Merge pull request #2 from tensorflow/master

Sync to tensorflow-master

object_detection/samples/configs/faster_rcnn_resnet101_voc07.config

+# Faster R-CNN with Resnet-101 (v1), configured for Pascal VOC Dataset.
+# Users should configure the fine_tune_checkpoint field in the train config as
+# well as the label_map_path and input_path fields in the train_input_reader and
+# eval_input_reader. Search for "PATH_TO_BE_CONFIGURED" to find the fields that
+# should be configured.
+
+model {
+  faster_rcnn {
+    num_classes: 20
+    image_resizer {
+      keep_aspect_ratio_resizer {
+        min_dimension: 600
+        max_dimension: 1024
+      }
+    }
+    feature_extractor {
+      type: 'faster_rcnn_resnet101'
+      first_stage_features_stride: 16
+    }
+    first_stage_anchor_generator {
+      grid_anchor_generator {
+        scales: [0.25, 0.5, 1.0, 2.0]
+        aspect_ratios: [0.5, 1.0, 2.0]
+        height_stride: 16
+        width_stride: 16
+      }
+    }
+    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
+    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
+  }
+}
+
+train_config: {
+  batch_size: 1
+  optimizer {
+    momentum_optimizer: {
+      learning_rate: {
+        manual_step_learning_rate {
+          initial_learning_rate: 0.0001
+          schedule {
+            step: 0
+            learning_rate: .0001
+          }
+          schedule {
+            step: 500000
+            learning_rate: .00001
+          }
+          schedule {
+            step: 700000
+            learning_rate: .000001
+          }
+        }
+      }
+      momentum_optimizer_value: 0.9
+    }
+    use_moving_average: false
+  }
+  gradient_clipping_by_norm: 10.0
+  fine_tune_checkpoint: "PATH_TO_BE_CONFIGURED/model.ckpt"
+  from_detection_checkpoint: true
+  num_steps: 800000
+  data_augmentation_options {
+    random_horizontal_flip {
+    }
+  }
+}
+
+train_input_reader: {
+  tf_record_input_reader {
+    input_path: "PATH_TO_BE_CONFIGURED/pascal_train.record"
+  }
+  label_map_path: "PATH_TO_BE_CONFIGURED/pascal_label_map.pbtxt"
+}
+
+eval_config: {
+  num_examples: 4952
+}
+
+eval_input_reader: {
+  tf_record_input_reader {
+    input_path: "PATH_TO_BE_CONFIGURED/pascal_val.record"
+  }
+  label_map_path: "PATH_TO_BE_CONFIGURED/pascal_label_map.pbtxt"
+  shuffle: false
+  num_readers: 1
+}

object_detection/samples/configs/faster_rcnn_resnet152_pets.config

+# Faster R-CNN with Resnet-152 (v1), configured for Oxford-IIIT Pets Dataset.
+# Users should configure the fine_tune_checkpoint field in the train config as
+# well as the label_map_path and input_path fields in the train_input_reader and
+# eval_input_reader. Search for "PATH_TO_BE_CONFIGURED" to find the fields that
+# should be configured.
+
+model {
+  faster_rcnn {
+    num_classes: 37
+    image_resizer {
+      keep_aspect_ratio_resizer {
+        min_dimension: 600
+        max_dimension: 1024
+      }
+    }
+    feature_extractor {
+      type: 'faster_rcnn_resnet152'
+      first_stage_features_stride: 16
+    }
+    first_stage_anchor_generator {
+      grid_anchor_generator {
+        scales: [0.25, 0.5, 1.0, 2.0]
+        aspect_ratios: [0.5, 1.0, 2.0]
+        height_stride: 16
+        width_stride: 16
+      }
+    }
+    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
+    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
+  }
+}
+
+train_config: {
+  batch_size: 1
+  optimizer {
+    momentum_optimizer: {
+      learning_rate: {
+        manual_step_learning_rate {
+          initial_learning_rate: 0.0003
+          schedule {
+            step: 0
+            learning_rate: .0003
+          }
+          schedule {
+            step: 900000
+            learning_rate: .00003
+          }
+          schedule {
+            step: 1200000
+            learning_rate: .000003
+          }
+        }
+      }
+      momentum_optimizer_value: 0.9
+    }
+    use_moving_average: false
+  }
+  gradient_clipping_by_norm: 10.0
+  fine_tune_checkpoint: "PATH_TO_BE_CONFIGURED/model.ckpt"
+  from_detection_checkpoint: true
+  data_augmentation_options {
+    random_horizontal_flip {
+    }
+  }
+}
+
+train_input_reader: {
+  tf_record_input_reader {
+    input_path: "PATH_TO_BE_CONFIGURED/pet_train.record"
+  }
+  label_map_path: "PATH_TO_BE_CONFIGURED/pet_label_map.pbtxt"
+}
+
+eval_config: {
+  num_examples: 2000
+}
+
+eval_input_reader: {
+  tf_record_input_reader {
+    input_path: "PATH_TO_BE_CONFIGURED/pet_val.record"
+  }
+  label_map_path: "PATH_TO_BE_CONFIGURED/pet_label_map.pbtxt"
+  shuffle: false
+  num_readers: 1
+}

object_detection/samples/configs/faster_rcnn_resnet50_pets.config

+# Faster R-CNN with Resnet-50 (v1), configured for Oxford-IIIT Pets Dataset.
+# Users should configure the fine_tune_checkpoint field in the train config as
+# well as the label_map_path and input_path fields in the train_input_reader and
+# eval_input_reader. Search for "PATH_TO_BE_CONFIGURED" to find the fields that
+# should be configured.
+
+model {
+  faster_rcnn {
+    num_classes: 37
+    image_resizer {
+      keep_aspect_ratio_resizer {
+        min_dimension: 600
+        max_dimension: 1024
+      }
+    }
+    feature_extractor {
+      type: 'faster_rcnn_resnet50'
+      first_stage_features_stride: 16
+    }
+    first_stage_anchor_generator {
+      grid_anchor_generator {
+        scales: [0.25, 0.5, 1.0, 2.0]
+        aspect_ratios: [0.5, 1.0, 2.0]
+        height_stride: 16
+        width_stride: 16
+      }
+    }
+    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
+    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
+  }
+}
+
+train_config: {
+  batch_size: 1
+  optimizer {
+    momentum_optimizer: {
+      learning_rate: {
+        manual_step_learning_rate {
+          initial_learning_rate: 0.0003
+          schedule {
+            step: 0
+            learning_rate: .0003
+          }
+          schedule {
+            step: 900000
+            learning_rate: .00003
+          }
+          schedule {
+            step: 1200000
+            learning_rate: .000003
+          }
+        }
+      }
+      momentum_optimizer_value: 0.9
+    }
+    use_moving_average: false
+  }
+  gradient_clipping_by_norm: 10.0
+  fine_tune_checkpoint: "PATH_TO_BE_CONFIGURED/model.ckpt"
+  from_detection_checkpoint: true
+  data_augmentation_options {
+    random_horizontal_flip {
+    }
+  }
+}
+
+train_input_reader: {
+  tf_record_input_reader {
+    input_path: "PATH_TO_BE_CONFIGURED/pet_train.record"
+  }
+  label_map_path: "PATH_TO_BE_CONFIGURED/pet_label_map.pbtxt"
+}
+
+eval_config: {
+  num_examples: 2000
+}
+
+eval_input_reader: {
+  tf_record_input_reader {
+    input_path: "PATH_TO_BE_CONFIGURED/pet_val.record"
+  }
+  label_map_path: "PATH_TO_BE_CONFIGURED/pet_label_map.pbtxt"
+  shuffle: false
+  num_readers: 1
+}

object_detection/samples/configs/rfcn_resnet101_pets.config

+# R-FCN with Resnet-101 (v1),  configured for Oxford-IIIT Pets Dataset.
+# Users should configure the fine_tune_checkpoint field in the train config as
+# well as the label_map_path and input_path fields in the train_input_reader and
+# eval_input_reader. Search for "PATH_TO_BE_CONFIGURED" to find the fields that
+# should be configured.
+
+model {
+  faster_rcnn {
+    num_classes: 37
+    image_resizer {
+      keep_aspect_ratio_resizer {
+        min_dimension: 600
+        max_dimension: 1024
+      }
+    }
+    feature_extractor {
+      type: 'faster_rcnn_resnet101'
+      first_stage_features_stride: 16
+    }
+    first_stage_anchor_generator {
+      grid_anchor_generator {
+        scales: [0.25, 0.5, 1.0, 2.0]
+        aspect_ratios: [0.5, 1.0, 2.0]
+        height_stride: 16
+        width_stride: 16
+      }
+    }
+    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
+    second_stage_box_predictor {
+      rfcn_box_predictor {
+        conv_hyperparams {
+          op: CONV
+          regularizer {
+            l2_regularizer {
+              weight: 0.0
+            }
+          }
+          initializer {
+            truncated_normal_initializer {
+              stddev: 0.01
+            }
+          }
+        }
+        crop_height: 18
+        crop_width: 18
+        num_spatial_bins_height: 3
+        num_spatial_bins_width: 3
+      }
+    }
+    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
+  }
+}
+
+train_config: {
+  batch_size: 1
+  optimizer {
+    momentum_optimizer: {
+      learning_rate: {
+        manual_step_learning_rate {
+          initial_learning_rate: 0.0003
+          schedule {
+            step: 0
+            learning_rate: .0003
+          }
+          schedule {
+            step: 900000
+            learning_rate: .00003
+          }
+          schedule {
+            step: 1200000
+            learning_rate: .000003
+          }
+        }
+      }
+      momentum_optimizer_value: 0.9
+    }
+    use_moving_average: false
+  }
+  gradient_clipping_by_norm: 10.0
+  fine_tune_checkpoint: "PATH_TO_BE_CONFIGURED/model.ckpt"
+  from_detection_checkpoint: true
+  data_augmentation_options {
+    random_horizontal_flip {
+    }
+  }
+}
+
+train_input_reader: {
+  tf_record_input_reader {
+    input_path: "PATH_TO_BE_CONFIGURED/pet_train.record"
+  }
+  label_map_path: "PATH_TO_BE_CONFIGURED/pet_label_map.pbtxt"
+}
+
+eval_config: {
+  num_examples: 2000
+}
+
+eval_input_reader: {
+  tf_record_input_reader {
+    input_path: "PATH_TO_BE_CONFIGURED/pet_val.record"
+  }
+  label_map_path: "PATH_TO_BE_CONFIGURED/pet_label_map.pbtxt"
+  shuffle: false
+  num_readers: 1
+}

object_detection/samples/configs/ssd_inception_v2_pets.config

+# SSD with Inception v2 configured for Oxford-IIIT Pets Dataset.
+# Users should configure the fine_tune_checkpoint field in the train config as
+# well as the label_map_path and input_path fields in the train_input_reader and
+# eval_input_reader. Search for "PATH_TO_BE_CONFIGURED" to find the fields that
+# should be configured.
+
+model {
+  ssd {
+    num_classes: 37
+    box_coder {
+      faster_rcnn_box_coder {
+        y_scale: 10.0
+        x_scale: 10.0
+        height_scale: 5.0
+        width_scale: 5.0
+      }
+    }
+    matcher {
+      argmax_matcher {
+        matched_threshold: 0.5
+        unmatched_threshold: 0.5
+        ignore_thresholds: false
+        negatives_lower_than_unmatched: true
+        force_match_for_each_row: true
+      }
+    }
+    similarity_calculator {
+      iou_similarity {
+      }
+    }
+    anchor_generator {
+      ssd_anchor_generator {
+        num_layers: 6
+        min_scale: 0.2
+        max_scale: 0.95
+        aspect_ratios: 1.0
+        aspect_ratios: 2.0
+        aspect_ratios: 0.5
+        aspect_ratios: 3.0
+        aspect_ratios: 0.3333
+        reduce_boxes_in_lowest_layer: true
+      }
+    }
+    image_resizer {
+      fixed_shape_resizer {
+        height: 300
+        width: 300
+      }
+    }
+    box_predictor {
+      convolutional_box_predictor {
+        min_depth: 0
+        max_depth: 0
+        num_layers_before_predictor: 0
+        use_dropout: false
+        dropout_keep_probability: 0.8
+        kernel_size: 3
+        box_code_size: 4
+        apply_sigmoid_to_scores: false
+        conv_hyperparams {
+          activation: RELU_6,
+          regularizer {
+            l2_regularizer {
+              weight: 0.00004
+            }
+          }
+          initializer {
+            truncated_normal_initializer {
+              stddev: 0.03
+              mean: 0.0
+            }
+          }
+        }
+      }
+    }
+    feature_extractor {
+      type: 'ssd_inception_v2'
+      min_depth: 16
+      depth_multiplier: 1.0
+      conv_hyperparams {
+        activation: RELU_6,
+        regularizer {
+          l2_regularizer {
+            weight: 0.00004
+          }
+        }
+        initializer {
+          truncated_normal_initializer {
+            stddev: 0.03
+            mean: 0.0
+          }
+        }
+        batch_norm {
+          train: true,
+          scale: true,
+          center: true,
+          decay: 0.9997,
+          epsilon: 0.001,
+        }
+      }
+    }
+    loss {
+      classification_loss {
+        weighted_sigmoid {
+          anchorwise_output: true
+        }
+      }
+      localization_loss {
+        weighted_smooth_l1 {
+          anchorwise_output: true
+        }
+      }
+      hard_example_miner {
+        num_hard_examples: 3000
+        iou_threshold: 0.99
+        loss_type: CLASSIFICATION
+        max_negatives_per_positive: 3
+        min_negatives_per_image: 0
+      }
+      classification_weight: 1.0
+      localization_weight: 1.0
+    }
+    normalize_loss_by_num_matches: true
+    post_processing {
+      batch_non_max_suppression {
+        score_threshold: 1e-8
+        iou_threshold: 0.6
+        max_detections_per_class: 100
+        max_total_detections: 100
+      }
+      score_converter: SIGMOID
+    }
+  }
+}
+
+train_config: {
+  batch_size: 24
+  optimizer {
+    rms_prop_optimizer: {
+      learning_rate: {
+        exponential_decay_learning_rate {
+          initial_learning_rate: 0.004
+          decay_steps: 800720
+          decay_factor: 0.95
+        }
+      }
+      momentum_optimizer_value: 0.9
+      decay: 0.9
+      epsilon: 1.0
+    }
+  }
+  fine_tune_checkpoint: "PATH_TO_BE_CONFIGURED/model.ckpt"
+  from_detection_checkpoint: true
+  data_augmentation_options {
+    random_horizontal_flip {
+    }
+  }
+  data_augmentation_options {
+    ssd_random_crop {
+    }
+  }
+}
+
+train_input_reader: {
+  tf_record_input_reader {
+    input_path: "PATH_TO_BE_CONFIGURED/pet_train.record"
+  }
+  label_map_path: "PATH_TO_BE_CONFIGURED/pet_label_map.pbtxt"
+}
+
+eval_config: {
+  num_examples: 2000
+}
+
+eval_input_reader: {
+  tf_record_input_reader {
+    input_path: "PATH_TO_BE_CONFIGURED/pet_val.record"
+  }
+  label_map_path: "PATH_TO_BE_CONFIGURED/pet_label_map.pbtxt"
+  shuffle: false
+  num_readers: 1
+}

object_detection/samples/configs/ssd_mobilenet_v1_pets.config

+# SSD with Mobilenet v1, configured for Oxford-IIIT Pets Dataset.
+# Users should configure the fine_tune_checkpoint field in the train config as
+# well as the label_map_path and input_path fields in the train_input_reader and
+# eval_input_reader. Search for "PATH_TO_BE_CONFIGURED" to find the fields that
+# should be configured.
+
+model {
+  ssd {
+    num_classes: 37
+    box_coder {
+      faster_rcnn_box_coder {
+        y_scale: 10.0
+        x_scale: 10.0
+        height_scale: 5.0
+        width_scale: 5.0
+      }
+    }
+    matcher {
+      argmax_matcher {
+        matched_threshold: 0.5
+        unmatched_threshold: 0.5
+        ignore_thresholds: false
+        negatives_lower_than_unmatched: true
+        force_match_for_each_row: true
+      }
+    }
+    similarity_calculator {
+      iou_similarity {
+      }
+    }
+    anchor_generator {
+      ssd_anchor_generator {
+        num_layers: 6
+        min_scale: 0.2
+        max_scale: 0.95
+        aspect_ratios: 1.0
+        aspect_ratios: 2.0
+        aspect_ratios: 0.5
+        aspect_ratios: 3.0
+        aspect_ratios: 0.3333
+      }
+    }
+    image_resizer {
+      fixed_shape_resizer {
+        height: 300
+        width: 300
+      }
+    }
+    box_predictor {
+      convolutional_box_predictor {
+        min_depth: 0
+        max_depth: 0
+        num_layers_before_predictor: 0
+        use_dropout: false
+        dropout_keep_probability: 0.8
+        kernel_size: 1
+        box_code_size: 4
+        apply_sigmoid_to_scores: false
+        conv_hyperparams {
+          activation: RELU_6,
+          regularizer {
+            l2_regularizer {
+              weight: 0.00004
+            }
+          }
+          initializer {
+            truncated_normal_initializer {
+              stddev: 0.03
+              mean: 0.0
+            }
+          }
+          batch_norm {
+            train: true,
+            scale: true,
+            center: true,
+            decay: 0.9997,
+            epsilon: 0.001,
+          }
+        }
+      }
+    }
+    feature_extractor {
+      type: 'ssd_mobilenet_v1'
+      min_depth: 16
+      depth_multiplier: 1.0
+      conv_hyperparams {
+        activation: RELU_6,
+        regularizer {
+          l2_regularizer {
+            weight: 0.00004
+          }
+        }
+        initializer {
+          truncated_normal_initializer {
+            stddev: 0.03
+            mean: 0.0
+          }
+        }
+        batch_norm {
+          train: true,
+          scale: true,
+          center: true,
+          decay: 0.9997,
+          epsilon: 0.001,
+        }
+      }
+    }
+    loss {
+      classification_loss {
+        weighted_sigmoid {
+          anchorwise_output: true
+        }
+      }
+      localization_loss {
+        weighted_smooth_l1 {
+          anchorwise_output: true
+        }
+      }
+      hard_example_miner {
+        num_hard_examples: 3000
+        iou_threshold: 0.99
+        loss_type: CLASSIFICATION
+        max_negatives_per_positive: 3
+        min_negatives_per_image: 0
+      }
+      classification_weight: 1.0
+      localization_weight: 1.0
+    }
+    normalize_loss_by_num_matches: true
+    post_processing {
+      batch_non_max_suppression {
+        score_threshold: 1e-8
+        iou_threshold: 0.6
+        max_detections_per_class: 100
+        max_total_detections: 100
+      }
+      score_converter: SIGMOID
+    }
+  }
+}
+
+train_config: {
+  batch_size: 24
+  optimizer {
+    rms_prop_optimizer: {
+      learning_rate: {
+        exponential_decay_learning_rate {
+          initial_learning_rate: 0.004
+          decay_steps: 800720
+          decay_factor: 0.95
+        }
+      }
+      momentum_optimizer_value: 0.9
+      decay: 0.9
+      epsilon: 1.0
+    }
+  }
+  fine_tune_checkpoint: "PATH_TO_BE_CONFIGURED/model.ckpt"
+  from_detection_checkpoint: true
+  data_augmentation_options {
+    random_horizontal_flip {
+    }
+  }
+  data_augmentation_options {
+    ssd_random_crop {
+    }
+  }
+}
+
+train_input_reader: {
+  tf_record_input_reader {
+    input_path: "PATH_TO_BE_CONFIGURED/pet_train.record"
+  }
+  label_map_path: "PATH_TO_BE_CONFIGURED/pet_label_map.pbtxt"
+}
+
+eval_config: {
+  num_examples: 2000
+}
+
+eval_input_reader: {
+  tf_record_input_reader {
+    input_path: "PATH_TO_BE_CONFIGURED/pet_val.record"
+  }
+  label_map_path: "PATH_TO_BE_CONFIGURED/pet_label_map.pbtxt"
+  shuffle: false
+  num_readers: 1
+}

object_detection/test_images/image_info.txt

+
+Image provenance:
+image1.jpg: https://commons.wikimedia.org/wiki/File:Baegle_dwa.jpg
+image2.jpg: Michael Miley,
+  https://www.flickr.com/photos/mike_miley/4678754542/in/photolist-88rQHL-88oBVp-88oC2B-88rS6J-88rSqm-88oBLv-88oBC4
+

object_detection/train.py

+# Copyright 2017 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.
+# ==============================================================================
+
+r"""Training executable for detection models.
+
+This executable is used to train DetectionModels. There are two ways of
+configuring the training job:
+
+1) A single pipeline_pb2.TrainEvalPipelineConfig configuration file
+can be specified by --pipeline_config_path.
+
+Example usage:
+    ./train \
+        --logtostderr \
+        --train_dir=path/to/train_dir \
+        --pipeline_config_path=pipeline_config.pbtxt
+
+2) Three configuration files can be provided: a model_pb2.DetectionModel
+configuration file to define what type of DetectionModel is being trained, an
+input_reader_pb2.InputReader file to specify what training data will be used and
+a train_pb2.TrainConfig file to configure training parameters.
+
+Example usage:
+    ./train \
+        --logtostderr \
+        --train_dir=path/to/train_dir \
+        --model_config_path=model_config.pbtxt \
+        --train_config_path=train_config.pbtxt \
+        --input_config_path=train_input_config.pbtxt
+"""
+
+import functools
+import json
+import os
+import tensorflow as tf
+
+from google.protobuf import text_format
+
+from object_detection import trainer
+from object_detection.builders import input_reader_builder
+from object_detection.builders import model_builder
+from object_detection.protos import input_reader_pb2
+from object_detection.protos import model_pb2
+from object_detection.protos import pipeline_pb2
+from object_detection.protos import train_pb2
+
+tf.logging.set_verbosity(tf.logging.INFO)
+
+flags = tf.app.flags
+flags.DEFINE_string('master', '', 'BNS name of the TensorFlow master to use.')
+flags.DEFINE_integer('task', 0, 'task id')
+flags.DEFINE_integer('num_clones', 1, 'Number of clones to deploy per worker.')
+flags.DEFINE_boolean('clone_on_cpu', False,
+                     'Force clones to be deployed on CPU.  Note that even if '
+                     'set to False (allowing ops to run on gpu), some ops may '
+                     'still be run on the CPU if they have no GPU kernel.')
+flags.DEFINE_integer('worker_replicas', 1, 'Number of worker+trainer '
+                     'replicas.')
+flags.DEFINE_integer('ps_tasks', 0,
+                     'Number of parameter server tasks. If None, does not use '
+                     'a parameter server.')
+flags.DEFINE_string('train_dir', '',
+                    'Directory to save the checkpoints and training summaries.')
+
+flags.DEFINE_string('pipeline_config_path', '',
+                    'Path to a pipeline_pb2.TrainEvalPipelineConfig config '
+                    'file. If provided, other configs are ignored')
+
+flags.DEFINE_string('train_config_path', '',
+                    'Path to a train_pb2.TrainConfig config file.')
+flags.DEFINE_string('input_config_path', '',
+                    'Path to an input_reader_pb2.InputReader config file.')
+flags.DEFINE_string('model_config_path', '',
+                    'Path to a model_pb2.DetectionModel config file.')
+
+FLAGS = flags.FLAGS
+
+
+def get_configs_from_pipeline_file():
+  """Reads training configuration from a pipeline_pb2.TrainEvalPipelineConfig.
+
+  Reads training config from file specified by pipeline_config_path flag.
+
+  Returns:
+    model_config: model_pb2.DetectionModel
+    train_config: train_pb2.TrainConfig
+    input_config: input_reader_pb2.InputReader
+  """
+  pipeline_config = pipeline_pb2.TrainEvalPipelineConfig()
+  with tf.gfile.GFile(FLAGS.pipeline_config_path, 'r') as f:
+    text_format.Merge(f.read(), pipeline_config)
+
+  model_config = pipeline_config.model
+  train_config = pipeline_config.train_config
+  input_config = pipeline_config.train_input_reader
+
+  return model_config, train_config, input_config
+
+
+def get_configs_from_multiple_files():
+  """Reads training configuration from multiple config files.
+
+  Reads the training config from the following files:
+    model_config: Read from --model_config_path
+    train_config: Read from --train_config_path
+    input_config: Read from --input_config_path
+
+  Returns:
+    model_config: model_pb2.DetectionModel
+    train_config: train_pb2.TrainConfig
+    input_config: input_reader_pb2.InputReader
+  """
+  train_config = train_pb2.TrainConfig()
+  with tf.gfile.GFile(FLAGS.train_config_path, 'r') as f:
+    text_format.Merge(f.read(), train_config)
+
+  model_config = model_pb2.DetectionModel()
+  with tf.gfile.GFile(FLAGS.model_config_path, 'r') as f:
+    text_format.Merge(f.read(), model_config)
+
+  input_config = input_reader_pb2.InputReader()
+  with tf.gfile.GFile(FLAGS.input_config_path, 'r') as f:
+    text_format.Merge(f.read(), input_config)
+
+  return model_config, train_config, input_config
+
+
+def main(_):
+  assert FLAGS.train_dir, '`train_dir` is missing.'
+  if FLAGS.pipeline_config_path:
+    model_config, train_config, input_config = get_configs_from_pipeline_file()
+  else:
+    model_config, train_config, input_config = get_configs_from_multiple_files()
+
+  model_fn = functools.partial(
+      model_builder.build,
+      model_config=model_config,
+      is_training=True)
+
+  create_input_dict_fn = functools.partial(
+      input_reader_builder.build, input_config)
+
+  env = json.loads(os.environ.get('TF_CONFIG', '{}'))
+  cluster_data = env.get('cluster', None)
+  cluster = tf.train.ClusterSpec(cluster_data) if cluster_data else None
+  task_data = env.get('task', None) or {'type': 'master', 'index': 0}
+  task_info = type('TaskSpec', (object,), task_data)
+
+  # Parameters for a single worker.
+  ps_tasks = 0
+  worker_replicas = 1
+  worker_job_name = 'lonely_worker'
+  task = 0
+  is_chief = True
+  master = ''
+
+  if cluster_data and 'worker' in cluster_data:
+    # Number of total worker replicas include "worker"s and the "master".
+    worker_replicas = len(cluster_data['worker']) + 1
+  if cluster_data and 'ps' in cluster_data:
+    ps_tasks = len(cluster_data['ps'])
+
+  if worker_replicas > 1 and ps_tasks < 1:
+    raise ValueError('At least 1 ps task is needed for distributed training.')
+
+  if worker_replicas >= 1 and ps_tasks > 0:
+    # Set up distributed training.
+    server = tf.train.Server(tf.train.ClusterSpec(cluster), protocol='grpc',
+                             job_name=task_info.type,
+                             task_index=task_info.index)
+    if task_info.type == 'ps':
+      server.join()
+      return
+
+    worker_job_name = '%s/task:%d' % (task_info.type, task_info.index)
+    task = task_info.index
+    is_chief = (task_info.type == 'master')
+    master = server.target
+
+  trainer.train(create_input_dict_fn, model_fn, train_config, master, task,
+                FLAGS.num_clones, worker_replicas, FLAGS.clone_on_cpu, ps_tasks,
+                worker_job_name, is_chief, FLAGS.train_dir)
+
+
+if __name__ == '__main__':
+  tf.app.run()

object_detection/trainer.py

+# Copyright 2017 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.
+# ==============================================================================
+
+"""Detection model trainer.
+
+This file provides a generic training method that can be used to train a
+DetectionModel.
+"""
+
+import functools
+
+import tensorflow as tf
+
+from object_detection.builders import optimizer_builder
+from object_detection.builders import preprocessor_builder
+from object_detection.core import batcher
+from object_detection.core import preprocessor
+from object_detection.core import standard_fields as fields
+from object_detection.utils import ops as util_ops
+from object_detection.utils import variables_helper
+from deployment import model_deploy
+
+slim = tf.contrib.slim
+
+
+def _create_input_queue(batch_size_per_clone, create_tensor_dict_fn,
+                        batch_queue_capacity, num_batch_queue_threads,
+                        prefetch_queue_capacity, data_augmentation_options):
+  """Sets up reader, prefetcher and returns input queue.
+
+  Args:
+    batch_size_per_clone: batch size to use per clone.
+    create_tensor_dict_fn: function to create tensor dictionary.
+    batch_queue_capacity: maximum number of elements to store within a queue.
+    num_batch_queue_threads: number of threads to use for batching.
+    prefetch_queue_capacity: maximum capacity of the queue used to prefetch
+                             assembled batches.
+    data_augmentation_options: a list of tuples, where each tuple contains a
+      data augmentation function and a dictionary containing arguments and their
+      values (see preprocessor.py).
+
+  Returns:
+    input queue: a batcher.BatchQueue object holding enqueued tensor_dicts
+      (which hold images, boxes and targets).  To get a batch of tensor_dicts,
+      call input_queue.Dequeue().
+  """
+  tensor_dict = create_tensor_dict_fn()
+
+  tensor_dict[fields.InputDataFields.image] = tf.expand_dims(
+      tensor_dict[fields.InputDataFields.image], 0)
+
+  images = tensor_dict[fields.InputDataFields.image]
+  float_images = tf.to_float(images)
+  tensor_dict[fields.InputDataFields.image] = float_images
+
+  if data_augmentation_options:
+    tensor_dict = preprocessor.preprocess(tensor_dict,
+                                          data_augmentation_options)
+
+  input_queue = batcher.BatchQueue(
+      tensor_dict,
+      batch_size=batch_size_per_clone,
+      batch_queue_capacity=batch_queue_capacity,
+      num_batch_queue_threads=num_batch_queue_threads,
+      prefetch_queue_capacity=prefetch_queue_capacity)
+  return input_queue
+
+
+def _get_inputs(input_queue, num_classes):
+  """Dequeue batch and construct inputs to object detection model.
+
+  Args:
+    input_queue: BatchQueue object holding enqueued tensor_dicts.
+    num_classes: Number of classes.
+
+  Returns:
+    images: a list of 3-D float tensor of images.
+    locations_list: a list of tensors of shape [num_boxes, 4]
+      containing the corners of the groundtruth boxes.
+    classes_list: a list of padded one-hot tensors containing target classes.
+    masks_list: a list of 3-D float tensors of shape [num_boxes, image_height,
+      image_width] containing instance masks for objects if present in the
+      input_queue. Else returns None.
+  """
+  read_data_list = input_queue.dequeue()
+  label_id_offset = 1
+  def extract_images_and_targets(read_data):
+    image = read_data[fields.InputDataFields.image]
+    location_gt = read_data[fields.InputDataFields.groundtruth_boxes]
+    classes_gt = tf.cast(read_data[fields.InputDataFields.groundtruth_classes],
+                         tf.int32)
+    classes_gt -= label_id_offset
+    classes_gt = util_ops.padded_one_hot_encoding(indices=classes_gt,
+                                                  depth=num_classes, left_pad=0)
+    masks_gt = read_data.get(fields.InputDataFields.groundtruth_instance_masks)
+    return image, location_gt, classes_gt, masks_gt
+  return zip(*map(extract_images_and_targets, read_data_list))
+
+
+def _create_losses(input_queue, create_model_fn):
+  """Creates loss function for a DetectionModel.
+
+  Args:
+    input_queue: BatchQueue object holding enqueued tensor_dicts.
+    create_model_fn: A function to create the DetectionModel.
+  """
+  detection_model = create_model_fn()
+  (images, groundtruth_boxes_list, groundtruth_classes_list,
+   groundtruth_masks_list
+  ) = _get_inputs(input_queue, detection_model.num_classes)
+  images = [detection_model.preprocess(image) for image in images]
+  images = tf.concat(images, 0)
+  if any(mask is None for mask in groundtruth_masks_list):
+    groundtruth_masks_list = None
+
+  detection_model.provide_groundtruth(groundtruth_boxes_list,
+                                      groundtruth_classes_list,
+                                      groundtruth_masks_list)
+  prediction_dict = detection_model.predict(images)
+
+  losses_dict = detection_model.loss(prediction_dict)
+  for loss_tensor in losses_dict.values():
+    tf.losses.add_loss(loss_tensor)
+
+
+def train(create_tensor_dict_fn, create_model_fn, train_config, master, task,
+          num_clones, worker_replicas, clone_on_cpu, ps_tasks, worker_job_name,
+          is_chief, train_dir):
+  """Training function for detection models.
+
+  Args:
+    create_tensor_dict_fn: a function to create a tensor input dictionary.
+    create_model_fn: a function that creates a DetectionModel and generates
+                     losses.
+    train_config: a train_pb2.TrainConfig protobuf.
+    master: BNS name of the TensorFlow master to use.
+    task: The task id of this training instance.
+    num_clones: The number of clones to run per machine.
+    worker_replicas: The number of work replicas to train with.
+    clone_on_cpu: True if clones should be forced to run on CPU.
+    ps_tasks: Number of parameter server tasks.
+    worker_job_name: Name of the worker job.
+    is_chief: Whether this replica is the chief replica.
+    train_dir: Directory to write checkpoints and training summaries to.
+  """
+
+  detection_model = create_model_fn()
+  data_augmentation_options = [
+      preprocessor_builder.build(step)
+      for step in train_config.data_augmentation_options]
+
+  with tf.Graph().as_default():
+    # Build a configuration specifying multi-GPU and multi-replicas.
+    deploy_config = model_deploy.DeploymentConfig(
+        num_clones=num_clones,
+        clone_on_cpu=clone_on_cpu,
+        replica_id=task,
+        num_replicas=worker_replicas,
+        num_ps_tasks=ps_tasks,
+        worker_job_name=worker_job_name)
+
+    # Place the global step on the device storing the variables.
+    with tf.device(deploy_config.variables_device()):
+      global_step = slim.create_global_step()
+
+    with tf.device(deploy_config.inputs_device()):
+      input_queue = _create_input_queue(train_config.batch_size // num_clones,
+                                        create_tensor_dict_fn,
+                                        train_config.batch_queue_capacity,
+                                        train_config.num_batch_queue_threads,
+                                        train_config.prefetch_queue_capacity,
+                                        data_augmentation_options)
+
+    # Gather initial summaries.
+    summaries = set(tf.get_collection(tf.GraphKeys.SUMMARIES))
+    global_summaries = set([])
+
+    model_fn = functools.partial(_create_losses,
+                                 create_model_fn=create_model_fn)
+    clones = model_deploy.create_clones(deploy_config, model_fn, [input_queue])
+    first_clone_scope = clones[0].scope
+
+    # Gather update_ops from the first clone. These contain, for example,
+    # the updates for the batch_norm variables created by model_fn.
+    update_ops = tf.get_collection(tf.GraphKeys.UPDATE_OPS, first_clone_scope)
+
+    with tf.device(deploy_config.optimizer_device()):
+      training_optimizer = optimizer_builder.build(train_config.optimizer,
+                                                   global_summaries)
+
+    sync_optimizer = None
+    if train_config.sync_replicas:
+      training_optimizer = tf.SyncReplicasOptimizer(
+          training_optimizer,
+          replicas_to_aggregate=train_config.replicas_to_aggregate,
+          total_num_replicas=train_config.worker_replicas)
+      sync_optimizer = training_optimizer
+
+    # Create ops required to initialize the model from a given checkpoint.
+    init_fn = None
+    if train_config.fine_tune_checkpoint:
+      init_fn = detection_model.restore_fn(
+          train_config.fine_tune_checkpoint,
+          from_detection_checkpoint=train_config.from_detection_checkpoint)
+
+    with tf.device(deploy_config.optimizer_device()):
+      total_loss, grads_and_vars = model_deploy.optimize_clones(
+          clones, training_optimizer, regularization_losses=None)
+      total_loss = tf.check_numerics(total_loss, 'LossTensor is inf or nan.')
+
+      # Optionally multiply bias gradients by train_config.bias_grad_multiplier.
+      if train_config.bias_grad_multiplier:
+        biases_regex_list = ['.*/biases']
+        grads_and_vars = variables_helper.multiply_gradients_matching_regex(
+            grads_and_vars,
+            biases_regex_list,
+            multiplier=train_config.bias_grad_multiplier)
+
+      # Optionally freeze some layers by setting their gradients to be zero.
+      if train_config.freeze_variables:
+        grads_and_vars = variables_helper.freeze_gradients_matching_regex(
+            grads_and_vars, train_config.freeze_variables)
+
+      # Optionally clip gradients
+      if train_config.gradient_clipping_by_norm > 0:
+        with tf.name_scope('clip_grads'):
+          grads_and_vars = slim.learning.clip_gradient_norms(
+              grads_and_vars, train_config.gradient_clipping_by_norm)
+
+      # Create gradient updates.
+      grad_updates = training_optimizer.apply_gradients(grads_and_vars,
+                                                        global_step=global_step)
+      update_ops.append(grad_updates)
+
+      update_op = tf.group(*update_ops)
+      with tf.control_dependencies([update_op]):
+        train_tensor = tf.identity(total_loss, name='train_op')
+
+    # Add summaries.
+    for model_var in slim.get_model_variables():
+      global_summaries.add(tf.summary.histogram(model_var.op.name, model_var))
+    for loss_tensor in tf.losses.get_losses():
+      global_summaries.add(tf.summary.scalar(loss_tensor.op.name, loss_tensor))
+    global_summaries.add(
+        tf.summary.scalar('TotalLoss', tf.losses.get_total_loss()))
+
+    # Add the summaries from the first clone. These contain the summaries
+    # created by model_fn and either optimize_clones() or _gather_clone_loss().
+    summaries |= set(tf.get_collection(tf.GraphKeys.SUMMARIES,
+                                       first_clone_scope))
+    summaries |= global_summaries
+
+    # Merge all summaries together.
+    summary_op = tf.summary.merge(list(summaries), name='summary_op')
+
+    # Soft placement allows placing on CPU ops without GPU implementation.
+    session_config = tf.ConfigProto(allow_soft_placement=True,
+                                    log_device_placement=False)
+
+    # Save checkpoints regularly.
+    keep_checkpoint_every_n_hours = train_config.keep_checkpoint_every_n_hours
+    saver = tf.train.Saver(
+        keep_checkpoint_every_n_hours=keep_checkpoint_every_n_hours)
+
+    slim.learning.train(
+        train_tensor,
+        logdir=train_dir,
+        master=master,
+        is_chief=is_chief,
+        session_config=session_config,
+        startup_delay_steps=train_config.startup_delay_steps,
+        init_fn=init_fn,
+        summary_op=summary_op,
+        number_of_steps=(
+            train_config.num_steps if train_config.num_steps else None),
+        save_summaries_secs=120,
+        sync_optimizer=sync_optimizer,
+        saver=saver)

object_detection/trainer_test.py

+# Copyright 2017 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.
+# ==============================================================================
+
+"""Tests for object_detection.trainer."""
+
+import tensorflow as tf
+
+from google.protobuf import text_format
+
+from object_detection import trainer
+from object_detection.core import losses
+from object_detection.core import model
+from object_detection.core import standard_fields as fields
+from object_detection.protos import train_pb2
+
+
+NUMBER_OF_CLASSES = 2
+
+
+def get_input_function():
+  """A function to get test inputs. Returns an image with one box."""
+  image = tf.random_uniform([32, 32, 3], dtype=tf.float32)
+  class_label = tf.random_uniform(
+      [1], minval=0, maxval=NUMBER_OF_CLASSES, dtype=tf.int32)
+  box_label = tf.random_uniform(
+      [1, 4], minval=0.4, maxval=0.6, dtype=tf.float32)
+
+  return {
+      fields.InputDataFields.image: image,
+      fields.InputDataFields.groundtruth_classes: class_label,
+      fields.InputDataFields.groundtruth_boxes: box_label
+  }
+
+
+class FakeDetectionModel(model.DetectionModel):
+  """A simple (and poor) DetectionModel for use in test."""
+
+  def __init__(self):
+    super(FakeDetectionModel, self).__init__(num_classes=NUMBER_OF_CLASSES)
+    self._classification_loss = losses.WeightedSigmoidClassificationLoss(
+        anchorwise_output=True)
+    self._localization_loss = losses.WeightedSmoothL1LocalizationLoss(
+        anchorwise_output=True)
+
+  def preprocess(self, inputs):
+    """Input preprocessing, resizes images to 28x28.
+
+    Args:
+      inputs: a [batch, height_in, width_in, channels] float32 tensor
+        representing a batch of images with values between 0 and 255.0.
+
+    Returns:
+      preprocessed_inputs: a [batch, 28, 28, channels] float32 tensor.
+    """
+    return tf.image.resize_images(inputs, [28, 28])
+
+  def predict(self, preprocessed_inputs):
+    """Prediction tensors from inputs tensor.
+
+    Args:
+      preprocessed_inputs: a [batch, 28, 28, channels] float32 tensor.
+
+    Returns:
+      prediction_dict: a dictionary holding prediction tensors to be
+        passed to the Loss or Postprocess functions.
+    """
+    flattened_inputs = tf.contrib.layers.flatten(preprocessed_inputs)
+    class_prediction = tf.contrib.layers.fully_connected(
+        flattened_inputs, self._num_classes)
+    box_prediction = tf.contrib.layers.fully_connected(flattened_inputs, 4)
+
+    return {
+        'class_predictions_with_background': tf.reshape(
+            class_prediction, [-1, 1, self._num_classes]),
+        'box_encodings': tf.reshape(box_prediction, [-1, 1, 4])
+    }
+
+  def postprocess(self, prediction_dict, **params):
+    """Convert predicted output tensors to final detections. Unused.
+
+    Args:
+      prediction_dict: a dictionary holding prediction tensors.
+      **params: Additional keyword arguments for specific implementations of
+        DetectionModel.
+
+    Returns:
+      detections: a dictionary with empty fields.
+    """
+    return {
+        'detection_boxes': None,
+        'detection_scores': None,
+        'detection_classes': None,
+        'num_detections': None
+    }
+
+  def loss(self, prediction_dict):
+    """Compute scalar loss tensors with respect to provided groundtruth.
+
+    Calling this function requires that groundtruth tensors have been
+    provided via the provide_groundtruth function.
+
+    Args:
+      prediction_dict: a dictionary holding predicted tensors
+
+    Returns:
+      a dictionary mapping strings (loss names) to scalar tensors representing
+        loss values.
+    """
+    batch_reg_targets = tf.stack(
+        self.groundtruth_lists(fields.BoxListFields.boxes))
+    batch_cls_targets = tf.stack(
+        self.groundtruth_lists(fields.BoxListFields.classes))
+    weights = tf.constant(
+        1.0, dtype=tf.float32,
+        shape=[len(self.groundtruth_lists(fields.BoxListFields.boxes)), 1])
+
+    location_losses = self._localization_loss(
+        prediction_dict['box_encodings'], batch_reg_targets,
+        weights=weights)
+    cls_losses = self._classification_loss(
+        prediction_dict['class_predictions_with_background'], batch_cls_targets,
+        weights=weights)
+
+    loss_dict = {
+        'localization_loss': tf.reduce_sum(location_losses),
+        'classification_loss': tf.reduce_sum(cls_losses),
+    }
+    return loss_dict
+
+  def restore_fn(self, checkpoint_path, from_detection_checkpoint=True):
+    """Return callable for loading a checkpoint into the tensorflow graph.
+
+    Args:
+      checkpoint_path: path to checkpoint to restore.
+      from_detection_checkpoint: whether to restore from a full detection
+        checkpoint (with compatible variable names) or to restore from a
+        classification checkpoint for initialization prior to training.
+
+    Returns:
+      a callable which takes a tf.Session and does nothing.
+    """
+    def restore(unused_sess):
+      return
+    return restore
+
+
+class TrainerTest(tf.test.TestCase):
+
+  def test_configure_trainer_and_train_two_steps(self):
+    train_config_text_proto = """
+    optimizer {
+      adam_optimizer {
+        learning_rate {
+          constant_learning_rate {
+            learning_rate: 0.01
+          }
+        }
+      }
+    }
+    data_augmentation_options {
+      random_adjust_brightness {
+        max_delta: 0.2
+      }
+    }
+    data_augmentation_options {
+      random_adjust_contrast {
+        min_delta: 0.7
+        max_delta: 1.1
+      }
+    }
+    num_steps: 2
+    """
+    train_config = train_pb2.TrainConfig()
+    text_format.Merge(train_config_text_proto, train_config)
+
+    train_dir = self.get_temp_dir()
+
+    trainer.train(create_tensor_dict_fn=get_input_function,
+                  create_model_fn=FakeDetectionModel,
+                  train_config=train_config,
+                  master='',
+                  task=0,
+                  num_clones=1,
+                  worker_replicas=1,
+                  clone_on_cpu=True,
+                  ps_tasks=0,
+                  worker_job_name='worker',
+                  is_chief=True,
+                  train_dir=train_dir)
+
+
+if __name__ == '__main__':
+  tf.test.main()

object_detection/utils/BUILD

+# Tensorflow Object Detection API: Utility functions.
+
+package(
+    default_visibility = ["//visibility:public"],
+)
+
+licenses(["notice"])
+
+# Apache 2.0
+
+py_library(
+    name = "category_util",
+    srcs = ["category_util.py"],
+    deps = ["//tensorflow"],
+)
+
+py_library(
+    name = "dataset_util",
+    srcs = ["dataset_util.py"],
+    deps = [
+        "//tensorflow",
+    ],
+)
+
+py_library(
+    name = "label_map_util",
+    srcs = ["label_map_util.py"],
+    deps = [
+        "//third_party/py/google/protobuf",
+        "//tensorflow",
+        "//tensorflow_models/object_detection/protos:string_int_label_map_py_pb2",
+    ],
+)
+
+py_library(
+    name = "learning_schedules",
+    srcs = ["learning_schedules.py"],
+    deps = ["//tensorflow"],
+)
+
+py_library(
+    name = "metrics",
+    srcs = ["metrics.py"],
+    deps = ["//third_party/py/numpy"],
+)
+
+py_library(
+    name = "np_box_list",
+    srcs = ["np_box_list.py"],
+    deps = ["//tensorflow"],
+)
+
+py_library(
+    name = "np_box_list_ops",
+    srcs = ["np_box_list_ops.py"],
+    deps = [
+        ":np_box_list",
+        ":np_box_ops",
+        "//tensorflow",
+    ],
+)
+
+py_library(
+    name = "np_box_ops",
+    srcs = ["np_box_ops.py"],
+    deps = ["//tensorflow"],
+)
+
+py_library(
+    name = "object_detection_evaluation",
+    srcs = ["object_detection_evaluation.py"],
+    deps = [
+        ":metrics",
+        ":per_image_evaluation",
+        "//tensorflow",
+    ],
+)
+
+py_library(
+    name = "ops",
+    srcs = ["ops.py"],
+    deps = [
+        ":static_shape",
+        "//tensorflow",
+        "//tensorflow_models/object_detection/core:box_list",
+        "//tensorflow_models/object_detection/core:box_list_ops",
+        "//tensorflow_models/object_detection/core:standard_fields",
+    ],
+)
+
+py_library(
+    name = "per_image_evaluation",
+    srcs = ["per_image_evaluation.py"],
+    deps = [
+        ":np_box_list",
+        ":np_box_list_ops",
+        "//tensorflow",
+    ],
+)
+
+py_library(
+    name = "shape_utils",
+    srcs = ["shape_utils.py"],
+    deps = ["//tensorflow"],
+)
+
+py_library(
+    name = "static_shape",
+    srcs = ["static_shape.py"],
+    deps = [],
+)
+
+py_library(
+    name = "test_utils",
+    srcs = ["test_utils.py"],
+    deps = [
+        "//tensorflow",
+        "//tensorflow_models/object_detection/core:anchor_generator",
+        "//tensorflow_models/object_detection/core:box_coder",
+        "//tensorflow_models/object_detection/core:box_list",
+        "//tensorflow_models/object_detection/core:box_predictor",
+        "//tensorflow_models/object_detection/core:matcher",
+    ],
+)
+
+py_library(
+    name = "variables_helper",
+    srcs = ["variables_helper.py"],
+    deps = [
+        "//tensorflow",
+    ],
+)
+
+py_library(
+    name = "visualization_utils",
+    srcs = ["visualization_utils.py"],
+    deps = [
+        "//third_party/py/PIL:pil",
+        "//tensorflow",
+    ],
+)
+
+py_test(
+    name = "category_util_test",
+    srcs = ["category_util_test.py"],
+    deps = [
+        ":category_util",
+        "//tensorflow",
+    ],
+)
+
+py_test(
+    name = "dataset_util_test",
+    srcs = ["dataset_util_test.py"],
+    deps = [
+        ":dataset_util",
+        "//tensorflow",
+    ],
+)
+
+py_test(
+    name = "label_map_util_test",
+    srcs = ["label_map_util_test.py"],
+    deps = [
+        ":label_map_util",
+        "//tensorflow",
+    ],
+)
+
+py_test(
+    name = "learning_schedules_test",
+    srcs = ["learning_schedules_test.py"],
+    deps = [
+        ":learning_schedules",
+        "//tensorflow",
+    ],
+)
+
+py_test(
+    name = "metrics_test",
+    srcs = ["metrics_test.py"],
+    deps = [
+        ":metrics",
+        "//tensorflow",
+    ],
+)
+
+py_test(
+    name = "np_box_list_test",
+    srcs = ["np_box_list_test.py"],
+    deps = [
+        ":np_box_list",
+        "//tensorflow",
+    ],
+)
+
+py_test(
+    name = "np_box_list_ops_test",
+    srcs = ["np_box_list_ops_test.py"],
+    deps = [
+        ":np_box_list",
+        ":np_box_list_ops",
+        "//tensorflow",
+    ],
+)
+
+py_test(
+    name = "np_box_ops_test",
+    srcs = ["np_box_ops_test.py"],
+    deps = [
+        ":np_box_ops",
+        "//tensorflow",
+    ],
+)
+
+py_test(
+    name = "object_detection_evaluation_test",
+    srcs = ["object_detection_evaluation_test.py"],
+    deps = [
+        ":object_detection_evaluation",
+        "//tensorflow",
+    ],
+)
+
+py_test(
+    name = "ops_test",
+    srcs = ["ops_test.py"],
+    deps = [
+        ":ops",
+        "//tensorflow",
+        "//tensorflow_models/object_detection/core:standard_fields",
+    ],
+)
+
+py_test(
+    name = "per_image_evaluation_test",
+    srcs = ["per_image_evaluation_test.py"],
+    deps = [
+        ":per_image_evaluation",
+        "//tensorflow",
+    ],
+)
+
+py_test(
+    name = "shape_utils_test",
+    srcs = ["shape_utils_test.py"],
+    deps = [
+        ":shape_utils",
+        "//tensorflow",
+    ],
+)
+
+py_test(
+    name = "static_shape_test",
+    srcs = ["static_shape_test.py"],
+    deps = [
+        ":static_shape",
+        "//tensorflow",
+    ],
+)
+
+py_test(
+    name = "test_utils_test",
+    srcs = ["test_utils_test.py"],
+    deps = [
+        ":test_utils",
+        "//tensorflow",
+    ],
+)
+
+py_test(
+    name = "variables_helper_test",
+    srcs = ["variables_helper_test.py"],
+    deps = [
+        ":variables_helper",
+        "//tensorflow",
+    ],
+)
+
+py_test(
+    name = "visualization_utils_test",
+    srcs = ["visualization_utils_test.py"],
+    deps = [
+        ":visualization_utils",
+        "//third_party/py/PIL:pil",
+    ],
+)

object_detection/utils/category_util.py

+# Copyright 2017 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.
+# ==============================================================================
+
+"""Functions for importing/exporting Object Detection categories."""
+import csv
+
+import tensorflow as tf
+
+
+def load_categories_from_csv_file(csv_path):
+  """Loads categories from a csv file.
+
+  The CSV file should have one comma delimited numeric category id and string
+  category name pair per line. For example:
+
+  0,"cat"
+  1,"dog"
+  2,"bird"
+  ...
+
+  Args:
+    csv_path: Path to the csv file to be parsed into categories.
+  Returns:
+    categories: A list of dictionaries representing all possible categories.
+                The categories will contain an integer 'id' field and a string
+                'name' field.
+  Raises:
+    ValueError: If the csv file is incorrectly formatted.
+  """
+  categories = []
+
+  with tf.gfile.Open(csv_path, 'r') as csvfile:
+    reader = csv.reader(csvfile, delimiter=',', quotechar='"')
+    for row in reader:
+      if not row:
+        continue
+
+      if len(row) != 2:
+        raise ValueError('Expected 2 fields per row in csv: %s' % ','.join(row))
+
+      category_id = int(row[0])
+      category_name = row[1]
+      categories.append({'id': category_id, 'name': category_name})
+
+  return categories
+
+
+def save_categories_to_csv_file(categories, csv_path):
+  """Saves categories to a csv file.
+
+  Args:
+    categories: A list of dictionaries representing categories to save to file.
+                Each category must contain an 'id' and 'name' field.
+    csv_path: Path to the csv file to be parsed into categories.
+  """
+  categories.sort(key=lambda x: x['id'])
+  with tf.gfile.Open(csv_path, 'w') as csvfile:
+    writer = csv.writer(csvfile, delimiter=',', quotechar='"')
+    for category in categories:
+      writer.writerow([category['id'], category['name']])

object_detection/utils/category_util_test.py

+# Copyright 2017 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.
+# ==============================================================================
+
+"""Tests for object_detection.utils.category_util."""
+import os
+
+import tensorflow as tf
+
+from object_detection.utils import category_util
+
+
+class EvalUtilTest(tf.test.TestCase):
+
+  def test_load_categories_from_csv_file(self):
+    csv_data = """
+        0,"cat"
+        1,"dog"
+        2,"bird"
+    """.strip(' ')
+    csv_path = os.path.join(self.get_temp_dir(), 'test.csv')
+    with tf.gfile.Open(csv_path, 'wb') as f:
+      f.write(csv_data)
+
+    categories = category_util.load_categories_from_csv_file(csv_path)
+    self.assertTrue({'id': 0, 'name': 'cat'} in categories)
+    self.assertTrue({'id': 1, 'name': 'dog'} in categories)
+    self.assertTrue({'id': 2, 'name': 'bird'} in categories)
+
+  def test_save_categories_to_csv_file(self):
+    categories = [
+        {'id': 0, 'name': 'cat'},
+        {'id': 1, 'name': 'dog'},
+        {'id': 2, 'name': 'bird'},
+    ]
+    csv_path = os.path.join(self.get_temp_dir(), 'test.csv')
+    category_util.save_categories_to_csv_file(categories, csv_path)
+    saved_categories = category_util.load_categories_from_csv_file(csv_path)
+    self.assertEqual(saved_categories, categories)
+
+
+if __name__ == '__main__':
+  tf.test.main()

object_detection/utils/dataset_util.py

+# Copyright 2017 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.
+# ==============================================================================
+
+"""Utility functions for creating TFRecord data sets."""
+
+import tensorflow as tf
+
+
+def int64_feature(value):
+  return tf.train.Feature(int64_list=tf.train.Int64List(value=[value]))
+
+
+def int64_list_feature(value):
+  return tf.train.Feature(int64_list=tf.train.Int64List(value=value))
+
+
+def bytes_feature(value):
+  return tf.train.Feature(bytes_list=tf.train.BytesList(value=[value]))
+
+
+def bytes_list_feature(value):
+  return tf.train.Feature(bytes_list=tf.train.BytesList(value=value))
+
+
+def float_list_feature(value):
+  return tf.train.Feature(float_list=tf.train.FloatList(value=value))
+
+
+def read_examples_list(path):
+  """Read list of training or validation examples.
+
+  The file is assumed to contain a single example per line where the first
+  token in the line is an identifier that allows us to find the image and
+  annotation xml for that example.
+
+  For example, the line:
+  xyz 3
+  would allow us to find files xyz.jpg and xyz.xml (the 3 would be ignored).
+
+  Args:
+    path: absolute path to examples list file.
+
+  Returns:
+    list of example identifiers (strings).
+  """
+  with tf.gfile.GFile(path) as fid:
+    lines = fid.readlines()
+  return [line.strip().split(' ')[0] for line in lines]
+
+
+def recursive_parse_xml_to_dict(xml):
+  """Recursively parses XML contents to python dict.
+
+  We assume that `object` tags are the only ones that can appear
+  multiple times at the same level of a tree.
+
+  Args:
+    xml: xml tree obtained by parsing XML file contents using lxml.etree
+
+  Returns:
+    Python dictionary holding XML contents.
+  """
+  if not xml:
+    return {xml.tag: xml.text}
+  result = {}
+  for child in xml:
+    child_result = recursive_parse_xml_to_dict(child)
+    if child.tag != 'object':
+      result[child.tag] = child_result[child.tag]
+    else:
+      if child.tag not in result:
+        result[child.tag] = []
+      result[child.tag].append(child_result[child.tag])
+  return {xml.tag: result}

object_detection/utils/dataset_util_test.py

+# Copyright 2017 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.
+# ==============================================================================
+
+"""Tests for object_detection.utils.dataset_util."""
+
+import os
+import tensorflow as tf
+
+from object_detection.utils import dataset_util
+
+
+class DatasetUtilTest(tf.test.TestCase):
+
+  def test_read_examples_list(self):
+    example_list_data = """example1 1\nexample2 2"""
+    example_list_path = os.path.join(self.get_temp_dir(), 'examples.txt')
+    with tf.gfile.Open(example_list_path, 'wb') as f:
+      f.write(example_list_data)
+
+    examples = dataset_util.read_examples_list(example_list_path)
+    self.assertListEqual(['example1', 'example2'], examples)
+
+
+if __name__ == '__main__':
+  tf.test.main()

object_detection/utils/label_map_util.py

+# Copyright 2017 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.
+# ==============================================================================
+
+"""Label map utility functions."""
+
+import logging
+
+import tensorflow as tf
+from google.protobuf import text_format
+from object_detection.protos import string_int_label_map_pb2
+
+
+def _validate_label_map(label_map):
+  """Checks if a label map is valid.
+
+  Args:
+    label_map: StringIntLabelMap to validate.
+
+  Raises:
+    ValueError: if label map is invalid.
+  """
+  for item in label_map.item:
+    if item.id < 1:
+      raise ValueError('Label map ids should be >= 1.')
+
+
+def create_category_index(categories):
+  """Creates dictionary of COCO compatible categories keyed by category id.
+
+  Args:
+    categories: a list of dicts, each of which has the following keys:
+      'id': (required) an integer id uniquely identifying this category.
+      'name': (required) string representing category name
+        e.g., 'cat', 'dog', 'pizza'.
+
+  Returns:
+    category_index: a dict containing the same entries as categories, but keyed
+      by the 'id' field of each category.
+  """
+  category_index = {}
+  for cat in categories:
+    category_index[cat['id']] = cat
+  return category_index
+
+
+def convert_label_map_to_categories(label_map,
+                                    max_num_classes,
+                                    use_display_name=True):
+  """Loads label map proto and returns categories list compatible with eval.
+
+  This function loads a label map and returns a list of dicts, each of which
+  has the following keys:
+    'id': (required) an integer id uniquely identifying this category.
+    'name': (required) string representing category name
+      e.g., 'cat', 'dog', 'pizza'.
+  We only allow class into the list if its id-label_id_offset is
+  between 0 (inclusive) and max_num_classes (exclusive).
+  If there are several items mapping to the same id in the label map,
+  we will only keep the first one in the categories list.
+
+  Args:
+    label_map: a StringIntLabelMapProto or None.  If None, a default categories
+      list is created with max_num_classes categories.
+    max_num_classes: maximum number of (consecutive) label indices to include.
+    use_display_name: (boolean) choose whether to load 'display_name' field
+      as category name.  If False or if the display_name field does not exist,
+      uses 'name' field as category names instead.
+  Returns:
+    categories: a list of dictionaries representing all possible categories.
+  """
+  categories = []
+  list_of_ids_already_added = []
+  if not label_map:
+    label_id_offset = 1
+    for class_id in range(max_num_classes):
+      categories.append({
+          'id': class_id + label_id_offset,
+          'name': 'category_{}'.format(class_id + label_id_offset)
+      })
+    return categories
+  for item in label_map.item:
+    if not 0 < item.id <= max_num_classes:
+      logging.info('Ignore item %d since it falls outside of requested '
+                   'label range.', item.id)
+      continue
+    if use_display_name and item.HasField('display_name'):
+      name = item.display_name
+    else:
+      name = item.name
+    if item.id not in list_of_ids_already_added:
+      list_of_ids_already_added.append(item.id)
+      categories.append({'id': item.id, 'name': name})
+  return categories
+
+
+def load_labelmap(path):
+  """Loads label map proto.
+
+  Args:
+    path: path to StringIntLabelMap proto text file.
+  Returns:
+    a StringIntLabelMapProto
+  """
+  with tf.gfile.GFile(path, 'r') as fid:
+    label_map_string = fid.read()
+    label_map = string_int_label_map_pb2.StringIntLabelMap()
+    try:
+      text_format.Merge(label_map_string, label_map)
+    except text_format.ParseError:
+      label_map.ParseFromString(label_map_string)
+  _validate_label_map(label_map)
+  return label_map
+
+
+def get_label_map_dict(label_map_path):
+  """Reads a label map and returns a dictionary of label names to id.
+
+  Args:
+    label_map_path: path to label_map.
+
+  Returns:
+    A dictionary mapping label names to id.
+  """
+  label_map = load_labelmap(label_map_path)
+  label_map_dict = {}
+  for item in label_map.item:
+    label_map_dict[item.name] = item.id
+  return label_map_dict

object_detection/utils/label_map_util_test.py

+# Copyright 2017 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.
+# ==============================================================================
+
+"""Tests for object_detection.utils.label_map_util."""
+
+import os
+import tensorflow as tf
+
+from google.protobuf import text_format
+from object_detection.protos import string_int_label_map_pb2
+from object_detection.utils import label_map_util
+
+
+class LabelMapUtilTest(tf.test.TestCase):
+
+  def _generate_label_map(self, num_classes):
+    label_map_proto = string_int_label_map_pb2.StringIntLabelMap()
+    for i in range(1, num_classes + 1):
+      item = label_map_proto.item.add()
+      item.id = i
+      item.name = 'label_' + str(i)
+      item.display_name = str(i)
+    return label_map_proto
+
+  def test_get_label_map_dict(self):
+    label_map_string = """
+      item {
+        id:2
+        name:'cat'
+      }
+      item {
+        id:1
+        name:'dog'
+      }
+    """
+    label_map_path = os.path.join(self.get_temp_dir(), 'label_map.pbtxt')
+    with tf.gfile.Open(label_map_path, 'wb') as f:
+      f.write(label_map_string)
+
+    label_map_dict = label_map_util.get_label_map_dict(label_map_path)
+    self.assertEqual(label_map_dict['dog'], 1)
+    self.assertEqual(label_map_dict['cat'], 2)
+
+  def test_load_bad_label_map(self):
+    label_map_string = """
+      item {
+        id:0
+        name:'class that should not be indexed at zero'
+      }
+      item {
+        id:2
+        name:'cat'
+      }
+      item {
+        id:1
+        name:'dog'
+      }
+    """
+    label_map_path = os.path.join(self.get_temp_dir(), 'label_map.pbtxt')
+    with tf.gfile.Open(label_map_path, 'wb') as f:
+      f.write(label_map_string)
+
+    with self.assertRaises(ValueError):
+      label_map_util.load_labelmap(label_map_path)
+
+    def test_keep_categories_with_unique_id(self):
+    label_map_proto = string_int_label_map_pb2.StringIntLabelMap()
+    label_map_string = """
+      item {
+        id:2
+        name:'cat'
+      }
+      item {
+        id:1
+        name:'child'
+      }
+      item {
+        id:1
+        name:'person'
+      }
+      item {
+        id:1
+        name:'n00007846'
+      }
+    """
+    text_format.Merge(label_map_string, label_map_proto)
+    categories = label_map_util.convert_label_map_to_categories(
+        label_map_proto, max_num_classes=3)
+    self.assertListEqual([{
+        'id': 2,
+        'name': u'cat'
+    }, {
+        'id': 1,
+        'name': u'child'
+    }], categories)
+
+  def test_convert_label_map_to_categories_no_label_map(self):
+    categories = label_map_util.convert_label_map_to_categories(
+        None, max_num_classes=3)
+    expected_categories_list = [{
+        'name': u'category_1',
+        'id': 1
+    }, {
+        'name': u'category_2',
+        'id': 2
+    }, {
+        'name': u'category_3',
+        'id': 3
+    }]
+    self.assertListEqual(expected_categories_list, categories)
+
+  def test_convert_label_map_to_coco_categories(self):
+    label_map_proto = self._generate_label_map(num_classes=4)
+    categories = label_map_util.convert_label_map_to_categories(
+        label_map_proto, max_num_classes=3)
+    expected_categories_list = [{
+        'name': u'1',
+        'id': 1
+    }, {
+        'name': u'2',
+        'id': 2
+    }, {
+        'name': u'3',
+        'id': 3
+    }]
+    self.assertListEqual(expected_categories_list, categories)
+
+  def test_convert_label_map_to_coco_categories_with_few_classes(self):
+    label_map_proto = self._generate_label_map(num_classes=4)
+    cat_no_offset = label_map_util.convert_label_map_to_categories(
+        label_map_proto, max_num_classes=2)
+    expected_categories_list = [{
+        'name': u'1',
+        'id': 1
+    }, {
+        'name': u'2',
+        'id': 2
+    }]
+    self.assertListEqual(expected_categories_list, cat_no_offset)
+
+  def test_create_category_index(self):
+    categories = [{'name': u'1', 'id': 1}, {'name': u'2', 'id': 2}]
+    category_index = label_map_util.create_category_index(categories)
+    self.assertDictEqual({
+        1: {
+            'name': u'1',
+            'id': 1
+        },
+        2: {
+            'name': u'2',
+            'id': 2
+        }
+    }, category_index)
+
+
+if __name__ == '__main__':
+  tf.test.main()