Merge pull request #9055 from syiming:config_frcnn_resnet_fpn_coco

PiperOrigin-RevId: 326024566

research/object_detection/configs/tf2/faster_rcnn_resnet50_v1_fpn_640x640_coco17_tpu-8.config

+# Faster RCNN with Resnet 50 v1 FPN feature extractor.
+# See Lin et al, https://arxiv.org/abs/1612.03144
+# Trained on COCO, initialized from Imagenet classification checkpoint
+# Train on TPU-8
+#
+# Achieves 31.4 mAP on COCO17 Val
+
+model {
+  faster_rcnn {
+    num_classes: 90
+    image_resizer {
+      keep_aspect_ratio_resizer {
+        min_dimension: 640
+        max_dimension: 640
+        pad_to_max_dimension: true
+      }
+    }
+    feature_extractor {
+      type: 'faster_rcnn_resnet50_fpn_keras'
+      batch_norm_trainable: true
+      fpn {
+        min_level: 2
+        max_level: 6
+      }
+      conv_hyperparams {
+        activation: RELU_6,
+        regularizer {
+          l2_regularizer {
+            weight: 0.0004
+          }
+        }
+        initializer {
+          truncated_normal_initializer {
+            stddev: 0.03
+            mean: 0.0
+          }
+        }
+        batch_norm {
+          scale: true,
+          decay: 0.997,
+          epsilon: 0.001,
+        }
+      }
+      override_base_feature_extractor_hyperparams: true
+    }
+    first_stage_anchor_generator {
+        multiscale_anchor_generator {
+          min_level: 2
+          max_level: 6
+          # According to the origial paper the value should be 8.0
+          anchor_scale: 4.0
+          aspect_ratios: [1.0, 2.0, 0.5]
+          # According to the original paper the value should be 1
+          scales_per_octave: 2
+          normalize_coordinates: false
+        }
+    }
+    first_stage_box_predictor_conv_hyperparams {
+      op: CONV
+      regularizer {
+        l2_regularizer {
+          weight: 0.0
+        }
+      }
+      initializer {
+        truncated_normal_initializer {
+          stddev: 0.01
+        }
+      }
+    }
+    first_stage_nms_score_threshold: 0.0
+    first_stage_nms_iou_threshold: 0.7
+    first_stage_max_proposals: 300
+    first_stage_localization_loss_weight: 2.0
+    first_stage_objectness_loss_weight: 1.0
+    # According to the origial paper, value should be 7.
+    initial_crop_size: 14
+    maxpool_kernel_size: 2
+    maxpool_stride: 2
+    second_stage_box_predictor {
+      mask_rcnn_box_predictor {
+        use_dropout: false
+        dropout_keep_probability: 1.0
+        fc_hyperparams {
+          op: FC
+          regularizer {
+            l2_regularizer {
+              weight: 0.0
+            }
+          }
+          initializer {
+            variance_scaling_initializer {
+              factor: 1.0
+              uniform: true
+              mode: FAN_AVG
+            }
+          }
+        }
+      }
+    }
+    second_stage_post_processing {
+      batch_non_max_suppression {
+        score_threshold: 0.0
+        iou_threshold: 0.6
+        max_detections_per_class: 100
+        max_total_detections: 300
+      }
+      score_converter: SOFTMAX
+    }
+    second_stage_localization_loss_weight: 2.0
+    second_stage_classification_loss_weight: 1.0
+    use_static_shapes: true
+    use_matmul_crop_and_resize: true
+    clip_anchors_to_image: true
+    use_static_balanced_label_sampler: true
+    use_matmul_gather_in_matcher: true
+  }
+}
+
+train_config: {
+  batch_size: 64
+  sync_replicas: true
+  startup_delay_steps: 0
+  replicas_to_aggregate: 8
+  num_steps: 25000
+  optimizer {
+    momentum_optimizer: {
+      learning_rate: {
+        cosine_decay_learning_rate {
+          learning_rate_base: 0.04
+          total_steps: 25000
+          warmup_learning_rate: .013333
+          warmup_steps: 2000
+        }
+      }
+      momentum_optimizer_value: 0.9
+    }
+    use_moving_average: false
+  }
+  fine_tune_checkpoint_version: V2
+  fine_tune_checkpoint: "PATH_TO_BE_CONFIGURED/resnet50.ckpt-1"
+  fine_tune_checkpoint_type: "classification"
+  data_augmentation_options {
+    random_horizontal_flip {
+    }
+  }
+
+  max_number_of_boxes: 100
+  unpad_groundtruth_tensors: false
+  use_bfloat16: true
+}
+
+train_input_reader: {
+  tf_record_input_reader {
+    input_path: "PATH_TO_BE_CONFIGURED/train2017-?????-of-00256.tfrecord"
+  }
+  label_map_path: "PATH_TO_BE_CONFIGURED/label_map.txt"
+}
+
+eval_config: {
+  metrics_set: "coco_detection_metrics"
+  use_moving_averages: false
+  batch_size: 1;
+}
+
+eval_input_reader: {
+  label_map_path: "PATH_TO_BE_CONFIGURED/label_map.txt"
+  shuffle: false
+  num_epochs: 1
+  tf_record_input_reader {
+    input_path: "PATH_TO_BE_CONFIGURED/val2017-?????-of-00032.tfrecord"
+  }
+}