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# DETR
## 论文
[End-to-End Object Detection with Transformers](https://arxiv.org/abs/2005.12872)
## 模型结构
对于输入图像，DETR使用传统的CNN backbone来学习2D特征, 并在将其传递到transformer encoder之前用positional encoding对其进行补充和平滑。然后，transformer decoder将少量固定数量的学习到的positional embeddings(对象查询)作为输入，额外关注encoder输出。将解码器的每个输出embedding传递到预测检测（类和边界框）或“无对象”类的共享前馈网络（FFN）。
<div align=center>
<img src="./doc/models.png"/>
</div>
## 算法原理
DETR将目标检测看作一种set prediction问题，并提出了一个十分简洁的目标检测pipeline，即CNN提取基础特征，送入Transformer做关系建模，得到的输出通过二分图匹配算法与图片上的ground truth做匹配。
<div align=center>
<img src="./doc/DETR.png"/>
</div>
## 环境配置
-v 路径、docker_name和imageID根据实际情况修改
### Docker（方法一）
```
docker pull image.sourcefind.cn:5000/dcu/admin/base/pytorch:1.13.1-centos7.6-dtk-23.04.1-py38-latest
docker run -it -v /path/your_code_data/:/path/ your_code_data/ --shm-size=32G --privileged=true --device=/dev/kfd --device=/dev/dri/ --group-add video --name docker_name imageID bash
cd /your_code_path/detr_pytorch
pip install -r requirements.txt
```
### Dockerfile（方法二）
```
cd ./docker
cp ../requirements.txt requirements.txt
docker build --no-cache -t detr:latest .
docker run -it -v /path/your_code_data/:/path/your_code_data/ --shm-size=32G --privileged=true --device=/dev/kfd --device=/dev/dri/ --group-add video --name docker_name imageID bash
cd /your_code_path/detr_pytorch
pip install -r requirements.txt
```
### Anaconda（方法三）
1、关于本项目DCU显卡所需的特殊深度学习库可从光合开发者社区下载安装: https://developer.hpccube.com/tool/
```
DTK软件栈：dtk23.04.1
python：python3.8
torch：1.13.1
torchvision：0.14.1
```
Tips：以上dtk软件栈、python、torch等DCU相关工具版本需要严格一一对应
2、其他非特殊库直接按照requirements.txt安装
```
pip install -r requirements.txt
```
## 数据集
COCO2017
[训练数据](http://images.cocodataset.org/zips/train2017.zip)
[验证数据](http://images.cocodataset.org/zips/val2017.zip)
[测试数据](http://images.cocodataset.org/zips/test2017.zip)
[标签数据](https://github.com/ultralytics/yolov5/releases/download/v1.0/coco2017labels.zip)
数据集的目录结构如下：
```
├── COCO2017
│ ├── images
│ ├── train2017
│ ├── val2017
│ └── test2017
│ ├── annotations
│ ├── instances_train2017.json
│ └── instances_val2017.json
```
训练/验证集数据准备：
训练/验证集都是采用的COCO的数据格式，如果使用自己的标注数据，请先将标注数据转换成COCO的格式，并按照上面的目录结构进行存放
## 训练
### 单机多卡
```
bash train.sh
```
## 推理
验证前需提前准备好预训练模型，并将coco_path设置为当前环境中推理数据的对应地址，数据应为COCO数据格式
如果想要查看预测效果（预测结果输出到图片上），请执行(其余参数与训练模型参数需一致，详情请根据训练参数配置):
```
python test.py --pre_trained_model <checkpoint path> --coco_path <coco path>
```
#### 单卡推理
```
bash val.sh
```
## result
<div align=center>
<img src="./doc/000000001503.jpg"/>
</div>
### 精度
在COCO2017的val数据集上进行单卡测试，结果如下表所示:
| name | backbone | schedule | inf_time | box AP |
| :------: | :------: | :------: | :------: |:------: |
| DETR(our) | R50 | 500 | xxx | xxx |
| [DETR](https://dl.fbaipublicfiles.com/detr/detr-r50-e632da11.pth) | R50 | 500 | 0.036 | 42.0 |
## 应用场景
### 算法类别
目标检测
### 热点应用行业
网安,交通,政府
## 源码仓库及问题反馈
http://developer.hpccube.com/codes/modelzoo/detr_pytorch.git
## 参考资料
https://github.com/facebookresearch/detr.git
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Detectron2 wrapper for DETR
=======
We provide a Detectron2 wrapper for DETR, thus providing a way to better integrate it in the existing detection ecosystem. It can be used for example to easily leverage datasets or backbones provided in Detectron2.
This wrapper currently supports only box detection, and is intended to be as close as possible to the original implementation, and we checked that it indeed match the results. Some notable facts and caveats:
- The data augmentation matches DETR's original data augmentation. This required patching the RandomCrop augmentation from Detectron2, so you'll need a version from the master branch from June 24th 2020 or more recent.
- To match DETR's original backbone initialization, we use the weights of a ResNet50 trained on imagenet using torchvision. This network uses a different pixel mean and std than most of the backbones available in Detectron2 by default, so extra care must be taken when switching to another one. Note that no other torchvision models are available in Detectron2 as of now, though it may change in the future.
- The gradient clipping mode is "full_model", which is not the default in Detectron2.
# Usage
To install Detectron2, please follow the [official installation instructions](https://github.com/facebookresearch/detectron2/blob/master/INSTALL.md).
## Evaluating a model
For convenience, we provide a conversion script to convert models trained by the main DETR training loop into the format of this wrapper. To download and convert the main Resnet50 model, simply do:
```
python converter.py --source_model https://dl.fbaipublicfiles.com/detr/detr-r50-e632da11.pth --output_model converted_model.pth
```
You can then evaluate it using:
```
python train_net.py --eval-only --config configs/detr_256_6_6_torchvision.yaml MODEL.WEIGHTS "converted_model.pth"
```
## Training
To train DETR on a single node with 8 gpus, simply use:
```
python train_net.py --config configs/detr_256_6_6_torchvision.yaml --num-gpus 8
```
To fine-tune DETR for instance segmentation on a single node with 8 gpus, simply use:
```
python train_net.py --config configs/detr_segm_256_6_6_torchvision.yaml --num-gpus 8 MODEL.DETR.FROZEN_WEIGHTS <model_path>
```
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MODEL:
META_ARCHITECTURE: "Detr"
WEIGHTS: "detectron2://ImageNetPretrained/torchvision/R-50.pkl"
PIXEL_MEAN: [123.675, 116.280, 103.530]
PIXEL_STD: [58.395, 57.120, 57.375]
MASK_ON: False
RESNETS:
DEPTH: 50
STRIDE_IN_1X1: False
OUT_FEATURES: ["res2", "res3", "res4", "res5"]
DETR:
GIOU_WEIGHT: 2.0
L1_WEIGHT: 5.0
NUM_OBJECT_QUERIES: 100
DATASETS:
TRAIN: ("coco_2017_train",)
TEST: ("coco_2017_val",)
SOLVER:
IMS_PER_BATCH: 64
BASE_LR: 0.0001
STEPS: (369600,)
MAX_ITER: 554400
WARMUP_FACTOR: 1.0
WARMUP_ITERS: 10
WEIGHT_DECAY: 0.0001
OPTIMIZER: "ADAMW"
BACKBONE_MULTIPLIER: 0.1
CLIP_GRADIENTS:
ENABLED: True
CLIP_TYPE: "full_model"
CLIP_VALUE: 0.01
NORM_TYPE: 2.0
INPUT:
MIN_SIZE_TRAIN: (480, 512, 544, 576, 608, 640, 672, 704, 736, 768, 800)
CROP:
ENABLED: True
TYPE: "absolute_range"
SIZE: (384, 600)
FORMAT: "RGB"
TEST:
EVAL_PERIOD: 4000
DATALOADER:
FILTER_EMPTY_ANNOTATIONS: False
NUM_WORKERS: 4
VERSION: 2
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MODEL:
META_ARCHITECTURE: "Detr"
# WEIGHTS: "detectron2://ImageNetPretrained/torchvision/R-50.pkl"
PIXEL_MEAN: [123.675, 116.280, 103.530]
PIXEL_STD: [58.395, 57.120, 57.375]
MASK_ON: True
RESNETS:
DEPTH: 50
STRIDE_IN_1X1: False
OUT_FEATURES: ["res2", "res3", "res4", "res5"]
DETR:
GIOU_WEIGHT: 2.0
L1_WEIGHT: 5.0
NUM_OBJECT_QUERIES: 100
FROZEN_WEIGHTS: ''
DATASETS:
TRAIN: ("coco_2017_train",)
TEST: ("coco_2017_val",)
SOLVER:
IMS_PER_BATCH: 64
BASE_LR: 0.0001
STEPS: (55440,)
MAX_ITER: 92400
WARMUP_FACTOR: 1.0
WARMUP_ITERS: 10
WEIGHT_DECAY: 0.0001
OPTIMIZER: "ADAMW"
BACKBONE_MULTIPLIER: 0.1
CLIP_GRADIENTS:
ENABLED: True
CLIP_TYPE: "full_model"
CLIP_VALUE: 0.01
NORM_TYPE: 2.0
INPUT:
MIN_SIZE_TRAIN: (480, 512, 544, 576, 608, 640, 672, 704, 736, 768, 800)
CROP:
ENABLED: True
TYPE: "absolute_range"
SIZE: (384, 600)
FORMAT: "RGB"
TEST:
EVAL_PERIOD: 4000
DATALOADER:
FILTER_EMPTY_ANNOTATIONS: False
NUM_WORKERS: 4
VERSION: 2
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# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
"""
Helper script to convert models trained with the main version of DETR to be used with the Detectron2 version.
"""
import json
import argparse
import numpy as np
import torch
def parse_args():
parser = argparse.ArgumentParser("D2 model converter")
parser.add_argument("--source_model", default="", type=str, help="Path or url to the DETR model to convert")
parser.add_argument("--output_model", default="", type=str, help="Path where to save the converted model")
return parser.parse_args()
def main():
args = parse_args()
# D2 expects contiguous classes, so we need to remap the 92 classes from DETR
# fmt: off
coco_idx = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25,
27, 28, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 46, 47, 48, 49, 50, 51,
52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 67, 70, 72, 73, 74, 75, 76, 77,
78, 79, 80, 81, 82, 84, 85, 86, 87, 88, 89, 90, 91]
# fmt: on
coco_idx = np.array(coco_idx)
if args.source_model.startswith("https"):
checkpoint = torch.hub.load_state_dict_from_url(args.source_model, map_location="cpu", check_hash=True)
else:
checkpoint = torch.load(args.source_model, map_location="cpu")
model_to_convert = checkpoint["model"]
model_converted = {}
for k in model_to_convert.keys():
old_k = k
if "backbone" in k:
k = k.replace("backbone.0.body.", "")
if "layer" not in k:
k = "stem." + k
for t in [1, 2, 3, 4]:
k = k.replace(f"layer{t}", f"res{t + 1}")
for t in [1, 2, 3]:
k = k.replace(f"bn{t}", f"conv{t}.norm")
k = k.replace("downsample.0", "shortcut")
k = k.replace("downsample.1", "shortcut.norm")
k = "backbone.0.backbone." + k
k = "detr." + k
print(old_k, "->", k)
if "class_embed" in old_k:
v = model_to_convert[old_k].detach()
if v.shape[0] == 92:
shape_old = v.shape
model_converted[k] = v[coco_idx]
print("Head conversion: changing shape from {} to {}".format(shape_old, model_converted[k].shape))
continue
model_converted[k] = model_to_convert[old_k].detach()
model_to_save = {"model": model_converted}
torch.save(model_to_save, args.output_model)
if __name__ == "__main__":
main()
d2/detr/__init__.py 0 → 100644
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# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
from .config import add_detr_config
from .detr import Detr
from .dataset_mapper import DetrDatasetMapper
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# -*- coding: utf-8 -*-
# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
from detectron2.config import CfgNode as CN
def add_detr_config(cfg):
"""
Add config for DETR.
"""
cfg.MODEL.DETR = CN()
cfg.MODEL.DETR.NUM_CLASSES = 80
# For Segmentation
cfg.MODEL.DETR.FROZEN_WEIGHTS = ''
# LOSS
cfg.MODEL.DETR.GIOU_WEIGHT = 2.0
cfg.MODEL.DETR.L1_WEIGHT = 5.0
cfg.MODEL.DETR.DEEP_SUPERVISION = True
cfg.MODEL.DETR.NO_OBJECT_WEIGHT = 0.1
# TRANSFORMER
cfg.MODEL.DETR.NHEADS = 8
cfg.MODEL.DETR.DROPOUT = 0.1
cfg.MODEL.DETR.DIM_FEEDFORWARD = 2048
cfg.MODEL.DETR.ENC_LAYERS = 6
cfg.MODEL.DETR.DEC_LAYERS = 6
cfg.MODEL.DETR.PRE_NORM = False
cfg.MODEL.DETR.HIDDEN_DIM = 256
cfg.MODEL.DETR.NUM_OBJECT_QUERIES = 100
cfg.SOLVER.OPTIMIZER = "ADAMW"
cfg.SOLVER.BACKBONE_MULTIPLIER = 0.1
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# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
import copy
import logging
import numpy as np
import torch
from detectron2.data import detection_utils as utils
from detectron2.data import transforms as T
from detectron2.data.transforms import TransformGen
__all__ = ["DetrDatasetMapper"]
def build_transform_gen(cfg, is_train):
"""
Create a list of :class:`TransformGen` from config.
Returns:
list[TransformGen]
"""
if is_train:
min_size = cfg.INPUT.MIN_SIZE_TRAIN
max_size = cfg.INPUT.MAX_SIZE_TRAIN
sample_style = cfg.INPUT.MIN_SIZE_TRAIN_SAMPLING
else:
min_size = cfg.INPUT.MIN_SIZE_TEST
max_size = cfg.INPUT.MAX_SIZE_TEST
sample_style = "choice"
if sample_style == "range":
assert len(min_size) == 2, "more than 2 ({}) min_size(s) are provided for ranges".format(len(min_size))
logger = logging.getLogger(__name__)
tfm_gens = []
if is_train:
tfm_gens.append(T.RandomFlip())
tfm_gens.append(T.ResizeShortestEdge(min_size, max_size, sample_style))
if is_train:
logger.info("TransformGens used in training: " + str(tfm_gens))
return tfm_gens
class DetrDatasetMapper:
"""
A callable which takes a dataset dict in Detectron2 Dataset format,
and map it into a format used by DETR.
The callable currently does the following:
1. Read the image from "file_name"
2. Applies geometric transforms to the image and annotation
3. Find and applies suitable cropping to the image and annotation
4. Prepare image and annotation to Tensors
"""
def __init__(self, cfg, is_train=True):
if cfg.INPUT.CROP.ENABLED and is_train:
self.crop_gen = [
T.ResizeShortestEdge([400, 500, 600], sample_style="choice"),
T.RandomCrop(cfg.INPUT.CROP.TYPE, cfg.INPUT.CROP.SIZE),
]
else:
self.crop_gen = None
self.mask_on = cfg.MODEL.MASK_ON
self.tfm_gens = build_transform_gen(cfg, is_train)
logging.getLogger(__name__).info(
"Full TransformGens used in training: {}, crop: {}".format(str(self.tfm_gens), str(self.crop_gen))
)
self.img_format = cfg.INPUT.FORMAT
self.is_train = is_train
def __call__(self, dataset_dict):
"""
Args:
dataset_dict (dict): Metadata of one image, in Detectron2 Dataset format.
Returns:
dict: a format that builtin models in detectron2 accept
"""
dataset_dict = copy.deepcopy(dataset_dict) # it will be modified by code below
image = utils.read_image(dataset_dict["file_name"], format=self.img_format)
utils.check_image_size(dataset_dict, image)
if self.crop_gen is None:
image, transforms = T.apply_transform_gens(self.tfm_gens, image)
else:
if np.random.rand() > 0.5:
image, transforms = T.apply_transform_gens(self.tfm_gens, image)
else:
image, transforms = T.apply_transform_gens(
self.tfm_gens[:-1] + self.crop_gen + self.tfm_gens[-1:], image
)
image_shape = image.shape[:2] # h, w
# Pytorch's dataloader is efficient on torch.Tensor due to shared-memory,
# but not efficient on large generic data structures due to the use of pickle & mp.Queue.
# Therefore it's important to use torch.Tensor.
dataset_dict["image"] = torch.as_tensor(np.ascontiguousarray(image.transpose(2, 0, 1)))
if not self.is_train:
# USER: Modify this if you want to keep them for some reason.
dataset_dict.pop("annotations", None)
return dataset_dict
if "annotations" in dataset_dict:
# USER: Modify this if you want to keep them for some reason.
for anno in dataset_dict["annotations"]:
if not self.mask_on:
anno.pop("segmentation", None)
anno.pop("keypoints", None)
# USER: Implement additional transformations if you have other types of data
annos = [
utils.transform_instance_annotations(obj, transforms, image_shape)
for obj in dataset_dict.pop("annotations")
if obj.get("iscrowd", 0) == 0
]
instances = utils.annotations_to_instances(annos, image_shape)
dataset_dict["instances"] = utils.filter_empty_instances(instances)
return dataset_dict
d2/detr/detr.py 0 → 100644
View file @ 0e92bd4d
# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
import logging
import math
from typing import List
import numpy as np
import torch
import torch.distributed as dist
import torch.nn.functional as F
from scipy.optimize import linear_sum_assignment
from torch import nn
from detectron2.layers import ShapeSpec
from detectron2.modeling import META_ARCH_REGISTRY, build_backbone, detector_postprocess
from detectron2.structures import Boxes, ImageList, Instances, BitMasks, PolygonMasks
from detectron2.utils.logger import log_first_n
from fvcore.nn import giou_loss, smooth_l1_loss
from models.backbone import Joiner
from models.detr import DETR, SetCriterion
from models.matcher import HungarianMatcher
from models.position_encoding import PositionEmbeddingSine
from models.transformer import Transformer
from models.segmentation import DETRsegm, PostProcessPanoptic, PostProcessSegm
from util.box_ops import box_cxcywh_to_xyxy, box_xyxy_to_cxcywh
from util.misc import NestedTensor
from datasets.coco import convert_coco_poly_to_mask
__all__ = ["Detr"]
class MaskedBackbone(nn.Module):
""" This is a thin wrapper around D2's backbone to provide padding masking"""
def __init__(self, cfg):
super().__init__()
self.backbone = build_backbone(cfg)
backbone_shape = self.backbone.output_shape()
self.feature_strides = [backbone_shape[f].stride for f in backbone_shape.keys()]
self.num_channels = backbone_shape[list(backbone_shape.keys())[-1]].channels
def forward(self, images):
features = self.backbone(images.tensor)
masks = self.mask_out_padding(
[features_per_level.shape for features_per_level in features.values()],
images.image_sizes,
images.tensor.device,
)
assert len(features) == len(masks)
for i, k in enumerate(features.keys()):
features[k] = NestedTensor(features[k], masks[i])
return features
def mask_out_padding(self, feature_shapes, image_sizes, device):
masks = []
assert len(feature_shapes) == len(self.feature_strides)
for idx, shape in enumerate(feature_shapes):
N, _, H, W = shape
masks_per_feature_level = torch.ones((N, H, W), dtype=torch.bool, device=device)
for img_idx, (h, w) in enumerate(image_sizes):
masks_per_feature_level[
img_idx,
: int(np.ceil(float(h) / self.feature_strides[idx])),
: int(np.ceil(float(w) / self.feature_strides[idx])),
] = 0
masks.append(masks_per_feature_level)
return masks
@META_ARCH_REGISTRY.register()
class Detr(nn.Module):
"""
Implement Detr
"""
def __init__(self, cfg):
super().__init__()
self.device = torch.device(cfg.MODEL.DEVICE)
self.num_classes = cfg.MODEL.DETR.NUM_CLASSES
self.mask_on = cfg.MODEL.MASK_ON
hidden_dim = cfg.MODEL.DETR.HIDDEN_DIM
num_queries = cfg.MODEL.DETR.NUM_OBJECT_QUERIES
# Transformer parameters:
nheads = cfg.MODEL.DETR.NHEADS
dropout = cfg.MODEL.DETR.DROPOUT
dim_feedforward = cfg.MODEL.DETR.DIM_FEEDFORWARD
enc_layers = cfg.MODEL.DETR.ENC_LAYERS
dec_layers = cfg.MODEL.DETR.DEC_LAYERS
pre_norm = cfg.MODEL.DETR.PRE_NORM
# Loss parameters:
giou_weight = cfg.MODEL.DETR.GIOU_WEIGHT
l1_weight = cfg.MODEL.DETR.L1_WEIGHT
deep_supervision = cfg.MODEL.DETR.DEEP_SUPERVISION
no_object_weight = cfg.MODEL.DETR.NO_OBJECT_WEIGHT
N_steps = hidden_dim // 2
d2_backbone = MaskedBackbone(cfg)
backbone = Joiner(d2_backbone, PositionEmbeddingSine(N_steps, normalize=True))
backbone.num_channels = d2_backbone.num_channels
transformer = Transformer(
d_model=hidden_dim,
dropout=dropout,
nhead=nheads,
dim_feedforward=dim_feedforward,
num_encoder_layers=enc_layers,
num_decoder_layers=dec_layers,
normalize_before=pre_norm,
return_intermediate_dec=deep_supervision,
)
self.detr = DETR(
backbone, transformer, num_classes=self.num_classes, num_queries=num_queries, aux_loss=deep_supervision
)
if self.mask_on:
frozen_weights = cfg.MODEL.DETR.FROZEN_WEIGHTS
if frozen_weights != '':
print("LOAD pre-trained weights")
weight = torch.load(frozen_weights, map_location=lambda storage, loc: storage)['model']
new_weight = {}
for k, v in weight.items():
if 'detr.' in k:
new_weight[k.replace('detr.', '')] = v
else:
print(f"Skipping loading weight {k} from frozen model")
del weight
self.detr.load_state_dict(new_weight)
del new_weight
self.detr = DETRsegm(self.detr, freeze_detr=(frozen_weights != ''))
self.seg_postprocess = PostProcessSegm
self.detr.to(self.device)
# building criterion
matcher = HungarianMatcher(cost_class=1, cost_bbox=l1_weight, cost_giou=giou_weight)
weight_dict = {"loss_ce": 1, "loss_bbox": l1_weight}
weight_dict["loss_giou"] = giou_weight
if deep_supervision:
aux_weight_dict = {}
for i in range(dec_layers - 1):
aux_weight_dict.update({k + f"_{i}": v for k, v in weight_dict.items()})
weight_dict.update(aux_weight_dict)
losses = ["labels", "boxes", "cardinality"]
if self.mask_on:
losses += ["masks"]
self.criterion = SetCriterion(
self.num_classes, matcher=matcher, weight_dict=weight_dict, eos_coef=no_object_weight, losses=losses,
)
self.criterion.to(self.device)
pixel_mean = torch.Tensor(cfg.MODEL.PIXEL_MEAN).to(self.device).view(3, 1, 1)
pixel_std = torch.Tensor(cfg.MODEL.PIXEL_STD).to(self.device).view(3, 1, 1)
self.normalizer = lambda x: (x - pixel_mean) / pixel_std
self.to(self.device)
def forward(self, batched_inputs):
"""
Args:
batched_inputs: a list, batched outputs of :class:`DatasetMapper` .
Each item in the list contains the inputs for one image.
For now, each item in the list is a dict that contains:
* image: Tensor, image in (C, H, W) format.
* instances: Instances
Other information that's included in the original dicts, such as:
* "height", "width" (int): the output resolution of the model, used in inference.
See :meth:`postprocess` for details.
Returns:
dict[str: Tensor]:
mapping from a named loss to a tensor storing the loss. Used during training only.
"""
images = self.preprocess_image(batched_inputs)
output = self.detr(images)
if self.training:
gt_instances = [x["instances"].to(self.device) for x in batched_inputs]
targets = self.prepare_targets(gt_instances)
loss_dict = self.criterion(output, targets)
weight_dict = self.criterion.weight_dict
for k in loss_dict.keys():
if k in weight_dict:
loss_dict[k] *= weight_dict[k]
return loss_dict
else:
box_cls = output["pred_logits"]
box_pred = output["pred_boxes"]
mask_pred = output["pred_masks"] if self.mask_on else None
results = self.inference(box_cls, box_pred, mask_pred, images.image_sizes)
processed_results = []
for results_per_image, input_per_image, image_size in zip(results, batched_inputs, images.image_sizes):
height = input_per_image.get("height", image_size[0])
width = input_per_image.get("width", image_size[1])
r = detector_postprocess(results_per_image, height, width)
processed_results.append({"instances": r})
return processed_results
def prepare_targets(self, targets):
new_targets = []
for targets_per_image in targets:
h, w = targets_per_image.image_size
image_size_xyxy = torch.as_tensor([w, h, w, h], dtype=torch.float, device=self.device)
gt_classes = targets_per_image.gt_classes
gt_boxes = targets_per_image.gt_boxes.tensor / image_size_xyxy
gt_boxes = box_xyxy_to_cxcywh(gt_boxes)
new_targets.append({"labels": gt_classes, "boxes": gt_boxes})
if self.mask_on and hasattr(targets_per_image, 'gt_masks'):
gt_masks = targets_per_image.gt_masks
gt_masks = convert_coco_poly_to_mask(gt_masks.polygons, h, w)
new_targets[-1].update({'masks': gt_masks})
return new_targets
def inference(self, box_cls, box_pred, mask_pred, image_sizes):
"""
Arguments:
box_cls (Tensor): tensor of shape (batch_size, num_queries, K).
The tensor predicts the classification probability for each query.
box_pred (Tensor): tensors of shape (batch_size, num_queries, 4).
The tensor predicts 4-vector (x,y,w,h) box
regression values for every queryx
image_sizes (List[torch.Size]): the input image sizes
Returns:
results (List[Instances]): a list of #images elements.
"""
assert len(box_cls) == len(image_sizes)
results = []
# For each box we assign the best class or the second best if the best on is `no_object`.
scores, labels = F.softmax(box_cls, dim=-1)[:, :, :-1].max(-1)
for i, (scores_per_image, labels_per_image, box_pred_per_image, image_size) in enumerate(zip(
scores, labels, box_pred, image_sizes
)):
result = Instances(image_size)
result.pred_boxes = Boxes(box_cxcywh_to_xyxy(box_pred_per_image))
result.pred_boxes.scale(scale_x=image_size[1], scale_y=image_size[0])
if self.mask_on:
mask = F.interpolate(mask_pred[i].unsqueeze(0), size=image_size, mode='bilinear', align_corners=False)
mask = mask[0].sigmoid() > 0.5
B, N, H, W = mask_pred.shape
mask = BitMasks(mask.cpu()).crop_and_resize(result.pred_boxes.tensor.cpu(), 32)
result.pred_masks = mask.unsqueeze(1).to(mask_pred[0].device)
result.scores = scores_per_image
result.pred_classes = labels_per_image
results.append(result)
return results
def preprocess_image(self, batched_inputs):
"""
Normalize, pad and batch the input images.
"""
images = [self.normalizer(x["image"].to(self.device)) for x in batched_inputs]
images = ImageList.from_tensors(images)
return images
d2/train_net.py 0 → 100644
View file @ 0e92bd4d
# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
"""
DETR Training Script.
This script is a simplified version of the training script in detectron2/tools.
"""
import os
import sys
import itertools
# fmt: off
sys.path.insert(1, os.path.join(sys.path[0], '..'))
# fmt: on
import time
from typing import Any, Dict, List, Set
import torch
import detectron2.utils.comm as comm
from d2.detr import DetrDatasetMapper, add_detr_config
from detectron2.checkpoint import DetectionCheckpointer
from detectron2.config import get_cfg
from detectron2.data import MetadataCatalog, build_detection_train_loader
from detectron2.engine import DefaultTrainer, default_argument_parser, default_setup, launch
from detectron2.evaluation import COCOEvaluator, verify_results
from detectron2.solver.build import maybe_add_gradient_clipping
class Trainer(DefaultTrainer):
"""
Extension of the Trainer class adapted to DETR.
"""
@classmethod
def build_evaluator(cls, cfg, dataset_name, output_folder=None):
"""
Create evaluator(s) for a given dataset.
This uses the special metadata "evaluator_type" associated with each builtin dataset.
For your own dataset, you can simply create an evaluator manually in your
script and do not have to worry about the hacky if-else logic here.
"""
if output_folder is None:
output_folder = os.path.join(cfg.OUTPUT_DIR, "inference")
return COCOEvaluator(dataset_name, cfg, True, output_folder)
@classmethod
def build_train_loader(cls, cfg):
if "Detr" == cfg.MODEL.META_ARCHITECTURE:
mapper = DetrDatasetMapper(cfg, True)
else:
mapper = None
return build_detection_train_loader(cfg, mapper=mapper)
@classmethod
def build_optimizer(cls, cfg, model):
params: List[Dict[str, Any]] = []
memo: Set[torch.nn.parameter.Parameter] = set()
for key, value in model.named_parameters(recurse=True):
if not value.requires_grad:
continue
# Avoid duplicating parameters
if value in memo:
continue
memo.add(value)
lr = cfg.SOLVER.BASE_LR
weight_decay = cfg.SOLVER.WEIGHT_DECAY
if "backbone" in key:
lr = lr * cfg.SOLVER.BACKBONE_MULTIPLIER
params += [{"params": [value], "lr": lr, "weight_decay": weight_decay}]
def maybe_add_full_model_gradient_clipping(optim): # optim: the optimizer class
# detectron2 doesn't have full model gradient clipping now
clip_norm_val = cfg.SOLVER.CLIP_GRADIENTS.CLIP_VALUE
enable = (
cfg.SOLVER.CLIP_GRADIENTS.ENABLED
and cfg.SOLVER.CLIP_GRADIENTS.CLIP_TYPE == "full_model"
and clip_norm_val > 0.0
)
class FullModelGradientClippingOptimizer(optim):
def step(self, closure=None):
all_params = itertools.chain(*[x["params"] for x in self.param_groups])
torch.nn.utils.clip_grad_norm_(all_params, clip_norm_val)
super().step(closure=closure)
return FullModelGradientClippingOptimizer if enable else optim
optimizer_type = cfg.SOLVER.OPTIMIZER
if optimizer_type == "SGD":
optimizer = maybe_add_full_model_gradient_clipping(torch.optim.SGD)(
params, cfg.SOLVER.BASE_LR, momentum=cfg.SOLVER.MOMENTUM
)
elif optimizer_type == "ADAMW":
optimizer = maybe_add_full_model_gradient_clipping(torch.optim.AdamW)(
params, cfg.SOLVER.BASE_LR
)
else:
raise NotImplementedError(f"no optimizer type {optimizer_type}")
if not cfg.SOLVER.CLIP_GRADIENTS.CLIP_TYPE == "full_model":
optimizer = maybe_add_gradient_clipping(cfg, optimizer)
return optimizer
def setup(args):
"""
Create configs and perform basic setups.
"""
cfg = get_cfg()
add_detr_config(cfg)
cfg.merge_from_file(args.config_file)
cfg.merge_from_list(args.opts)
cfg.freeze()
default_setup(cfg, args)
return cfg
def main(args):
cfg = setup(args)
if args.eval_only:
model = Trainer.build_model(cfg)
DetectionCheckpointer(model, save_dir=cfg.OUTPUT_DIR).resume_or_load(cfg.MODEL.WEIGHTS, resume=args.resume)
res = Trainer.test(cfg, model)
if comm.is_main_process():
verify_results(cfg, res)
return res
trainer = Trainer(cfg)
trainer.resume_or_load(resume=args.resume)
return trainer.train()
if __name__ == "__main__":
args = default_argument_parser().parse_args()
print("Command Line Args:", args)
launch(
main,
args.num_gpus,
num_machines=args.num_machines,
machine_rank=args.machine_rank,
dist_url=args.dist_url,
args=(args,),
)
datasets/__init__.py 0 → 100644
View file @ 0e92bd4d
# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
import torch.utils.data
import torchvision
from .coco import build as build_coco
def get_coco_api_from_dataset(dataset):
for _ in range(10):
# if isinstance(dataset, torchvision.datasets.CocoDetection):
# break
if isinstance(dataset, torch.utils.data.Subset):
dataset = dataset.dataset
if isinstance(dataset, torchvision.datasets.CocoDetection):
return dataset.coco
def build_dataset(image_set, args):
if args.dataset_file == 'coco':
return build_coco(image_set, args)
if args.dataset_file == 'coco_panoptic':
# to avoid making panopticapi required for coco
from .coco_panoptic import build as build_coco_panoptic
return build_coco_panoptic(image_set, args)
raise ValueError(f'dataset {args.dataset_file} not supported')
datasets/coco.py 0 → 100644
View file @ 0e92bd4d
# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
"""
COCO dataset which returns image_id for evaluation.
Mostly copy-paste from https://github.com/pytorch/vision/blob/13b35ff/references/detection/coco_utils.py
"""
from pathlib import Path
import torch
import torch.utils.data
import torchvision
from pycocotools import mask as coco_mask
import datasets.transforms as T
class CocoDetection(torchvision.datasets.CocoDetection):
def __init__(self, img_folder, ann_file, transforms, return_masks):
super(CocoDetection, self).__init__(img_folder, ann_file)
self._transforms = transforms
self.prepare = ConvertCocoPolysToMask(return_masks)
def __getitem__(self, idx):
img, target = super(CocoDetection, self).__getitem__(idx)
image_id = self.ids[idx]
target = {'image_id': image_id, 'annotations': target}
img, target = self.prepare(img, target)
if self._transforms is not None:
img, target = self._transforms(img, target)
return img, target
def convert_coco_poly_to_mask(segmentations, height, width):
masks = []
for polygons in segmentations:
rles = coco_mask.frPyObjects(polygons, height, width)
mask = coco_mask.decode(rles)
if len(mask.shape) < 3:
mask = mask[..., None]
mask = torch.as_tensor(mask, dtype=torch.uint8)
mask = mask.any(dim=2)
masks.append(mask)
if masks:
masks = torch.stack(masks, dim=0)
else:
masks = torch.zeros((0, height, width), dtype=torch.uint8)
return masks
class ConvertCocoPolysToMask(object):
def __init__(self, return_masks=False):
self.return_masks = return_masks
def __call__(self, image, target):
w, h = image.size
image_id = target["image_id"]
image_id = torch.tensor([image_id])
anno = target["annotations"]
anno = [obj for obj in anno if 'iscrowd' not in obj or obj['iscrowd'] == 0]
boxes = [obj["bbox"] for obj in anno]
# guard against no boxes via resizing
boxes = torch.as_tensor(boxes, dtype=torch.float32).reshape(-1, 4)
boxes[:, 2:] += boxes[:, :2]
boxes[:, 0::2].clamp_(min=0, max=w)
boxes[:, 1::2].clamp_(min=0, max=h)
classes = [obj["category_id"] for obj in anno]
classes = torch.tensor(classes, dtype=torch.int64)
if self.return_masks:
segmentations = [obj["segmentation"] for obj in anno]
masks = convert_coco_poly_to_mask(segmentations, h, w)
keypoints = None
if anno and "keypoints" in anno[0]:
keypoints = [obj["keypoints"] for obj in anno]
keypoints = torch.as_tensor(keypoints, dtype=torch.float32)
num_keypoints = keypoints.shape[0]
if num_keypoints:
keypoints = keypoints.view(num_keypoints, -1, 3)
keep = (boxes[:, 3] > boxes[:, 1]) & (boxes[:, 2] > boxes[:, 0])
boxes = boxes[keep]
classes = classes[keep]
if self.return_masks:
masks = masks[keep]
if keypoints is not None:
keypoints = keypoints[keep]
target = {}
target["boxes"] = boxes
target["labels"] = classes
if self.return_masks:
target["masks"] = masks
target["image_id"] = image_id
if keypoints is not None:
target["keypoints"] = keypoints
# for conversion to coco api
area = torch.tensor([obj["area"] for obj in anno])
iscrowd = torch.tensor([obj["iscrowd"] if "iscrowd" in obj else 0 for obj in anno])
target["area"] = area[keep]
target["iscrowd"] = iscrowd[keep]
target["orig_size"] = torch.as_tensor([int(h), int(w)])
target["size"] = torch.as_tensor([int(h), int(w)])
return image, target
def make_coco_transforms(image_set):
normalize = T.Compose([
T.ToTensor(),
T.Normalize([0.485, 0.456, 0.406], [0.229, 0.224, 0.225])
])
scales = [480, 512, 544, 576, 608, 640, 672, 704, 736, 768, 800]
if image_set == 'train':
return T.Compose([
T.RandomHorizontalFlip(),
T.RandomSelect(
T.RandomResize(scales, max_size=1333),
T.Compose([
T.RandomResize([400, 500, 600]),
T.RandomSizeCrop(384, 600),
T.RandomResize(scales, max_size=1333),
])
),
normalize,
])
if image_set == 'val':
return T.Compose([
T.RandomResize([800], max_size=1333),
normalize,
])
raise ValueError(f'unknown {image_set}')
def build(image_set, args):
root = Path(args.coco_path)
assert root.exists(), f'provided COCO path {root} does not exist'
mode = 'instances'
PATHS = {
"train": (root / "images/train2017", root / "annotations" / f'{mode}_train2017.json'),
"val": (root / "images/val2017", root / "annotations" / f'{mode}_val2017.json'),
}
img_folder, ann_file = PATHS[image_set]
dataset = CocoDetection(img_folder, ann_file, transforms=make_coco_transforms(image_set), return_masks=args.masks)
return dataset
datasets/coco_eval.py 0 → 100644
View file @ 0e92bd4d
# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
"""
COCO evaluator that works in distributed mode.
Mostly copy-paste from https://github.com/pytorch/vision/blob/edfd5a7/references/detection/coco_eval.py
The difference is that there is less copy-pasting from pycocotools
in the end of the file, as python3 can suppress prints with contextlib
"""
import os
import contextlib
import copy
import numpy as np
import torch
from pycocotools.cocoeval import COCOeval
from pycocotools.coco import COCO
import pycocotools.mask as mask_util
from util.misc import all_gather
class CocoEvaluator(object):
def __init__(self, coco_gt, iou_types):
assert isinstance(iou_types, (list, tuple))
coco_gt = copy.deepcopy(coco_gt)
self.coco_gt = coco_gt
self.iou_types = iou_types
self.coco_eval = {}
for iou_type in iou_types:
self.coco_eval[iou_type] = COCOeval(coco_gt, iouType=iou_type)
self.img_ids = []
self.eval_imgs = {k: [] for k in iou_types}
def update(self, predictions):
img_ids = list(np.unique(list(predictions.keys())))
self.img_ids.extend(img_ids)
for iou_type in self.iou_types:
results = self.prepare(predictions, iou_type)
# suppress pycocotools prints
with open(os.devnull, 'w') as devnull:
with contextlib.redirect_stdout(devnull):
coco_dt = COCO.loadRes(self.coco_gt, results) if results else COCO()
coco_eval = self.coco_eval[iou_type]
coco_eval.cocoDt = coco_dt
coco_eval.params.imgIds = list(img_ids)
img_ids, eval_imgs = evaluate(coco_eval)
self.eval_imgs[iou_type].append(eval_imgs)
def synchronize_between_processes(self):
for iou_type in self.iou_types:
self.eval_imgs[iou_type] = np.concatenate(self.eval_imgs[iou_type], 2)
create_common_coco_eval(self.coco_eval[iou_type], self.img_ids, self.eval_imgs[iou_type])
def accumulate(self):
for coco_eval in self.coco_eval.values():
coco_eval.accumulate()
def summarize(self):
for iou_type, coco_eval in self.coco_eval.items():
print("IoU metric: {}".format(iou_type))
coco_eval.summarize()
def prepare(self, predictions, iou_type):
if iou_type == "bbox":
return self.prepare_for_coco_detection(predictions)
elif iou_type == "segm":
return self.prepare_for_coco_segmentation(predictions)
elif iou_type == "keypoints":
return self.prepare_for_coco_keypoint(predictions)
else:
raise ValueError("Unknown iou type {}".format(iou_type))
def prepare_for_coco_detection(self, predictions):
coco_results = []
for original_id, prediction in predictions.items():
if len(prediction) == 0:
continue
boxes = prediction["boxes"]
boxes = convert_to_xywh(boxes).tolist()
scores = prediction["scores"].tolist()
labels = prediction["labels"].tolist()
coco_results.extend(
[
{
"image_id": original_id,
"category_id": labels[k],
"bbox": box,
"score": scores[k],
}
for k, box in enumerate(boxes)
]
)
return coco_results
def prepare_for_coco_segmentation(self, predictions):
coco_results = []
for original_id, prediction in predictions.items():
if len(prediction) == 0:
continue
scores = prediction["scores"]
labels = prediction["labels"]
masks = prediction["masks"]
masks = masks > 0.5
scores = prediction["scores"].tolist()
labels = prediction["labels"].tolist()
rles = [
mask_util.encode(np.array(mask[0, :, :, np.newaxis], dtype=np.uint8, order="F"))[0]
for mask in masks
]
for rle in rles:
rle["counts"] = rle["counts"].decode("utf-8")
coco_results.extend(
[
{
"image_id": original_id,
"category_id": labels[k],
"segmentation": rle,
"score": scores[k],
}
for k, rle in enumerate(rles)
]
)
return coco_results
def prepare_for_coco_keypoint(self, predictions):
coco_results = []
for original_id, prediction in predictions.items():
if len(prediction) == 0:
continue
boxes = prediction["boxes"]
boxes = convert_to_xywh(boxes).tolist()
scores = prediction["scores"].tolist()
labels = prediction["labels"].tolist()
keypoints = prediction["keypoints"]
keypoints = keypoints.flatten(start_dim=1).tolist()
coco_results.extend(
[
{
"image_id": original_id,
"category_id": labels[k],
'keypoints': keypoint,
"score": scores[k],
}
for k, keypoint in enumerate(keypoints)
]
)
return coco_results
def convert_to_xywh(boxes):
xmin, ymin, xmax, ymax = boxes.unbind(1)
return torch.stack((xmin, ymin, xmax - xmin, ymax - ymin), dim=1)
def merge(img_ids, eval_imgs):
all_img_ids = all_gather(img_ids)
all_eval_imgs = all_gather(eval_imgs)
merged_img_ids = []
for p in all_img_ids:
merged_img_ids.extend(p)
merged_eval_imgs = []
for p in all_eval_imgs:
merged_eval_imgs.append(p)
merged_img_ids = np.array(merged_img_ids)
merged_eval_imgs = np.concatenate(merged_eval_imgs, 2)
# keep only unique (and in sorted order) images
merged_img_ids, idx = np.unique(merged_img_ids, return_index=True)
merged_eval_imgs = merged_eval_imgs[..., idx]
return merged_img_ids, merged_eval_imgs
def create_common_coco_eval(coco_eval, img_ids, eval_imgs):
img_ids, eval_imgs = merge(img_ids, eval_imgs)
img_ids = list(img_ids)
eval_imgs = list(eval_imgs.flatten())
coco_eval.evalImgs = eval_imgs
coco_eval.params.imgIds = img_ids
coco_eval._paramsEval = copy.deepcopy(coco_eval.params)
#################################################################
# From pycocotools, just removed the prints and fixed
# a Python3 bug about unicode not defined
#################################################################
def evaluate(self):
'''
Run per image evaluation on given images and store results (a list of dict) in self.evalImgs
:return: None
'''
# tic = time.time()
# print('Running per image evaluation...')
p = self.params
# add backward compatibility if useSegm is specified in params
if p.useSegm is not None:
p.iouType = 'segm' if p.useSegm == 1 else 'bbox'
print('useSegm (deprecated) is not None. Running {} evaluation'.format(p.iouType))
# print('Evaluate annotation type *{}*'.format(p.iouType))
p.imgIds = list(np.unique(p.imgIds))
if p.useCats:
p.catIds = list(np.unique(p.catIds))
p.maxDets = sorted(p.maxDets)
self.params = p
self._prepare()
# loop through images, area range, max detection number
catIds = p.catIds if p.useCats else [-1]
if p.iouType == 'segm' or p.iouType == 'bbox':
computeIoU = self.computeIoU
elif p.iouType == 'keypoints':
computeIoU = self.computeOks
self.ious = {
(imgId, catId): computeIoU(imgId, catId)
for imgId in p.imgIds
for catId in catIds}
evaluateImg = self.evaluateImg
maxDet = p.maxDets[-1]
evalImgs = [
evaluateImg(imgId, catId, areaRng, maxDet)
for catId in catIds
for areaRng in p.areaRng
for imgId in p.imgIds
]
# this is NOT in the pycocotools code, but could be done outside
evalImgs = np.asarray(evalImgs).reshape(len(catIds), len(p.areaRng), len(p.imgIds))
self._paramsEval = copy.deepcopy(self.params)
# toc = time.time()
# print('DONE (t={:0.2f}s).'.format(toc-tic))
return p.imgIds, evalImgs
#################################################################
# end of straight copy from pycocotools, just removing the prints
#################################################################
datasets/coco_panoptic.py 0 → 100644
View file @ 0e92bd4d
# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
import json
from pathlib import Path
import numpy as np
import torch
from PIL import Image
from panopticapi.utils import rgb2id
from util.box_ops import masks_to_boxes
from .coco import make_coco_transforms
class CocoPanoptic:
def __init__(self, img_folder, ann_folder, ann_file, transforms=None, return_masks=True):
with open(ann_file, 'r') as f:
self.coco = json.load(f)
# sort 'images' field so that they are aligned with 'annotations'
# i.e., in alphabetical order
self.coco['images'] = sorted(self.coco['images'], key=lambda x: x['id'])
# sanity check
if "annotations" in self.coco:
for img, ann in zip(self.coco['images'], self.coco['annotations']):
assert img['file_name'][:-4] == ann['file_name'][:-4]
self.img_folder = img_folder
self.ann_folder = ann_folder
self.ann_file = ann_file
self.transforms = transforms
self.return_masks = return_masks
def __getitem__(self, idx):
ann_info = self.coco['annotations'][idx] if "annotations" in self.coco else self.coco['images'][idx]
img_path = Path(self.img_folder) / ann_info['file_name'].replace('.png', '.jpg')
ann_path = Path(self.ann_folder) / ann_info['file_name']
img = Image.open(img_path).convert('RGB')
w, h = img.size
if "segments_info" in ann_info:
masks = np.asarray(Image.open(ann_path), dtype=np.uint32)
masks = rgb2id(masks)
ids = np.array([ann['id'] for ann in ann_info['segments_info']])
masks = masks == ids[:, None, None]
masks = torch.as_tensor(masks, dtype=torch.uint8)
labels = torch.tensor([ann['category_id'] for ann in ann_info['segments_info']], dtype=torch.int64)
target = {}
target['image_id'] = torch.tensor([ann_info['image_id'] if "image_id" in ann_info else ann_info["id"]])
if self.return_masks:
target['masks'] = masks
target['labels'] = labels
target["boxes"] = masks_to_boxes(masks)
target['size'] = torch.as_tensor([int(h), int(w)])
target['orig_size'] = torch.as_tensor([int(h), int(w)])
if "segments_info" in ann_info:
for name in ['iscrowd', 'area']:
target[name] = torch.tensor([ann[name] for ann in ann_info['segments_info']])
if self.transforms is not None:
img, target = self.transforms(img, target)
return img, target
def __len__(self):
return len(self.coco['images'])
def get_height_and_width(self, idx):
img_info = self.coco['images'][idx]
height = img_info['height']
width = img_info['width']
return height, width
def build(image_set, args):
img_folder_root = Path(args.coco_path)
ann_folder_root = Path(args.coco_panoptic_path)
assert img_folder_root.exists(), f'provided COCO path {img_folder_root} does not exist'
assert ann_folder_root.exists(), f'provided COCO path {ann_folder_root} does not exist'
mode = 'panoptic'
PATHS = {
"train": ("train2017", Path("annotations") / f'{mode}_train2017.json'),
"val": ("val2017", Path("annotations") / f'{mode}_val2017.json'),
}
img_folder, ann_file = PATHS[image_set]
img_folder_path = img_folder_root / img_folder
ann_folder = ann_folder_root / f'{mode}_{img_folder}'
ann_file = ann_folder_root / ann_file
dataset = CocoPanoptic(img_folder_path, ann_folder, ann_file,
transforms=make_coco_transforms(image_set), return_masks=args.masks)
return dataset
datasets/panoptic_eval.py 0 → 100644
View file @ 0e92bd4d
# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
import json
import os
import util.misc as utils
try:
from panopticapi.evaluation import pq_compute
except ImportError:
pass
class PanopticEvaluator(object):
def __init__(self, ann_file, ann_folder, output_dir="panoptic_eval"):
self.gt_json = ann_file
self.gt_folder = ann_folder
if utils.is_main_process():
if not os.path.exists(output_dir):
os.mkdir(output_dir)
self.output_dir = output_dir
self.predictions = []
def update(self, predictions):
for p in predictions:
with open(os.path.join(self.output_dir, p["file_name"]), "wb") as f:
f.write(p.pop("png_string"))
self.predictions += predictions
def synchronize_between_processes(self):
all_predictions = utils.all_gather(self.predictions)
merged_predictions = []
for p in all_predictions:
merged_predictions += p
self.predictions = merged_predictions
def summarize(self):
if utils.is_main_process():
json_data = {"annotations": self.predictions}
predictions_json = os.path.join(self.output_dir, "predictions.json")
with open(predictions_json, "w") as f:
f.write(json.dumps(json_data))
return pq_compute(self.gt_json, predictions_json, gt_folder=self.gt_folder, pred_folder=self.output_dir)
return None
datasets/transforms.py 0 → 100644
View file @ 0e92bd4d
# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved
"""
Transforms and data augmentation for both image + bbox.
"""
import random
import PIL
import torch
import torchvision.transforms as T
import torchvision.transforms.functional as F
from util.box_ops import box_xyxy_to_cxcywh
from util.misc import interpolate
def crop(image, target, region):
cropped_image = F.crop(image, *region)
target = target.copy()
i, j, h, w = region
# should we do something wrt the original size?
target["size"] = torch.tensor([h, w])
fields = ["labels", "area", "iscrowd"]
if "boxes" in target:
boxes = target["boxes"]
max_size = torch.as_tensor([w, h], dtype=torch.float32)
cropped_boxes = boxes - torch.as_tensor([j, i, j, i])
cropped_boxes = torch.min(cropped_boxes.reshape(-1, 2, 2), max_size)
cropped_boxes = cropped_boxes.clamp(min=0)
area = (cropped_boxes[:, 1, :] - cropped_boxes[:, 0, :]).prod(dim=1)
target["boxes"] = cropped_boxes.reshape(-1, 4)
target["area"] = area
fields.append("boxes")
if "masks" in target:
# FIXME should we update the area here if there are no boxes?
target['masks'] = target['masks'][:, i:i + h, j:j + w]
fields.append("masks")
# remove elements for which the boxes or masks that have zero area
if "boxes" in target or "masks" in target:
# favor boxes selection when defining which elements to keep
# this is compatible with previous implementation
if "boxes" in target:
cropped_boxes = target['boxes'].reshape(-1, 2, 2)
keep = torch.all(cropped_boxes[:, 1, :] > cropped_boxes[:, 0, :], dim=1)
else:
keep = target['masks'].flatten(1).any(1)
for field in fields:
target[field] = target[field][keep]
return cropped_image, target
def hflip(image, target):
flipped_image = F.hflip(image)
w, h = image.size
target = target.copy()
if "boxes" in target:
boxes = target["boxes"]
boxes = boxes[:, [2, 1, 0, 3]] * torch.as_tensor([-1, 1, -1, 1]) + torch.as_tensor([w, 0, w, 0])
target["boxes"] = boxes
if "masks" in target:
target['masks'] = target['masks'].flip(-1)
return flipped_image, target
def resize(image, target, size, max_size=None):
# size can be min_size (scalar) or (w, h) tuple
def get_size_with_aspect_ratio(image_size, size, max_size=None):
w, h = image_size
if max_size is not None:
min_original_size = float(min((w, h)))
max_original_size = float(max((w, h)))
if max_original_size / min_original_size * size > max_size:
size = int(round(max_size * min_original_size / max_original_size))
if (w <= h and w == size) or (h <= w and h == size):
return (h, w)
if w < h:
ow = size
oh = int(size * h / w)
else:
oh = size
ow = int(size * w / h)
return (oh, ow)
def get_size(image_size, size, max_size=None):
if isinstance(size, (list, tuple)):
return size[::-1]
else:
return get_size_with_aspect_ratio(image_size, size, max_size)
size = get_size(image.size, size, max_size)
rescaled_image = F.resize(image, size)
if target is None:
return rescaled_image, None
ratios = tuple(float(s) / float(s_orig) for s, s_orig in zip(rescaled_image.size, image.size))
ratio_width, ratio_height = ratios
target = target.copy()
if "boxes" in target:
boxes = target["boxes"]
scaled_boxes = boxes * torch.as_tensor([ratio_width, ratio_height, ratio_width, ratio_height])
target["boxes"] = scaled_boxes
if "area" in target:
area = target["area"]
scaled_area = area * (ratio_width * ratio_height)
target["area"] = scaled_area
h, w = size
target["size"] = torch.tensor([h, w])
if "masks" in target:
target['masks'] = interpolate(
target['masks'][:, None].float(), size, mode="nearest")[:, 0] > 0.5
return rescaled_image, target
def pad(image, target, padding):
# assumes that we only pad on the bottom right corners
padded_image = F.pad(image, (0, 0, padding[0], padding[1]))
if target is None:
return padded_image, None
target = target.copy()
# should we do something wrt the original size?
target["size"] = torch.tensor(padded_image.size[::-1])
if "masks" in target:
target['masks'] = torch.nn.functional.pad(target['masks'], (0, padding[0], 0, padding[1]))
return padded_image, target
class RandomCrop(object):
def __init__(self, size):
self.size = size
def __call__(self, img, target):
region = T.RandomCrop.get_params(img, self.size)
return crop(img, target, region)
class RandomSizeCrop(object):
def __init__(self, min_size: int, max_size: int):
self.min_size = min_size
self.max_size = max_size
def __call__(self, img: PIL.Image.Image, target: dict):
w = random.randint(self.min_size, min(img.width, self.max_size))
h = random.randint(self.min_size, min(img.height, self.max_size))
region = T.RandomCrop.get_params(img, [h, w])
return crop(img, target, region)
class CenterCrop(object):
def __init__(self, size):
self.size = size
def __call__(self, img, target):
image_width, image_height = img.size
crop_height, crop_width = self.size
crop_top = int(round((image_height - crop_height) / 2.))
crop_left = int(round((image_width - crop_width) / 2.))
return crop(img, target, (crop_top, crop_left, crop_height, crop_width))
class RandomHorizontalFlip(object):
def __init__(self, p=0.5):
self.p = p
def __call__(self, img, target):
if random.random() < self.p:
return hflip(img, target)
return img, target
class RandomResize(object):
def __init__(self, sizes, max_size=None):
assert isinstance(sizes, (list, tuple))
self.sizes = sizes
self.max_size = max_size
def __call__(self, img, target=None):
size = random.choice(self.sizes)
return resize(img, target, size, self.max_size)
class RandomPad(object):
def __init__(self, max_pad):
self.max_pad = max_pad
def __call__(self, img, target):
pad_x = random.randint(0, self.max_pad)
pad_y = random.randint(0, self.max_pad)
return pad(img, target, (pad_x, pad_y))
class RandomSelect(object):
"""
Randomly selects between transforms1 and transforms2,
with probability p for transforms1 and (1 - p) for transforms2
"""
def __init__(self, transforms1, transforms2, p=0.5):
self.transforms1 = transforms1
self.transforms2 = transforms2
self.p = p
def __call__(self, img, target):
if random.random() < self.p:
return self.transforms1(img, target)
return self.transforms2(img, target)
class ToTensor(object):
def __call__(self, img, target):
return F.to_tensor(img), target
class RandomErasing(object):
def __init__(self, *args, **kwargs):
self.eraser = T.RandomErasing(*args, **kwargs)
def __call__(self, img, target):
return self.eraser(img), target
class Normalize(object):
def __init__(self, mean, std):
self.mean = mean
self.std = std
def __call__(self, image, target=None):
image = F.normalize(image, mean=self.mean, std=self.std)
if target is None:
return image, None
target = target.copy()
h, w = image.shape[-2:]
if "boxes" in target:
boxes = target["boxes"]
boxes = box_xyxy_to_cxcywh(boxes)
boxes = boxes / torch.tensor([w, h, w, h], dtype=torch.float32)
target["boxes"] = boxes
return image, target
class Compose(object):
def __init__(self, transforms):
self.transforms = transforms
def __call__(self, image, target):
for t in self.transforms:
image, target = t(image, target)
return image, target
def __repr__(self):
format_string = self.__class__.__name__ + "("
for t in self.transforms:
format_string += "\n"
format_string += " {0}".format(t)
format_string += "\n)"
return format_string
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