self._center_unmatched_iou_threshold))
center_pos_labels = center_matched_anchors_mask
center_samples = center_pos_neg_sampler.subsample(
center_pos_neg_indicator, num_center_samples_per_im, center_pos_labels)
is_valid = center_samples
center_targets = tf.where(is_valid,
center_targets,
(-1) * tf.ones_like(center_targets))
# score_targets contains the subsampled positive and negative anchors.
score_targets, _, _ = self._get_rpn_samples(matches.match_results)
# Unpacks labels.
score_targets_dict = self._anchor.unpack_labels(score_targets)
box_targets_dict = self._anchor.unpack_labels(box_targets)
lrtb_targets_dict = self._anchor.unpack_labels(lrtb_targets)
center_targets_dict = self._anchor.unpack_labels(center_targets)
return (score_targets_dict, box_targets_dict,
lrtb_targets_dict, center_targets_dict)
official/vision/detection/dataloader/factory.py deleted 100644 → 0
View file @ 2b1924ca
# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Model architecture factory."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
from official.vision.detection.dataloader import maskrcnn_parser
from official.vision.detection.dataloader import olnmask_parser
from official.vision.detection.dataloader import retinanet_parser
from official.vision.detection.dataloader import shapemask_parser
def parser_generator(params, mode):
"""Generator function for various dataset parser."""
if params.architecture.parser == 'retinanet_parser':
anchor_params = params.anchor
parser_params = params.retinanet_parser
parser_fn = retinanet_parser.Parser(
output_size=parser_params.output_size,
min_level=params.architecture.min_level,
max_level=params.architecture.max_level,
num_scales=anchor_params.num_scales,
aspect_ratios=anchor_params.aspect_ratios,
anchor_size=anchor_params.anchor_size,
match_threshold=parser_params.match_threshold,
unmatched_threshold=parser_params.unmatched_threshold,
aug_rand_hflip=parser_params.aug_rand_hflip,
aug_scale_min=parser_params.aug_scale_min,
aug_scale_max=parser_params.aug_scale_max,
use_autoaugment=parser_params.use_autoaugment,
autoaugment_policy_name=parser_params.autoaugment_policy_name,
skip_crowd_during_training=parser_params.skip_crowd_during_training,
max_num_instances=parser_params.max_num_instances,
use_bfloat16=params.architecture.use_bfloat16,
mode=mode)
elif params.architecture.parser == 'maskrcnn_parser':
anchor_params = params.anchor
parser_params = params.maskrcnn_parser
parser_fn = maskrcnn_parser.Parser(
output_size=parser_params.output_size,
min_level=params.architecture.min_level,
max_level=params.architecture.max_level,
num_scales=anchor_params.num_scales,
aspect_ratios=anchor_params.aspect_ratios,
anchor_size=anchor_params.anchor_size,
rpn_match_threshold=parser_params.rpn_match_threshold,
rpn_unmatched_threshold=parser_params.rpn_unmatched_threshold,
rpn_batch_size_per_im=parser_params.rpn_batch_size_per_im,
rpn_fg_fraction=parser_params.rpn_fg_fraction,
aug_rand_hflip=parser_params.aug_rand_hflip,
aug_scale_min=parser_params.aug_scale_min,
aug_scale_max=parser_params.aug_scale_max,
skip_crowd_during_training=parser_params.skip_crowd_during_training,
max_num_instances=parser_params.max_num_instances,
include_mask=params.architecture.include_mask,
mask_crop_size=parser_params.mask_crop_size,
use_bfloat16=params.architecture.use_bfloat16,
mode=mode)
elif params.architecture.parser == 'olnmask_parser':
anchor_params = params.anchor
parser_params = params.olnmask_parser
parser_fn = olnmask_parser.Parser(
output_size=parser_params.output_size,
min_level=params.architecture.min_level,
max_level=params.architecture.max_level,
num_scales=anchor_params.num_scales,
aspect_ratios=anchor_params.aspect_ratios,
anchor_size=anchor_params.anchor_size,
rpn_match_threshold=parser_params.rpn_match_threshold,
rpn_unmatched_threshold=parser_params.rpn_unmatched_threshold,
rpn_batch_size_per_im=parser_params.rpn_batch_size_per_im,
rpn_fg_fraction=parser_params.rpn_fg_fraction,
aug_rand_hflip=parser_params.aug_rand_hflip,
aug_scale_min=parser_params.aug_scale_min,
aug_scale_max=parser_params.aug_scale_max,
skip_crowd_during_training=parser_params.skip_crowd_during_training,
max_num_instances=parser_params.max_num_instances,
include_mask=params.architecture.include_mask,
mask_crop_size=parser_params.mask_crop_size,
use_bfloat16=params.architecture.use_bfloat16,
mode=mode,
has_centerness=parser_params.has_centerness,
rpn_center_match_iou_threshold=(
parser_params.rpn_center_match_iou_threshold),
rpn_center_unmatched_iou_threshold=(
parser_params.rpn_center_unmatched_iou_threshold),
rpn_num_center_samples_per_im=(
parser_params.rpn_num_center_samples_per_im),
class_agnostic=parser_params.class_agnostic,
train_class=parser_params.train_class,)
elif params.architecture.parser == 'shapemask_parser':
anchor_params = params.anchor
parser_params = params.shapemask_parser
parser_fn = shapemask_parser.Parser(
output_size=parser_params.output_size,
min_level=params.architecture.min_level,
max_level=params.architecture.max_level,
num_scales=anchor_params.num_scales,
aspect_ratios=anchor_params.aspect_ratios,
anchor_size=anchor_params.anchor_size,
use_category=parser_params.use_category,
outer_box_scale=parser_params.outer_box_scale,
box_jitter_scale=parser_params.box_jitter_scale,
num_sampled_masks=parser_params.num_sampled_masks,
mask_crop_size=parser_params.mask_crop_size,
mask_min_level=parser_params.mask_min_level,
mask_max_level=parser_params.mask_max_level,
upsample_factor=parser_params.upsample_factor,
match_threshold=parser_params.match_threshold,
unmatched_threshold=parser_params.unmatched_threshold,
aug_rand_hflip=parser_params.aug_rand_hflip,
aug_scale_min=parser_params.aug_scale_min,
aug_scale_max=parser_params.aug_scale_max,
skip_crowd_during_training=parser_params.skip_crowd_during_training,
max_num_instances=parser_params.max_num_instances,
use_bfloat16=params.architecture.use_bfloat16,
mask_train_class=parser_params.mask_train_class,
mode=mode)
else:
raise ValueError('Parser %s is not supported.' % params.architecture.parser)
return parser_fn
official/vision/detection/dataloader/input_reader.py deleted 100644 → 0
View file @ 2b1924ca
# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Data loader and input processing."""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
import tensorflow as tf
from typing import Text, Optional
from official.modeling.hyperparams import params_dict
from official.vision.detection.dataloader import factory
from official.vision.detection.dataloader import mode_keys as ModeKeys
class InputFn(object):
"""Input function that creates dataset from files."""
def __init__(self,
file_pattern: Text,
params: params_dict.ParamsDict,
mode: Text,
batch_size: int,
num_examples: Optional[int] = -1):
"""Initialize.
Args:
file_pattern: the file pattern for the data example (TFRecords).
params: the parameter object for constructing example parser and model.
mode: ModeKeys.TRAIN or ModeKeys.Eval
batch_size: the data batch size.
num_examples: If positive, only takes this number of examples and raise
tf.errors.OutOfRangeError after that. If non-positive, it will be
ignored.
"""
assert file_pattern is not None
assert mode is not None
assert batch_size is not None
self._file_pattern = file_pattern
self._mode = mode
self._is_training = (mode == ModeKeys.TRAIN)
self._batch_size = batch_size
self._num_examples = num_examples
self._parser_fn = factory.parser_generator(params, mode)
self._dataset_fn = tf.data.TFRecordDataset
self._input_sharding = (not self._is_training)
try:
if self._is_training:
self._input_sharding = params.train.input_sharding
else:
self._input_sharding = params.eval.input_sharding
except AttributeError:
pass
def __call__(self, ctx=None, batch_size: int = None):
"""Provides tf.data.Dataset object.
Args:
ctx: context object.
batch_size: expected batch size input data.
Returns:
tf.data.Dataset object.
"""
if not batch_size:
batch_size = self._batch_size
assert batch_size is not None
dataset = tf.data.Dataset.list_files(
self._file_pattern, shuffle=self._is_training)
if self._input_sharding and ctx and ctx.num_input_pipelines > 1:
dataset = dataset.shard(ctx.num_input_pipelines, ctx.input_pipeline_id)
dataset = dataset.cache()
if self._is_training:
dataset = dataset.repeat()
dataset = dataset.interleave(
map_func=self._dataset_fn,
cycle_length=32,
num_parallel_calls=tf.data.experimental.AUTOTUNE)
if self._is_training:
dataset = dataset.shuffle(1000)
if self._num_examples > 0:
dataset = dataset.take(self._num_examples)
# Parses the fetched records to input tensors for model function.
dataset = dataset.map(
self._parser_fn, num_parallel_calls=tf.data.experimental.AUTOTUNE)
dataset = dataset.batch(batch_size, drop_remainder=True)
dataset = dataset.prefetch(tf.data.experimental.AUTOTUNE)
return dataset
official/vision/detection/dataloader/maskrcnn_parser.py deleted 100644 → 0
View file @ 2b1924ca
# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Data parser and processing for Mask R-CNN."""
import tensorflow as tf
from official.vision.detection.dataloader import anchor
from official.vision.detection.dataloader import mode_keys as ModeKeys
from official.vision.detection.dataloader import tf_example_decoder
from official.vision.detection.utils import box_utils
from official.vision.detection.utils import dataloader_utils
from official.vision.detection.utils import input_utils
class Parser(object):
"""Parser to parse an image and its annotations into a dictionary of tensors."""
def __init__(self,
output_size,
min_level,
max_level,
num_scales,
aspect_ratios,
anchor_size,
rpn_match_threshold=0.7,
rpn_unmatched_threshold=0.3,
rpn_batch_size_per_im=256,
rpn_fg_fraction=0.5,
aug_rand_hflip=False,
aug_scale_min=1.0,
aug_scale_max=1.0,
skip_crowd_during_training=True,
max_num_instances=100,
include_mask=False,
mask_crop_size=112,
use_bfloat16=True,
mode=None):
"""Initializes parameters for parsing annotations in the dataset.
Args:
output_size: `Tensor` or `list` for [height, width] of output image. The
output_size should be divided by the largest feature stride 2^max_level.
min_level: `int` number of minimum level of the output feature pyramid.
max_level: `int` number of maximum level of the output feature pyramid.
num_scales: `int` number representing intermediate scales added
on each level. For instances, num_scales=2 adds one additional
intermediate anchor scales [2^0, 2^0.5] on each level.
aspect_ratios: `list` of float numbers representing the aspect raito
anchors added on each level. The number indicates the ratio of width to
height. For instances, aspect_ratios=[1.0, 2.0, 0.5] adds three anchors
on each scale level.
anchor_size: `float` number representing the scale of size of the base
anchor to the feature stride 2^level.
rpn_match_threshold:
rpn_unmatched_threshold:
rpn_batch_size_per_im:
rpn_fg_fraction:
aug_rand_hflip: `bool`, if True, augment training with random
horizontal flip.
aug_scale_min: `float`, the minimum scale applied to `output_size` for
data augmentation during training.
aug_scale_max: `float`, the maximum scale applied to `output_size` for
data augmentation during training.
skip_crowd_during_training: `bool`, if True, skip annotations labeled with
`is_crowd` equals to 1.
max_num_instances: `int` number of maximum number of instances in an
image. The groundtruth data will be padded to `max_num_instances`.
include_mask: a bool to indicate whether parse mask groundtruth.
mask_crop_size: the size which groundtruth mask is cropped to.
use_bfloat16: `bool`, if True, cast output image to tf.bfloat16.
mode: a ModeKeys. Specifies if this is training, evaluation, prediction
or prediction with groundtruths in the outputs.
"""
self._mode = mode
self._max_num_instances = max_num_instances
self._skip_crowd_during_training = skip_crowd_during_training
self._is_training = (mode == ModeKeys.TRAIN)
self._example_decoder = tf_example_decoder.TfExampleDecoder(
include_mask=include_mask)
# Anchor.
self._output_size = output_size
self._min_level = min_level
self._max_level = max_level
self._num_scales = num_scales
self._aspect_ratios = aspect_ratios
self._anchor_size = anchor_size
# Target assigning.
self._rpn_match_threshold = rpn_match_threshold
self._rpn_unmatched_threshold = rpn_unmatched_threshold
self._rpn_batch_size_per_im = rpn_batch_size_per_im
self._rpn_fg_fraction = rpn_fg_fraction
# Data augmentation.
self._aug_rand_hflip = aug_rand_hflip
self._aug_scale_min = aug_scale_min
self._aug_scale_max = aug_scale_max
# Mask.
self._include_mask = include_mask
self._mask_crop_size = mask_crop_size
# Device.
self._use_bfloat16 = use_bfloat16
# Data is parsed depending on the model Modekey.
if mode == ModeKeys.TRAIN:
self._parse_fn = self._parse_train_data
elif mode == ModeKeys.EVAL:
self._parse_fn = self._parse_eval_data
elif mode == ModeKeys.PREDICT or mode == ModeKeys.PREDICT_WITH_GT:
self._parse_fn = self._parse_predict_data
else:
raise ValueError('mode is not defined.')
def __call__(self, value):
"""Parses data to an image and associated training labels.
Args:
value: a string tensor holding a serialized tf.Example proto.
Returns:
image, labels: if mode == ModeKeys.TRAIN. see _parse_train_data.
{'images': image, 'labels': labels}: if mode == ModeKeys.PREDICT
or ModeKeys.PREDICT_WITH_GT.
"""
with tf.name_scope('parser'):
data = self._example_decoder.decode(value)
return self._parse_fn(data)
def _parse_train_data(self, data):
"""Parses data for training.
Args:
data: the decoded tensor dictionary from TfExampleDecoder.
Returns:
image: image tensor that is preproessed to have normalized value and
dimension [output_size[0], output_size[1], 3]
labels: a dictionary of tensors used for training. The following describes
{key: value} pairs in the dictionary.
image_info: a 2D `Tensor` that encodes the information of the image and
the applied preprocessing. It is in the format of
[[original_height, original_width], [scaled_height, scaled_width],
anchor_boxes: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, 4] representing anchor boxes at each level.
rpn_score_targets: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, anchors_per_location]. The height_l and
width_l represent the dimension of class logits at l-th level.
rpn_box_targets: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, anchors_per_location * 4]. The height_l and
width_l represent the dimension of bounding box regression output at
l-th level.
gt_boxes: Groundtruth bounding box annotations. The box is represented
in [y1, x1, y2, x2] format. The coordinates are w.r.t the scaled
image that is fed to the network. The tennsor is padded with -1 to
the fixed dimension [self._max_num_instances, 4].
gt_classes: Groundtruth classes annotations. The tennsor is padded
with -1 to the fixed dimension [self._max_num_instances].
gt_masks: groundtrugh masks cropped by the bounding box and
resized to a fixed size determined by mask_crop_size.
"""
classes = data['groundtruth_classes']
boxes = data['groundtruth_boxes']
if self._include_mask:
masks = data['groundtruth_instance_masks']
is_crowds = data['groundtruth_is_crowd']
# Skips annotations with `is_crowd` = True.
if self._skip_crowd_during_training and self._is_training:
num_groundtruths = tf.shape(classes)[0]
with tf.control_dependencies([num_groundtruths, is_crowds]):
indices = tf.cond(
tf.greater(tf.size(is_crowds), 0),
lambda: tf.where(tf.logical_not(is_crowds))[:, 0],
lambda: tf.cast(tf.range(num_groundtruths), tf.int64))
classes = tf.gather(classes, indices)
boxes = tf.gather(boxes, indices)
if self._include_mask:
masks = tf.gather(masks, indices)
# Gets original image and its size.
image = data['image']
image_shape = tf.shape(image)[0:2]
# Normalizes image with mean and std pixel values.
image = input_utils.normalize_image(image)
# Flips image randomly during training.
if self._aug_rand_hflip:
if self._include_mask:
image, boxes, masks = input_utils.random_horizontal_flip(
image, boxes, masks)
else:
image, boxes = input_utils.random_horizontal_flip(
image, boxes)
# Converts boxes from normalized coordinates to pixel coordinates.
# Now the coordinates of boxes are w.r.t. the original image.
boxes = box_utils.denormalize_boxes(boxes, image_shape)
# Resizes and crops image.
image, image_info = input_utils.resize_and_crop_image(
image,
self._output_size,
padded_size=input_utils.compute_padded_size(
self._output_size, 2 ** self._max_level),
aug_scale_min=self._aug_scale_min,
aug_scale_max=self._aug_scale_max)
image_height, image_width, _ = image.get_shape().as_list()
# Resizes and crops boxes.
# Now the coordinates of boxes are w.r.t the scaled image.
image_scale = image_info[2, :]
offset = image_info[3, :]
boxes = input_utils.resize_and_crop_boxes(
boxes, image_scale, image_info[1, :], offset)
# Filters out ground truth boxes that are all zeros.
indices = box_utils.get_non_empty_box_indices(boxes)
boxes = tf.gather(boxes, indices)
classes = tf.gather(classes, indices)
if self._include_mask:
masks = tf.gather(masks, indices)
# Transfer boxes to the original image space and do normalization.
cropped_boxes = boxes + tf.tile(tf.expand_dims(offset, axis=0), [1, 2])
cropped_boxes /= tf.tile(tf.expand_dims(image_scale, axis=0), [1, 2])
cropped_boxes = box_utils.normalize_boxes(cropped_boxes, image_shape)
num_masks = tf.shape(masks)[0]
masks = tf.image.crop_and_resize(
tf.expand_dims(masks, axis=-1),
cropped_boxes,
box_indices=tf.range(num_masks, dtype=tf.int32),
crop_size=[self._mask_crop_size, self._mask_crop_size],
method='bilinear')
masks = tf.squeeze(masks, axis=-1)
# Assigns anchor targets.
# Note that after the target assignment, box targets are absolute pixel
# offsets w.r.t. the scaled image.
input_anchor = anchor.Anchor(
self._min_level,
self._max_level,
self._num_scales,
self._aspect_ratios,
self._anchor_size,
(image_height, image_width))
anchor_labeler = anchor.RpnAnchorLabeler(
input_anchor,
self._rpn_match_threshold,
self._rpn_unmatched_threshold,
self._rpn_batch_size_per_im,
self._rpn_fg_fraction)
rpn_score_targets, rpn_box_targets = anchor_labeler.label_anchors(
boxes, tf.cast(tf.expand_dims(classes, axis=-1), dtype=tf.float32))
# If bfloat16 is used, casts input image to tf.bfloat16.
if self._use_bfloat16:
image = tf.cast(image, dtype=tf.bfloat16)
inputs = {
'image': image,
'image_info': image_info,
}
# Packs labels for model_fn outputs.
labels = {
'anchor_boxes': input_anchor.multilevel_boxes,
'image_info': image_info,
'rpn_score_targets': rpn_score_targets,
'rpn_box_targets': rpn_box_targets,
}
inputs['gt_boxes'] = input_utils.pad_to_fixed_size(boxes,
self._max_num_instances,
-1)
inputs['gt_classes'] = input_utils.pad_to_fixed_size(
classes, self._max_num_instances, -1)
if self._include_mask:
inputs['gt_masks'] = input_utils.pad_to_fixed_size(
masks, self._max_num_instances, -1)
return inputs, labels
def _parse_eval_data(self, data):
"""Parses data for evaluation."""
raise NotImplementedError('Not implemented!')
def _parse_predict_data(self, data):
"""Parses data for prediction.
Args:
data: the decoded tensor dictionary from TfExampleDecoder.
Returns:
A dictionary of {'images': image, 'labels': labels} where
image: image tensor that is preproessed to have normalized value and
dimension [output_size[0], output_size[1], 3]
labels: a dictionary of tensors used for training. The following
describes {key: value} pairs in the dictionary.
source_ids: Source image id. Default value -1 if the source id is
empty in the groundtruth annotation.
image_info: a 2D `Tensor` that encodes the information of the image
and the applied preprocessing. It is in the format of
[[original_height, original_width], [scaled_height, scaled_width],
anchor_boxes: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, 4] representing anchor boxes at each
level.
"""
# Gets original image and its size.
image = data['image']
image_shape = tf.shape(image)[0:2]
# Normalizes image with mean and std pixel values.
image = input_utils.normalize_image(image)
# Resizes and crops image.
image, image_info = input_utils.resize_and_crop_image(
image,
self._output_size,
padded_size=input_utils.compute_padded_size(
self._output_size, 2 ** self._max_level),
aug_scale_min=1.0,
aug_scale_max=1.0)
image_height, image_width, _ = image.get_shape().as_list()
# If bfloat16 is used, casts input image to tf.bfloat16.
if self._use_bfloat16:
image = tf.cast(image, dtype=tf.bfloat16)
# Compute Anchor boxes.
input_anchor = anchor.Anchor(
self._min_level,
self._max_level,
self._num_scales,
self._aspect_ratios,
self._anchor_size,
(image_height, image_width))
labels = {
'image_info': image_info,
}
if self._mode == ModeKeys.PREDICT_WITH_GT:
# Converts boxes from normalized coordinates to pixel coordinates.
boxes = box_utils.denormalize_boxes(
data['groundtruth_boxes'], image_shape)
groundtruths = {
'source_id': data['source_id'],
'height': data['height'],
'width': data['width'],
'num_detections': tf.shape(data['groundtruth_classes']),
'boxes': boxes,
'classes': data['groundtruth_classes'],
'areas': data['groundtruth_area'],
'is_crowds': tf.cast(data['groundtruth_is_crowd'], tf.int32),
}
groundtruths['source_id'] = dataloader_utils.process_source_id(
groundtruths['source_id'])
groundtruths = dataloader_utils.pad_groundtruths_to_fixed_size(
groundtruths, self._max_num_instances)
# TODO(yeqing): Remove the `groundtrtuh` layer key (no longer needed).
labels['groundtruths'] = groundtruths
inputs = {
'image': image,
'image_info': image_info,
}
return inputs, labels
official/vision/detection/dataloader/mode_keys.py deleted 100644 → 0
View file @ 2b1924ca
# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Standard names for input dataloader modes.
The following standard keys are defined:
* `TRAIN`: training mode.
* `EVAL`: evaluation mode.
* `PREDICT`: prediction mode.
* `PREDICT_WITH_GT`: prediction mode with groundtruths in returned variables.
"""
from __future__ import absolute_import
from __future__ import division
from __future__ import print_function
TRAIN = 'train'
EVAL = 'eval'
PREDICT = 'predict'
PREDICT_WITH_GT = 'predict_with_gt'
official/vision/detection/dataloader/olnmask_parser.py deleted 100644 → 0
View file @ 2b1924ca
# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Data parser and processing for Mask R-CNN."""
import tensorflow as tf
from official.vision.detection.dataloader import anchor
from official.vision.detection.dataloader.maskrcnn_parser import Parser as MaskrcnnParser
from official.vision.detection.utils import box_utils
from official.vision.detection.utils import class_utils
from official.vision.detection.utils import input_utils
class Parser(MaskrcnnParser):
"""Parser to parse an image and its annotations into a dictionary of tensors."""
def __init__(self,
output_size,
min_level,
max_level,
num_scales,
aspect_ratios,
anchor_size,
rpn_match_threshold=0.7,
rpn_unmatched_threshold=0.3,
rpn_batch_size_per_im=256,
rpn_fg_fraction=0.5,
aug_rand_hflip=False,
aug_scale_min=1.0,
aug_scale_max=1.0,
skip_crowd_during_training=True,
max_num_instances=100,
include_mask=False,
mask_crop_size=112,
use_bfloat16=True,
mode=None,
# for centerness learning.
has_centerness=False,
rpn_center_match_iou_threshold=0.3,
rpn_center_unmatched_iou_threshold=0.1,
rpn_num_center_samples_per_im=256,
# for class manipulation.
class_agnostic=False,
train_class='all',
):
"""Initializes parameters for parsing annotations in the dataset.
Args:
output_size: `Tensor` or `list` for [height, width] of output image. The
output_size should be divided by the largest feature stride 2^max_level.
min_level: `int` number of minimum level of the output feature pyramid.
max_level: `int` number of maximum level of the output feature pyramid.
num_scales: `int` number representing intermediate scales added
on each level. For instances, num_scales=2 adds one additional
intermediate anchor scales [2^0, 2^0.5] on each level.
aspect_ratios: `list` of float numbers representing the aspect raito
anchors added on each level. The number indicates the ratio of width to
height. For instances, aspect_ratios=[1.0, 2.0, 0.5] adds three anchors
on each scale level.
anchor_size: `float` number representing the scale of size of the base
anchor to the feature stride 2^level.
rpn_match_threshold:
rpn_unmatched_threshold:
rpn_batch_size_per_im:
rpn_fg_fraction:
aug_rand_hflip: `bool`, if True, augment training with random
horizontal flip.
aug_scale_min: `float`, the minimum scale applied to `output_size` for
data augmentation during training.
aug_scale_max: `float`, the maximum scale applied to `output_size` for
data augmentation during training.
skip_crowd_during_training: `bool`, if True, skip annotations labeled with
`is_crowd` equals to 1.
max_num_instances: `int` number of maximum number of instances in an
image. The groundtruth data will be padded to `max_num_instances`.
include_mask: a bool to indicate whether parse mask groundtruth.
mask_crop_size: the size which groundtruth mask is cropped to.
use_bfloat16: `bool`, if True, cast output image to tf.bfloat16.
mode: a ModeKeys. Specifies if this is training, evaluation, prediction
or prediction with groundtruths in the outputs.
has_centerness: whether to create centerness targets
rpn_center_match_iou_threshold: iou threshold for valid centerness samples
,set to 0.3 by default.
rpn_center_unmatched_iou_threshold: iou threshold for invalid centerness
samples, set to 0.1 by default.
rpn_num_center_samples_per_im: number of centerness samples per image,
256 by default.
class_agnostic: whether to merge class ids into one foreground(=1) class,
False by default.
train_class: 'all' or 'voc' or 'nonvoc', 'all' by default.
"""
super(Parser, self).__init__(
output_size=output_size,
min_level=min_level,
max_level=max_level,
num_scales=num_scales,
aspect_ratios=aspect_ratios,
anchor_size=anchor_size,
rpn_match_threshold=rpn_match_threshold,
rpn_unmatched_threshold=rpn_unmatched_threshold,
rpn_batch_size_per_im=rpn_batch_size_per_im,
rpn_fg_fraction=rpn_fg_fraction,
aug_rand_hflip=aug_rand_hflip,
aug_scale_min=aug_scale_min,
aug_scale_max=aug_scale_max,
skip_crowd_during_training=skip_crowd_during_training,
max_num_instances=max_num_instances,
include_mask=include_mask,
mask_crop_size=mask_crop_size,
use_bfloat16=use_bfloat16,
mode=mode,)
# Centerness target assigning.
self._has_centerness = has_centerness
self._rpn_center_match_iou_threshold = rpn_center_match_iou_threshold
self._rpn_center_unmatched_iou_threshold = (
rpn_center_unmatched_iou_threshold)
self._rpn_num_center_samples_per_im = rpn_num_center_samples_per_im
# Class manipulation.
self._class_agnostic = class_agnostic
self._train_class = train_class
def _parse_train_data(self, data):
"""Parses data for training.
Args:
data: the decoded tensor dictionary from TfExampleDecoder.
Returns:
image: image tensor that is preproessed to have normalized value and
dimension [output_size[0], output_size[1], 3]
labels: a dictionary of tensors used for training. The following describes
{key: value} pairs in the dictionary.
image_info: a 2D `Tensor` that encodes the information of the image and
the applied preprocessing. It is in the format of
[[original_height, original_width], [scaled_height, scaled_width],
anchor_boxes: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, 4] representing anchor boxes at each level.
rpn_score_targets: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, anchors_per_location]. The height_l and
width_l represent the dimension of class logits at l-th level.
rpn_box_targets: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, anchors_per_location * 4]. The height_l and
width_l represent the dimension of bounding box regression output at
l-th level.
gt_boxes: Groundtruth bounding box annotations. The box is represented
in [y1, x1, y2, x2] format. The coordinates are w.r.t the scaled
image that is fed to the network. The tennsor is padded with -1 to
the fixed dimension [self._max_num_instances, 4].
gt_classes: Groundtruth classes annotations. The tennsor is padded
with -1 to the fixed dimension [self._max_num_instances].
gt_masks: groundtrugh masks cropped by the bounding box and
resized to a fixed size determined by mask_crop_size.
"""
classes = data['groundtruth_classes']
boxes = data['groundtruth_boxes']
if self._include_mask:
masks = data['groundtruth_instance_masks']
is_crowds = data['groundtruth_is_crowd']
# Skips annotations with `is_crowd` = True.
if self._skip_crowd_during_training and self._is_training:
num_groundtruths = tf.shape(classes)[0]
with tf.control_dependencies([num_groundtruths, is_crowds]):
indices = tf.cond(
tf.greater(tf.size(is_crowds), 0),
lambda: tf.where(tf.logical_not(is_crowds))[:, 0],
lambda: tf.cast(tf.range(num_groundtruths), tf.int64))
classes = tf.gather(classes, indices)
boxes = tf.gather(boxes, indices)
if self._include_mask:
masks = tf.gather(masks, indices)
# Gets original image and its size.
image = data['image']
image_shape = tf.shape(image)[0:2]
# Normalizes image with mean and std pixel values.
image = input_utils.normalize_image(image)
# Flips image randomly during training.
if self._aug_rand_hflip:
if self._include_mask:
image, boxes, masks = input_utils.random_horizontal_flip(
image, boxes, masks)
else:
image, boxes = input_utils.random_horizontal_flip(
image, boxes)
# Converts boxes from normalized coordinates to pixel coordinates.
# Now the coordinates of boxes are w.r.t. the original image.
boxes = box_utils.denormalize_boxes(boxes, image_shape)
# Resizes and crops image.
image, image_info = input_utils.resize_and_crop_image(
image,
self._output_size,
padded_size=input_utils.compute_padded_size(
self._output_size, 2 ** self._max_level),
aug_scale_min=self._aug_scale_min,
aug_scale_max=self._aug_scale_max)
image_height, image_width, _ = image.get_shape().as_list()
# Resizes and crops boxes.
# Now the coordinates of boxes are w.r.t the scaled image.
image_scale = image_info[2, :]
offset = image_info[3, :]
boxes = input_utils.resize_and_crop_boxes(
boxes, image_scale, image_info[1, :], offset)
# Filters out ground truth boxes that are all zeros.
indices = box_utils.get_non_empty_box_indices(boxes)
boxes = tf.gather(boxes, indices)
classes = tf.gather(classes, indices)
if self._include_mask:
masks = tf.gather(masks, indices)
# Transfer boxes to the original image space and do normalization.
cropped_boxes = boxes + tf.tile(tf.expand_dims(offset, axis=0), [1, 2])
cropped_boxes /= tf.tile(tf.expand_dims(image_scale, axis=0), [1, 2])
cropped_boxes = box_utils.normalize_boxes(cropped_boxes, image_shape)
num_masks = tf.shape(masks)[0]
masks = tf.image.crop_and_resize(
tf.expand_dims(masks, axis=-1),
cropped_boxes,
box_indices=tf.range(num_masks, dtype=tf.int32),
crop_size=[self._mask_crop_size, self._mask_crop_size],
method='bilinear')
masks = tf.squeeze(masks, axis=-1)
# Class manipulation.
# Filter out novel split classes from training.
if self._train_class != 'all':
valid_classes = tf.cast(
class_utils.coco_split_class_ids(self._train_class),
dtype=classes.dtype)
match = tf.reduce_any(tf.equal(
tf.expand_dims(valid_classes, 1),
tf.expand_dims(classes, 0)), 0)
# kill novel split classes and boxes.
boxes = tf.gather(boxes, tf.where(match)[:, 0])
classes = tf.gather(classes, tf.where(match)[:, 0])
if self._include_mask:
masks = tf.gather(masks, tf.where(match)[:, 0])
# Assigns anchor targets.
# Note that after the target assignment, box targets are absolute pixel
# offsets w.r.t. the scaled image.
input_anchor = anchor.Anchor(
self._min_level,
self._max_level,
self._num_scales,
self._aspect_ratios,
self._anchor_size,
(image_height, image_width))
anchor_labeler = anchor.OlnAnchorLabeler(
input_anchor,
self._rpn_match_threshold,
self._rpn_unmatched_threshold,
self._rpn_batch_size_per_im,
self._rpn_fg_fraction,
# for centerness target.
self._has_centerness,
self._rpn_center_match_iou_threshold,
self._rpn_center_unmatched_iou_threshold,
self._rpn_num_center_samples_per_im,)
if self._has_centerness:
rpn_score_targets, _, rpn_lrtb_targets, rpn_center_targets = (
anchor_labeler.label_anchors_lrtb(
gt_boxes=boxes,
gt_labels=tf.cast(
tf.expand_dims(classes, axis=-1), dtype=tf.float32)))
else:
rpn_score_targets, rpn_box_targets = anchor_labeler.label_anchors(
boxes, tf.cast(tf.expand_dims(classes, axis=-1), dtype=tf.float32))
# For base rpn, dummy placeholder for centerness target.
rpn_center_targets = rpn_score_targets.copy()
# If bfloat16 is used, casts input image to tf.bfloat16.
if self._use_bfloat16:
image = tf.cast(image, dtype=tf.bfloat16)
inputs = {
'image': image,
'image_info': image_info,
}
# Packs labels for model_fn outputs.
labels = {
'anchor_boxes': input_anchor.multilevel_boxes,
'image_info': image_info,
'rpn_score_targets': rpn_score_targets,
'rpn_box_targets': (rpn_lrtb_targets if self._has_centerness
else rpn_box_targets),
'rpn_center_targets': rpn_center_targets,
}
# If class_agnostic, convert to binary classes.
if self._class_agnostic:
classes = tf.where(tf.greater(classes, 0),
tf.ones_like(classes),
tf.zeros_like(classes))
inputs['gt_boxes'] = input_utils.pad_to_fixed_size(boxes,
self._max_num_instances,
-1)
inputs['gt_classes'] = input_utils.pad_to_fixed_size(
classes, self._max_num_instances, -1)
if self._include_mask:
inputs['gt_masks'] = input_utils.pad_to_fixed_size(
masks, self._max_num_instances, -1)
return inputs, labels
official/vision/detection/dataloader/retinanet_parser.py deleted 100644 → 0
View file @ 2b1924ca
# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Data parser and processing.
Parse image and ground truths in a dataset to training targets and package them
into (image, labels) tuple for RetinaNet.
T.-Y. Lin, P. Goyal, R. Girshick, K. He, and P. Dollar
Focal Loss for Dense Object Detection. arXiv:1708.02002
"""
import tensorflow as tf
from official.vision.detection.dataloader import anchor
from official.vision.detection.dataloader import mode_keys as ModeKeys
from official.vision.detection.dataloader import tf_example_decoder
from official.vision.detection.utils import box_utils
from official.vision.detection.utils import input_utils
def process_source_id(source_id):
"""Processes source_id to the right format."""
if source_id.dtype == tf.string:
source_id = tf.cast(tf.strings.to_number(source_id), tf.int32)
with tf.control_dependencies([source_id]):
source_id = tf.cond(
pred=tf.equal(tf.size(input=source_id), 0),
true_fn=lambda: tf.cast(tf.constant(-1), tf.int32),
false_fn=lambda: tf.identity(source_id))
return source_id
def pad_groundtruths_to_fixed_size(gt, n):
"""Pads the first dimension of groundtruths labels to the fixed size."""
gt['boxes'] = input_utils.pad_to_fixed_size(gt['boxes'], n, -1)
gt['is_crowds'] = input_utils.pad_to_fixed_size(gt['is_crowds'], n, 0)
gt['areas'] = input_utils.pad_to_fixed_size(gt['areas'], n, -1)
gt['classes'] = input_utils.pad_to_fixed_size(gt['classes'], n, -1)
return gt
class Parser(object):
"""Parser to parse an image and its annotations into a dictionary of tensors."""
def __init__(self,
output_size,
min_level,
max_level,
num_scales,
aspect_ratios,
anchor_size,
match_threshold=0.5,
unmatched_threshold=0.5,
aug_rand_hflip=False,
aug_scale_min=1.0,
aug_scale_max=1.0,
use_autoaugment=False,
autoaugment_policy_name='v0',
skip_crowd_during_training=True,
max_num_instances=100,
use_bfloat16=True,
mode=None):
"""Initializes parameters for parsing annotations in the dataset.
Args:
output_size: `Tensor` or `list` for [height, width] of output image. The
output_size should be divided by the largest feature stride 2^max_level.
min_level: `int` number of minimum level of the output feature pyramid.
max_level: `int` number of maximum level of the output feature pyramid.
num_scales: `int` number representing intermediate scales added on each
level. For instances, num_scales=2 adds one additional intermediate
anchor scales [2^0, 2^0.5] on each level.
aspect_ratios: `list` of float numbers representing the aspect raito
anchors added on each level. The number indicates the ratio of width to
height. For instances, aspect_ratios=[1.0, 2.0, 0.5] adds three anchors
on each scale level.
anchor_size: `float` number representing the scale of size of the base
anchor to the feature stride 2^level.
match_threshold: `float` number between 0 and 1 representing the
lower-bound threshold to assign positive labels for anchors. An anchor
with a score over the threshold is labeled positive.
unmatched_threshold: `float` number between 0 and 1 representing the
upper-bound threshold to assign negative labels for anchors. An anchor
with a score below the threshold is labeled negative.
aug_rand_hflip: `bool`, if True, augment training with random horizontal
flip.
aug_scale_min: `float`, the minimum scale applied to `output_size` for
data augmentation during training.
aug_scale_max: `float`, the maximum scale applied to `output_size` for
data augmentation during training.
use_autoaugment: `bool`, if True, use the AutoAugment augmentation policy
during training.
autoaugment_policy_name: `string` that specifies the name of the
AutoAugment policy that will be used during training.
skip_crowd_during_training: `bool`, if True, skip annotations labeled with
`is_crowd` equals to 1.
max_num_instances: `int` number of maximum number of instances in an
image. The groundtruth data will be padded to `max_num_instances`.
use_bfloat16: `bool`, if True, cast output image to tf.bfloat16.
mode: a ModeKeys. Specifies if this is training, evaluation, prediction or
prediction with groundtruths in the outputs.
"""
self._mode = mode
self._max_num_instances = max_num_instances
self._skip_crowd_during_training = skip_crowd_during_training
self._is_training = (mode == ModeKeys.TRAIN)
self._example_decoder = tf_example_decoder.TfExampleDecoder(
include_mask=False)
# Anchor.
self._output_size = output_size
self._min_level = min_level
self._max_level = max_level
self._num_scales = num_scales
self._aspect_ratios = aspect_ratios
self._anchor_size = anchor_size
self._match_threshold = match_threshold
self._unmatched_threshold = unmatched_threshold
# Data augmentation.
self._aug_rand_hflip = aug_rand_hflip
self._aug_scale_min = aug_scale_min
self._aug_scale_max = aug_scale_max
# Data Augmentation with AutoAugment.
self._use_autoaugment = use_autoaugment
self._autoaugment_policy_name = autoaugment_policy_name
# Device.
self._use_bfloat16 = use_bfloat16
# Data is parsed depending on the model Modekey.
if mode == ModeKeys.TRAIN:
self._parse_fn = self._parse_train_data
elif mode == ModeKeys.EVAL:
self._parse_fn = self._parse_eval_data
elif mode == ModeKeys.PREDICT or mode == ModeKeys.PREDICT_WITH_GT:
self._parse_fn = self._parse_predict_data
else:
raise ValueError('mode is not defined.')
def __call__(self, value):
"""Parses data to an image and associated training labels.
Args:
value: a string tensor holding a serialized tf.Example proto.
Returns:
image: image tensor that is preproessed to have normalized value and
dimension [output_size[0], output_size[1], 3]
labels:
cls_targets: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, anchors_per_location]. The height_l and
width_l represent the dimension of class logits at l-th level.
box_targets: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, anchors_per_location * 4]. The height_l and
width_l represent the dimension of bounding box regression output at
l-th level.
num_positives: number of positive anchors in the image.
anchor_boxes: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, 4] representing anchor boxes at each level.
image_info: a 2D `Tensor` that encodes the information of the image and
the applied preprocessing. It is in the format of
[[original_height, original_width], [scaled_height, scaled_width],
[y_scale, x_scale], [y_offset, x_offset]].
groundtruths:
source_id: source image id. Default value -1 if the source id is empty
in the groundtruth annotation.
boxes: groundtruth bounding box annotations. The box is represented in
[y1, x1, y2, x2] format. The tennsor is padded with -1 to the fixed
dimension [self._max_num_instances, 4].
classes: groundtruth classes annotations. The tennsor is padded with
-1 to the fixed dimension [self._max_num_instances].
areas: groundtruth areas annotations. The tennsor is padded with -1
to the fixed dimension [self._max_num_instances].
is_crowds: groundtruth annotations to indicate if an annotation
represents a group of instances by value {0, 1}. The tennsor is
padded with 0 to the fixed dimension [self._max_num_instances].
"""
with tf.name_scope('parser'):
data = self._example_decoder.decode(value)
return self._parse_fn(data)
def _parse_train_data(self, data):
"""Parses data for training and evaluation."""
classes = data['groundtruth_classes']
boxes = data['groundtruth_boxes']
is_crowds = data['groundtruth_is_crowd']
# Skips annotations with `is_crowd` = True.
if self._skip_crowd_during_training and self._is_training:
num_groundtrtuhs = tf.shape(input=classes)[0]
with tf.control_dependencies([num_groundtrtuhs, is_crowds]):
indices = tf.cond(
pred=tf.greater(tf.size(input=is_crowds), 0),
true_fn=lambda: tf.where(tf.logical_not(is_crowds))[:, 0],
false_fn=lambda: tf.cast(tf.range(num_groundtrtuhs), tf.int64))
classes = tf.gather(classes, indices)
boxes = tf.gather(boxes, indices)
# Gets original image and its size.
image = data['image']
image_shape = tf.shape(input=image)[0:2]
# Normalizes image with mean and std pixel values.
image = input_utils.normalize_image(image)
# Flips image randomly during training.
if self._aug_rand_hflip:
image, boxes = input_utils.random_horizontal_flip(image, boxes)
# Converts boxes from normalized coordinates to pixel coordinates.
boxes = box_utils.denormalize_boxes(boxes, image_shape)
# Resizes and crops image.
image, image_info = input_utils.resize_and_crop_image(
image,
self._output_size,
padded_size=input_utils.compute_padded_size(self._output_size,
2**self._max_level),
aug_scale_min=self._aug_scale_min,
aug_scale_max=self._aug_scale_max)
image_height, image_width, _ = image.get_shape().as_list()
# Resizes and crops boxes.
image_scale = image_info[2, :]
offset = image_info[3, :]
boxes = input_utils.resize_and_crop_boxes(boxes, image_scale,
image_info[1, :], offset)
# Filters out ground truth boxes that are all zeros.
indices = box_utils.get_non_empty_box_indices(boxes)
boxes = tf.gather(boxes, indices)
classes = tf.gather(classes, indices)
# Assigns anchors.
input_anchor = anchor.Anchor(self._min_level, self._max_level,
self._num_scales, self._aspect_ratios,
self._anchor_size, (image_height, image_width))
anchor_labeler = anchor.AnchorLabeler(input_anchor, self._match_threshold,
self._unmatched_threshold)
(cls_targets, box_targets, num_positives) = anchor_labeler.label_anchors(
boxes, tf.cast(tf.expand_dims(classes, axis=1), tf.float32))
# If bfloat16 is used, casts input image to tf.bfloat16.
if self._use_bfloat16:
image = tf.cast(image, dtype=tf.bfloat16)
# Packs labels for model_fn outputs.
labels = {
'cls_targets': cls_targets,
'box_targets': box_targets,
'anchor_boxes': input_anchor.multilevel_boxes,
'num_positives': num_positives,
'image_info': image_info,
}
return image, labels
def _parse_eval_data(self, data):
"""Parses data for training and evaluation."""
groundtruths = {}
classes = data['groundtruth_classes']
boxes = data['groundtruth_boxes']
# Gets original image and its size.
image = data['image']
image_shape = tf.shape(input=image)[0:2]
# Normalizes image with mean and std pixel values.
image = input_utils.normalize_image(image)
# Converts boxes from normalized coordinates to pixel coordinates.
boxes = box_utils.denormalize_boxes(boxes, image_shape)
# Resizes and crops image.
image, image_info = input_utils.resize_and_crop_image(
image,
self._output_size,
padded_size=input_utils.compute_padded_size(self._output_size,
2**self._max_level),
aug_scale_min=1.0,
aug_scale_max=1.0)
image_height, image_width, _ = image.get_shape().as_list()
# Resizes and crops boxes.
image_scale = image_info[2, :]
offset = image_info[3, :]
boxes = input_utils.resize_and_crop_boxes(boxes, image_scale,
image_info[1, :], offset)
# Filters out ground truth boxes that are all zeros.
indices = box_utils.get_non_empty_box_indices(boxes)
boxes = tf.gather(boxes, indices)
classes = tf.gather(classes, indices)
# Assigns anchors.
input_anchor = anchor.Anchor(self._min_level, self._max_level,
self._num_scales, self._aspect_ratios,
self._anchor_size, (image_height, image_width))
anchor_labeler = anchor.AnchorLabeler(input_anchor, self._match_threshold,
self._unmatched_threshold)
(cls_targets, box_targets, num_positives) = anchor_labeler.label_anchors(
boxes, tf.cast(tf.expand_dims(classes, axis=1), tf.float32))
# If bfloat16 is used, casts input image to tf.bfloat16.
if self._use_bfloat16:
image = tf.cast(image, dtype=tf.bfloat16)
# Sets up groundtruth data for evaluation.
groundtruths = {
'source_id':
data['source_id'],
'num_groundtrtuhs':
tf.shape(data['groundtruth_classes']),
'image_info':
image_info,
'boxes':
box_utils.denormalize_boxes(data['groundtruth_boxes'], image_shape),
'classes':
data['groundtruth_classes'],
'areas':
data['groundtruth_area'],
'is_crowds':
tf.cast(data['groundtruth_is_crowd'], tf.int32),
}
groundtruths['source_id'] = process_source_id(groundtruths['source_id'])
groundtruths = pad_groundtruths_to_fixed_size(groundtruths,
self._max_num_instances)
# Packs labels for model_fn outputs.
labels = {
'cls_targets': cls_targets,
'box_targets': box_targets,
'anchor_boxes': input_anchor.multilevel_boxes,
'num_positives': num_positives,
'image_info': image_info,
'groundtruths': groundtruths,
}
return image, labels
def _parse_predict_data(self, data):
"""Parses data for prediction."""
# Gets original image and its size.
image = data['image']
image_shape = tf.shape(input=image)[0:2]
# Normalizes image with mean and std pixel values.
image = input_utils.normalize_image(image)
# Resizes and crops image.
image, image_info = input_utils.resize_and_crop_image(
image,
self._output_size,
padded_size=input_utils.compute_padded_size(self._output_size,
2**self._max_level),
aug_scale_min=1.0,
aug_scale_max=1.0)
image_height, image_width, _ = image.get_shape().as_list()
# If bfloat16 is used, casts input image to tf.bfloat16.
if self._use_bfloat16:
image = tf.cast(image, dtype=tf.bfloat16)
# Compute Anchor boxes.
input_anchor = anchor.Anchor(self._min_level, self._max_level,
self._num_scales, self._aspect_ratios,
self._anchor_size, (image_height, image_width))
labels = {
'anchor_boxes': input_anchor.multilevel_boxes,
'image_info': image_info,
}
# If mode is PREDICT_WITH_GT, returns groundtruths and training targets
# in labels.
if self._mode == ModeKeys.PREDICT_WITH_GT:
# Converts boxes from normalized coordinates to pixel coordinates.
boxes = box_utils.denormalize_boxes(data['groundtruth_boxes'],
image_shape)
groundtruths = {
'source_id': data['source_id'],
'num_detections': tf.shape(data['groundtruth_classes']),
'boxes': boxes,
'classes': data['groundtruth_classes'],
'areas': data['groundtruth_area'],
'is_crowds': tf.cast(data['groundtruth_is_crowd'], tf.int32),
}
groundtruths['source_id'] = process_source_id(groundtruths['source_id'])
groundtruths = pad_groundtruths_to_fixed_size(groundtruths,
self._max_num_instances)
labels['groundtruths'] = groundtruths
# Computes training objective for evaluation loss.
classes = data['groundtruth_classes']
image_scale = image_info[2, :]
offset = image_info[3, :]
boxes = input_utils.resize_and_crop_boxes(boxes, image_scale,
image_info[1, :], offset)
# Filters out ground truth boxes that are all zeros.
indices = box_utils.get_non_empty_box_indices(boxes)
boxes = tf.gather(boxes, indices)
# Assigns anchors.
anchor_labeler = anchor.AnchorLabeler(input_anchor, self._match_threshold,
self._unmatched_threshold)
(cls_targets, box_targets, num_positives) = anchor_labeler.label_anchors(
boxes, tf.cast(tf.expand_dims(classes, axis=1), tf.float32))
labels['cls_targets'] = cls_targets
labels['box_targets'] = box_targets
labels['num_positives'] = num_positives
return image, labels
official/vision/detection/dataloader/shapemask_parser.py deleted 100644 → 0
View file @ 2b1924ca
# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Data parser and processing.
Parse image and ground truths in a dataset to training targets and package them
into (image, labels) tuple for ShapeMask.
Weicheng Kuo, Anelia Angelova, Jitendra Malik, Tsung-Yi Lin
ShapeMask: Learning to Segment Novel Objects by Refining Shape Priors.
arXiv:1904.03239.
"""
import tensorflow as tf
from official.vision.detection.dataloader import anchor
from official.vision.detection.dataloader import mode_keys as ModeKeys
from official.vision.detection.dataloader import tf_example_decoder
from official.vision.detection.utils import box_utils
from official.vision.detection.utils import class_utils
from official.vision.detection.utils import dataloader_utils
from official.vision.detection.utils import input_utils
def pad_to_size(input_tensor, size):
"""Pads data with zeros to a given length at the first dimension if needed.
Args:
input_tensor: `Tensor` with any dimension.
size: `int` number for the first dimension of output Tensor.
Returns:
`Tensor` with the first dimension padded to `size` if the first diemsion
is less than `size`, otherwise no padding.
"""
input_shape = tf.shape(input_tensor)
padding_shape = []
# Computes the padding length on the first dimension.
padding_length = tf.maximum(0, size - tf.shape(input_tensor)[0])
assert_length = tf.Assert(
tf.greater_equal(padding_length, 0), [padding_length])
with tf.control_dependencies([assert_length]):
padding_shape.append(padding_length)
# Copies shapes of the rest of input shape dimensions.
for i in range(1, len(input_shape)):
padding_shape.append(tf.shape(input=input_tensor)[i])
# Pads input tensor to the fixed first dimension.
paddings = tf.cast(tf.zeros(padding_shape), input_tensor.dtype)
padded_tensor = tf.concat([input_tensor, paddings], axis=0)
return padded_tensor
class Parser(object):
"""ShapeMask Parser to parse an image and its annotations into a dictionary of tensors."""
def __init__(self,
output_size,
min_level,
max_level,
num_scales,
aspect_ratios,
anchor_size,
use_category=True,
outer_box_scale=1.0,
box_jitter_scale=0.025,
num_sampled_masks=8,
mask_crop_size=32,
mask_min_level=3,
mask_max_level=5,
upsample_factor=4,
match_threshold=0.5,
unmatched_threshold=0.5,
aug_rand_hflip=False,
aug_scale_min=1.0,
aug_scale_max=1.0,
skip_crowd_during_training=True,
max_num_instances=100,
use_bfloat16=True,
mask_train_class='all',
mode=None):
"""Initializes parameters for parsing annotations in the dataset.
Args:
output_size: `Tensor` or `list` for [height, width] of output image. The
output_size should be divided by the largest feature stride 2^max_level.
min_level: `int` number of minimum level of the output feature pyramid.
max_level: `int` number of maximum level of the output feature pyramid.
num_scales: `int` number representing intermediate scales added
on each level. For instances, num_scales=2 adds one additional
intermediate anchor scales [2^0, 2^0.5] on each level.
aspect_ratios: `list` of float numbers representing the aspect raito
anchors added on each level. The number indicates the ratio of width to
height. For instances, aspect_ratios=[1.0, 2.0, 0.5] adds three anchors
on each scale level.
anchor_size: `float` number representing the scale of size of the base
anchor to the feature stride 2^level.
use_category: if `False`, treat all object in all classes in one
foreground category.
outer_box_scale: `float` number in a range of [1.0, inf) representing
the scale from object box to outer box. The mask branch predicts
instance mask enclosed in outer box.
box_jitter_scale: `float` number representing the noise magnitude to
jitter the training groundtruth boxes for mask branch.
num_sampled_masks: `int` number of sampled masks for training.
mask_crop_size: `list` for [height, width] of output training masks.
mask_min_level: `int` number indicating the minimum feature level to
obtain instance features.
mask_max_level: `int` number indicating the maximum feature level to
obtain instance features.
upsample_factor: `int` factor of upsampling the fine mask predictions.
match_threshold: `float` number between 0 and 1 representing the
lower-bound threshold to assign positive labels for anchors. An anchor
with a score over the threshold is labeled positive.
unmatched_threshold: `float` number between 0 and 1 representing the
upper-bound threshold to assign negative labels for anchors. An anchor
with a score below the threshold is labeled negative.
aug_rand_hflip: `bool`, if True, augment training with random
horizontal flip.
aug_scale_min: `float`, the minimum scale applied to `output_size` for
data augmentation during training.
aug_scale_max: `float`, the maximum scale applied to `output_size` for
data augmentation during training.
skip_crowd_during_training: `bool`, if True, skip annotations labeled with
`is_crowd` equals to 1.
max_num_instances: `int` number of maximum number of instances in an
image. The groundtruth data will be padded to `max_num_instances`.
use_bfloat16: `bool`, if True, cast output image to tf.bfloat16.
mask_train_class: a string of experiment mode: `all`, `voc` or `nonvoc`.
mode: a ModeKeys. Specifies if this is training, evaluation, prediction
or prediction with groundtruths in the outputs.
"""
self._mode = mode
self._mask_train_class = mask_train_class
self._max_num_instances = max_num_instances
self._skip_crowd_during_training = skip_crowd_during_training
self._is_training = (mode == ModeKeys.TRAIN)
self._example_decoder = tf_example_decoder.TfExampleDecoder(
include_mask=True)
# Anchor.
self._output_size = output_size
self._min_level = min_level
self._max_level = max_level
self._num_scales = num_scales
self._aspect_ratios = aspect_ratios
self._anchor_size = anchor_size
self._match_threshold = match_threshold
self._unmatched_threshold = unmatched_threshold
# Data augmentation.
self._aug_rand_hflip = aug_rand_hflip
self._aug_scale_min = aug_scale_min
self._aug_scale_max = aug_scale_max
# Device.
self._use_bfloat16 = use_bfloat16
# ShapeMask specific.
# Control of which category to use.
self._use_category = use_category
self._num_sampled_masks = num_sampled_masks
self._mask_crop_size = mask_crop_size
self._mask_min_level = mask_min_level
self._mask_max_level = mask_max_level
self._outer_box_scale = outer_box_scale
self._box_jitter_scale = box_jitter_scale
self._up_sample_factor = upsample_factor
# Data is parsed depending on the model Modekey.
if mode == ModeKeys.TRAIN:
self._parse_fn = self._parse_train_data
elif mode == ModeKeys.EVAL:
self._parse_fn = self._parse_eval_data
elif mode == ModeKeys.PREDICT or mode == ModeKeys.PREDICT_WITH_GT:
self._parse_fn = self._parse_predict_data
else:
raise ValueError('mode is not defined.')
def __call__(self, value):
"""Parses data to an image and associated training labels.
Args:
value: a string tensor holding a serialized tf.Example proto.
Returns:
inputs:
image: image tensor that is preproessed to have normalized value and
dimension [output_size[0], output_size[1], 3]
mask_boxes: sampled boxes that tightly enclose the training masks. The
box is represented in [y1, x1, y2, x2] format. The tensor is sampled
to the fixed dimension [self._num_sampled_masks, 4].
mask_outer_boxes: loose box that enclose sampled tight box. The
box is represented in [y1, x1, y2, x2] format. The tensor is sampled
to the fixed dimension [self._num_sampled_masks, 4].
mask_classes: the class ids of sampled training masks. The tensor has
shape [self._num_sampled_masks].
labels:
cls_targets: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, anchors_per_location]. The height_l and
width_l represent the dimension of class logits at l-th level.
box_targets: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, anchors_per_location * 4]. The height_l and
width_l represent the dimension of bounding box regression output at
l-th level.
num_positives: number of positive anchors in the image.
anchor_boxes: ordered dictionary with keys
[min_level, min_level+1, ..., max_level]. The values are tensor with
shape [height_l, width_l, 4] representing anchor boxes at each level.
image_scale: 2D float `Tensor` representing scale factors that apply
to [height, width] of input image.
mask_targets: training binary mask targets. The tensor has shape
[self._num_sampled_masks, self._mask_crop_size, self._mask_crop_size].
mask_is_valid: the binary tensor to indicate if the sampled masks are
valide. The sampled masks are invalid when no mask annotations are
included in the image. The tensor has shape [1].
groundtruths:
source_id: source image id. Default value -1 if the source id is empty
in the groundtruth annotation.
boxes: groundtruth bounding box annotations. The box is represented in
[y1, x1, y2, x2] format. The tensor is padded with -1 to the fixed
dimension [self._max_num_instances, 4].
classes: groundtruth classes annotations. The tensor is padded with
-1 to the fixed dimension [self._max_num_instances].
areas: groundtruth areas annotations. The tensor is padded with -1
to the fixed dimension [self._max_num_instances].
is_crowds: groundtruth annotations to indicate if an annotation
represents a group of instances by value {0, 1}. The tensor is
padded with 0 to the fixed dimension [self._max_num_instances].
"""
with tf.name_scope('parser'):
data = self._example_decoder.decode(value)
return self._parse_fn(data)
def _parse_train_data(self, data):
"""Parse data for ShapeMask training."""
classes = data['groundtruth_classes']
boxes = data['groundtruth_boxes']
masks = data['groundtruth_instance_masks']
is_crowds = data['groundtruth_is_crowd']
# Skips annotations with `is_crowd` = True.
if self._skip_crowd_during_training and self._is_training:
num_groundtrtuhs = tf.shape(classes)[0]
with tf.control_dependencies([num_groundtrtuhs, is_crowds]):
indices = tf.cond(
tf.greater(tf.size(is_crowds), 0),
lambda: tf.where(tf.logical_not(is_crowds))[:, 0],
lambda: tf.cast(tf.range(num_groundtrtuhs), tf.int64))
classes = tf.gather(classes, indices)
boxes = tf.gather(boxes, indices)
masks = tf.gather(masks, indices)
# Gets original image and its size.
image = data['image']
image_shape = tf.shape(image)[0:2]
# If not using category, makes all categories with id = 0.
if not self._use_category:
classes = tf.cast(tf.greater(classes, 0), dtype=tf.float32)
# Normalizes image with mean and std pixel values.
image = input_utils.normalize_image(image)
# Flips image randomly during training.
if self._aug_rand_hflip:
image, boxes, masks = input_utils.random_horizontal_flip(
image, boxes, masks)
# Converts boxes from normalized coordinates to pixel coordinates.
boxes = box_utils.denormalize_boxes(boxes, image_shape)
# Resizes and crops image.
image, image_info = input_utils.resize_and_crop_image(
image,
self._output_size,
self._output_size,
aug_scale_min=self._aug_scale_min,
aug_scale_max=self._aug_scale_max)
image_scale = image_info[2, :]
offset = image_info[3, :]
# Resizes and crops boxes and masks.
boxes = input_utils.resize_and_crop_boxes(
boxes, image_scale, image_info[1, :], offset)
# Filters out ground truth boxes that are all zeros.
indices = box_utils.get_non_empty_box_indices(boxes)
boxes = tf.gather(boxes, indices)
classes = tf.gather(classes, indices)
masks = tf.gather(masks, indices)
# Assigns anchors.
input_anchor = anchor.Anchor(
self._min_level, self._max_level, self._num_scales,
self._aspect_ratios, self._anchor_size, self._output_size)
anchor_labeler = anchor.AnchorLabeler(
input_anchor, self._match_threshold, self._unmatched_threshold)
(cls_targets,
box_targets,
num_positives) = anchor_labeler.label_anchors(
boxes,
tf.cast(tf.expand_dims(classes, axis=1), tf.float32))
# Sample groundtruth masks/boxes/classes for mask branch.
num_masks = tf.shape(masks)[0]
mask_shape = tf.shape(masks)[1:3]
# Pad sampled boxes/masks/classes to a constant batch size.
padded_boxes = pad_to_size(boxes, self._num_sampled_masks)
padded_classes = pad_to_size(classes, self._num_sampled_masks)
padded_masks = pad_to_size(masks, self._num_sampled_masks)
# Randomly sample groundtruth masks for mask branch training. For the image
# without groundtruth masks, it will sample the dummy padded tensors.
rand_indices = tf.random.shuffle(
tf.range(tf.maximum(num_masks, self._num_sampled_masks)))
rand_indices = tf.math.mod(rand_indices, tf.maximum(num_masks, 1))
rand_indices = rand_indices[0:self._num_sampled_masks]
rand_indices = tf.reshape(rand_indices, [self._num_sampled_masks])
sampled_boxes = tf.gather(padded_boxes, rand_indices)
sampled_classes = tf.gather(padded_classes, rand_indices)
sampled_masks = tf.gather(padded_masks, rand_indices)
# Jitter the sampled boxes to mimic the noisy detections.
sampled_boxes = box_utils.jitter_boxes(
sampled_boxes, noise_scale=self._box_jitter_scale)
sampled_boxes = box_utils.clip_boxes(sampled_boxes, self._output_size)
# Compute mask targets in feature crop. A feature crop fully contains a
# sampled box.
mask_outer_boxes = box_utils.compute_outer_boxes(
sampled_boxes, tf.shape(image)[0:2], scale=self._outer_box_scale)
mask_outer_boxes = box_utils.clip_boxes(mask_outer_boxes, self._output_size)
# Compensate the offset of mask_outer_boxes to map it back to original image
# scale.
mask_outer_boxes_ori = mask_outer_boxes
mask_outer_boxes_ori += tf.tile(tf.expand_dims(offset, axis=0), [1, 2])
mask_outer_boxes_ori /= tf.tile(tf.expand_dims(image_scale, axis=0), [1, 2])
norm_mask_outer_boxes_ori = box_utils.normalize_boxes(
mask_outer_boxes_ori, mask_shape)
# Set sampled_masks shape to [batch_size, height, width, 1].
sampled_masks = tf.cast(tf.expand_dims(sampled_masks, axis=-1), tf.float32)
mask_targets = tf.image.crop_and_resize(
sampled_masks,
norm_mask_outer_boxes_ori,
box_indices=tf.range(self._num_sampled_masks),
crop_size=[self._mask_crop_size, self._mask_crop_size],
method='bilinear',
extrapolation_value=0,
name='train_mask_targets')
mask_targets = tf.where(tf.greater_equal(mask_targets, 0.5),
tf.ones_like(mask_targets),
tf.zeros_like(mask_targets))
mask_targets = tf.squeeze(mask_targets, axis=-1)
if self._up_sample_factor > 1:
fine_mask_targets = tf.image.crop_and_resize(
sampled_masks,
norm_mask_outer_boxes_ori,
box_indices=tf.range(self._num_sampled_masks),
crop_size=[
self._mask_crop_size * self._up_sample_factor,
self._mask_crop_size * self._up_sample_factor
],
method='bilinear',
extrapolation_value=0,
name='train_mask_targets')
fine_mask_targets = tf.where(
tf.greater_equal(fine_mask_targets, 0.5),
tf.ones_like(fine_mask_targets), tf.zeros_like(fine_mask_targets))
fine_mask_targets = tf.squeeze(fine_mask_targets, axis=-1)
else:
fine_mask_targets = mask_targets
# If bfloat16 is used, casts input image to tf.bfloat16.
if self._use_bfloat16:
image = tf.cast(image, dtype=tf.bfloat16)
valid_image = tf.cast(tf.not_equal(num_masks, 0), tf.int32)
if self._mask_train_class == 'all':
mask_is_valid = valid_image * tf.ones_like(sampled_classes, tf.int32)
else:
# Get the intersection of sampled classes with training splits.
mask_valid_classes = tf.cast(
tf.expand_dims(
class_utils.coco_split_class_ids(self._mask_train_class), 1),
sampled_classes.dtype)
match = tf.reduce_any(
tf.equal(tf.expand_dims(sampled_classes, 0), mask_valid_classes), 0)
mask_is_valid = valid_image * tf.cast(match, tf.int32)
# Packs labels for model_fn outputs.
labels = {
'cls_targets': cls_targets,
'box_targets': box_targets,
'anchor_boxes': input_anchor.multilevel_boxes,
'num_positives': num_positives,
'image_info': image_info,
# For ShapeMask.
'mask_targets': mask_targets,
'fine_mask_targets': fine_mask_targets,
'mask_is_valid': mask_is_valid,
}
inputs = {
'image': image,
'image_info': image_info,
'mask_boxes': sampled_boxes,
'mask_outer_boxes': mask_outer_boxes,
'mask_classes': sampled_classes,
}
return inputs, labels
def _parse_predict_data(self, data):
"""Parse data for ShapeMask training."""
classes = data['groundtruth_classes']
boxes = data['groundtruth_boxes']
masks = data['groundtruth_instance_masks']
# Gets original image and its size.
image = data['image']
image_shape = tf.shape(image)[0:2]
# If not using category, makes all categories with id = 0.
if not self._use_category:
classes = tf.cast(tf.greater(classes, 0), dtype=tf.float32)
# Normalizes image with mean and std pixel values.
image = input_utils.normalize_image(image)
# Converts boxes from normalized coordinates to pixel coordinates.
boxes = box_utils.denormalize_boxes(boxes, image_shape)
# Resizes and crops image.
image, image_info = input_utils.resize_and_crop_image(
image,
self._output_size,
self._output_size,
aug_scale_min=1.0,
aug_scale_max=1.0)
image_scale = image_info[2, :]
offset = image_info[3, :]
# Resizes and crops boxes and masks.
boxes = input_utils.resize_and_crop_boxes(
boxes, image_scale, image_info[1, :], offset)
masks = input_utils.resize_and_crop_masks(
tf.expand_dims(masks, axis=-1), image_scale, self._output_size, offset)
# Filters out ground truth boxes that are all zeros.
indices = box_utils.get_non_empty_box_indices(boxes)
boxes = tf.gather(boxes, indices)
classes = tf.gather(classes, indices)
# Assigns anchors.
input_anchor = anchor.Anchor(
self._min_level, self._max_level, self._num_scales,
self._aspect_ratios, self._anchor_size, self._output_size)
anchor_labeler = anchor.AnchorLabeler(
input_anchor, self._match_threshold, self._unmatched_threshold)
# If bfloat16 is used, casts input image to tf.bfloat16.
if self._use_bfloat16:
image = tf.cast(image, dtype=tf.bfloat16)
labels = {
'anchor_boxes': input_anchor.multilevel_boxes,
'image_info': image_info,
}
if self._mode == ModeKeys.PREDICT_WITH_GT:
# Converts boxes from normalized coordinates to pixel coordinates.
groundtruths = {
'source_id': data['source_id'],
'height': data['height'],
'width': data['width'],
'num_detections': tf.shape(data['groundtruth_classes']),
'boxes': box_utils.denormalize_boxes(
data['groundtruth_boxes'], image_shape),
'classes': data['groundtruth_classes'],
# 'masks': tf.squeeze(masks, axis=-1),
'areas': data['groundtruth_area'],
'is_crowds': tf.cast(data['groundtruth_is_crowd'], tf.int32),
}
groundtruths['source_id'] = dataloader_utils.process_source_id(
groundtruths['source_id'])
groundtruths = dataloader_utils.pad_groundtruths_to_fixed_size(
groundtruths, self._max_num_instances)
# Computes training labels.
(cls_targets,
box_targets,
num_positives) = anchor_labeler.label_anchors(
boxes,
tf.cast(tf.expand_dims(classes, axis=1), tf.float32))
# Packs labels for model_fn outputs.
labels.update({
'cls_targets': cls_targets,
'box_targets': box_targets,
'num_positives': num_positives,
'groundtruths': groundtruths,
})
inputs = {
'image': image,
'image_info': image_info,
}
return inputs, labels
official/vision/detection/dataloader/tf_example_decoder.py deleted 100644 → 0
View file @ 2b1924ca
# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Tensorflow Example proto decoder for object detection.
A decoder to decode string tensors containing serialized tensorflow.Example
protos for object detection.
"""
import tensorflow as tf
class TfExampleDecoder(object):
"""Tensorflow Example proto decoder."""
def __init__(self, include_mask=False):
self._include_mask = include_mask
self._keys_to_features = {
'image/encoded':
tf.io.FixedLenFeature((), tf.string),
'image/source_id':
tf.io.FixedLenFeature((), tf.string),
'image/height':
tf.io.FixedLenFeature((), tf.int64),
'image/width':
tf.io.FixedLenFeature((), tf.int64),
'image/object/bbox/xmin':
tf.io.VarLenFeature(tf.float32),
'image/object/bbox/xmax':
tf.io.VarLenFeature(tf.float32),
'image/object/bbox/ymin':
tf.io.VarLenFeature(tf.float32),
'image/object/bbox/ymax':
tf.io.VarLenFeature(tf.float32),
'image/object/class/label':
tf.io.VarLenFeature(tf.int64),
'image/object/area':
tf.io.VarLenFeature(tf.float32),
'image/object/is_crowd':
tf.io.VarLenFeature(tf.int64),
}
if include_mask:
self._keys_to_features.update({
'image/object/mask':
tf.io.VarLenFeature(tf.string),
})
def _decode_image(self, parsed_tensors):
"""Decodes the image and set its static shape."""
image = tf.io.decode_image(parsed_tensors['image/encoded'], channels=3)
image.set_shape([None, None, 3])
return image
def _decode_boxes(self, parsed_tensors):
"""Concat box coordinates in the format of [ymin, xmin, ymax, xmax]."""
xmin = parsed_tensors['image/object/bbox/xmin']
xmax = parsed_tensors['image/object/bbox/xmax']
ymin = parsed_tensors['image/object/bbox/ymin']
ymax = parsed_tensors['image/object/bbox/ymax']
return tf.stack([ymin, xmin, ymax, xmax], axis=-1)
def _decode_masks(self, parsed_tensors):
"""Decode a set of PNG masks to the tf.float32 tensors."""
def _decode_png_mask(png_bytes):
mask = tf.squeeze(
tf.io.decode_png(png_bytes, channels=1, dtype=tf.uint8), axis=-1)
mask = tf.cast(mask, dtype=tf.float32)
mask.set_shape([None, None])
return mask
height = parsed_tensors['image/height']
width = parsed_tensors['image/width']
masks = parsed_tensors['image/object/mask']
return tf.cond(
pred=tf.greater(tf.size(input=masks), 0),
true_fn=lambda: tf.map_fn(_decode_png_mask, masks, dtype=tf.float32),
false_fn=lambda: tf.zeros([0, height, width], dtype=tf.float32))
def _decode_areas(self, parsed_tensors):
xmin = parsed_tensors['image/object/bbox/xmin']
xmax = parsed_tensors['image/object/bbox/xmax']
ymin = parsed_tensors['image/object/bbox/ymin']
ymax = parsed_tensors['image/object/bbox/ymax']
return tf.cond(
tf.greater(tf.shape(parsed_tensors['image/object/area'])[0], 0),
lambda: parsed_tensors['image/object/area'],
lambda: (xmax - xmin) * (ymax - ymin))
def decode(self, serialized_example):
"""Decode the serialized example.
Args:
serialized_example: a single serialized tf.Example string.
Returns:
decoded_tensors: a dictionary of tensors with the following fields:
- image: a uint8 tensor of shape [None, None, 3].
- source_id: a string scalar tensor.
- height: an integer scalar tensor.
- width: an integer scalar tensor.
- groundtruth_classes: a int64 tensor of shape [None].
- groundtruth_is_crowd: a bool tensor of shape [None].
- groundtruth_area: a float32 tensor of shape [None].
- groundtruth_boxes: a float32 tensor of shape [None, 4].
- groundtruth_instance_masks: a float32 tensor of shape
[None, None, None].
- groundtruth_instance_masks_png: a string tensor of shape [None].
"""
parsed_tensors = tf.io.parse_single_example(
serialized=serialized_example, features=self._keys_to_features)
for k in parsed_tensors:
if isinstance(parsed_tensors[k], tf.SparseTensor):
if parsed_tensors[k].dtype == tf.string:
parsed_tensors[k] = tf.sparse.to_dense(
parsed_tensors[k], default_value='')
else:
parsed_tensors[k] = tf.sparse.to_dense(
parsed_tensors[k], default_value=0)
image = self._decode_image(parsed_tensors)
boxes = self._decode_boxes(parsed_tensors)
areas = self._decode_areas(parsed_tensors)
is_crowds = tf.cond(
tf.greater(tf.shape(parsed_tensors['image/object/is_crowd'])[0], 0),
lambda: tf.cast(parsed_tensors['image/object/is_crowd'], dtype=tf.bool),
lambda: tf.zeros_like(parsed_tensors['image/object/class/label'], dtype=tf.bool)) # pylint: disable=line-too-long
if self._include_mask:
masks = self._decode_masks(parsed_tensors)
decoded_tensors = {
'image': image,
'source_id': parsed_tensors['image/source_id'],
'height': parsed_tensors['image/height'],
'width': parsed_tensors['image/width'],
'groundtruth_classes': parsed_tensors['image/object/class/label'],
'groundtruth_is_crowd': is_crowds,
'groundtruth_area': areas,
'groundtruth_boxes': boxes,
}
if self._include_mask:
decoded_tensors.update({
'groundtruth_instance_masks': masks,
'groundtruth_instance_masks_png': parsed_tensors['image/object/mask'],
})
return decoded_tensors
official/vision/detection/evaluation/__init__.py deleted 100644 → 0
View file @ 2b1924ca
# Copyright 2021 The TensorFlow Authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
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