Internal changes for object detection

research/object_detection/README.md

@@ -29,6 +29,7 @@ https://scholar.googleusercontent.com/scholar.bib?q=info:l291WsrB-hQJ:scholar.go
 
 * Jonathan Huang, github: [jch1](https://github.com/jch1)
 * Vivek Rathod, github: [tombstone](https://github.com/tombstone)
+* Ronny Votel, github: [ronnyvotel](https://github.com/ronnyvotel)
 * Derek Chow, github: [derekjchow](https://github.com/derekjchow)
 * Chen Sun, github: [jesu9](https://github.com/jesu9)
 * Menglong Zhu, github: [dreamdragon](https://github.com/dreamdragon)
@@ -89,6 +90,16 @@ reporting an issue.
 
 ## Release information
 
+### April 2, 2018
+
+Supercharge your mobile phones with the next generation mobile object detector!
+We are adding support for MobileNet V2 with SSDLite presented in
+[MobileNetV2: Inverted Residuals and Linear Bottlenecks](https://arxiv.org/abs/1801.04381).
+This model is 35% faster than Mobilenet V1 SSD on a Google Pixel phone CPU (200ms vs. 270ms) at the same accuracy.
+Along with the model definition, we are also releasing a model checkpoint trained on the COCO dataset.
+
+<b>Thanks to contributors</b>: Menglong Zhu, Mark Sandler, Zhichao Lu, Vivek Rathod, Jonathan Huang
+
 ### February 9, 2018
 
 We now support instance segmentation!!  In this API update we support a number of instance segmentation models similar to those discussed in the [Mask R-CNN paper](https://arxiv.org/abs/1703.06870). For further details refer to

research/object_detection/builders/model_builder.py

@@ -30,6 +30,7 @@
 from object_detection.models import faster_rcnn_inception_resnet_v2_feature_extractor as frcnn_inc_res
 from object_detection.models import faster_rcnn_inception_v2_feature_extractor as frcnn_inc_v2
 from object_detection.models import faster_rcnn_nas_feature_extractor as frcnn_nas
+from object_detection.models import faster_rcnn_pnas_feature_extractor as frcnn_pnas
 from object_detection.models import faster_rcnn_resnet_v1_feature_extractor as frcnn_resnet_v1
 from object_detection.models import ssd_resnet_v1_fpn_feature_extractor as ssd_resnet_v1_fpn
 from object_detection.models.embedded_ssd_mobilenet_v1_feature_extractor import EmbeddedSSDMobileNetV1FeatureExtractor
@@ -55,6 +56,8 @@
 FASTER_RCNN_FEATURE_EXTRACTOR_CLASS_MAP = {
     'faster_rcnn_nas':
     frcnn_nas.FasterRCNNNASFeatureExtractor,
+    'faster_rcnn_pnas':
+    frcnn_pnas.FasterRCNNPNASFeatureExtractor,
     'faster_rcnn_inception_resnet_v2':
     frcnn_inc_res.FasterRCNNInceptionResnetV2FeatureExtractor,
     'faster_rcnn_inception_v2':
@@ -95,13 +98,19 @@ def build(model_config, is_training, add_summaries=True):
 
 
 def _build_ssd_feature_extractor(feature_extractor_config, is_training,
-                                 reuse_weights=None):
+                                 reuse_weights=None,
+                                 inplace_batchnorm_update=False):
   """Builds a ssd_meta_arch.SSDFeatureExtractor based on config.
 
   Args:
     feature_extractor_config: A SSDFeatureExtractor proto config from ssd.proto.
     is_training: True if this feature extractor is being built for training.
     reuse_weights: if the feature extractor should reuse weights.
+    inplace_batchnorm_update: Whether to update batch_norm inplace during
+      training. This is required for batch norm to work correctly on TPUs. When
+      this is false, user must add a control dependency on
+      tf.GraphKeys.UPDATE_OPS for train/loss op in order to update the batch
+      norm moving average parameters.
 
   Returns:
     ssd_meta_arch.SSDFeatureExtractor based on config.
@@ -126,7 +135,8 @@ def _build_ssd_feature_extractor(feature_extractor_config, is_training,
   return feature_extractor_class(is_training, depth_multiplier, min_depth,
                                  pad_to_multiple, conv_hyperparams,
                                  batch_norm_trainable, reuse_weights,
-                                 use_explicit_padding, use_depthwise)
+                                 use_explicit_padding, use_depthwise,
+                                 inplace_batchnorm_update)
 
 
 def _build_ssd_model(ssd_config, is_training, add_summaries):
@@ -140,15 +150,18 @@ def _build_ssd_model(ssd_config, is_training, add_summaries):
 
   Returns:
     SSDMetaArch based on the config.
+
   Raises:
     ValueError: If ssd_config.type is not recognized (i.e. not registered in
       model_class_map).
   """
   num_classes = ssd_config.num_classes
 
   # Feature extractor
-  feature_extractor = _build_ssd_feature_extractor(ssd_config.feature_extractor,
-                                                   is_training)
+  feature_extractor = _build_ssd_feature_extractor(
+      feature_extractor_config=ssd_config.feature_extractor,
+      is_training=is_training,
+      inplace_batchnorm_update=ssd_config.inplace_batchnorm_update)
 
   box_coder = box_coder_builder.build(ssd_config.box_coder)
   matcher = matcher_builder.build(ssd_config.matcher)
@@ -194,21 +207,29 @@ def _build_ssd_model(ssd_config, is_training, add_summaries):
 
 
 def _build_faster_rcnn_feature_extractor(
-    feature_extractor_config, is_training, reuse_weights=None):
+    feature_extractor_config, is_training, reuse_weights=None,
+    inplace_batchnorm_update=False):
   """Builds a faster_rcnn_meta_arch.FasterRCNNFeatureExtractor based on config.
 
   Args:
     feature_extractor_config: A FasterRcnnFeatureExtractor proto config from
       faster_rcnn.proto.
     is_training: True if this feature extractor is being built for training.
     reuse_weights: if the feature extractor should reuse weights.
+    inplace_batchnorm_update: Whether to update batch_norm inplace during
+      training. This is required for batch norm to work correctly on TPUs. When
+      this is false, user must add a control dependency on
+      tf.GraphKeys.UPDATE_OPS for train/loss op in order to update the batch
+      norm moving average parameters.
 
   Returns:
     faster_rcnn_meta_arch.FasterRCNNFeatureExtractor based on config.
 
   Raises:
     ValueError: On invalid feature extractor type.
   """
+  if inplace_batchnorm_update:
+    raise ValueError('inplace batchnorm updates not supported.')
   feature_type = feature_extractor_config.type
   first_stage_features_stride = (
       feature_extractor_config.first_stage_features_stride)
@@ -238,6 +259,7 @@ def _build_faster_rcnn_model(frcnn_config, is_training, add_summaries):
 
   Returns:
     FasterRCNNMetaArch based on the config.
+
   Raises:
     ValueError: If frcnn_config.type is not recognized (i.e. not registered in
       model_class_map).
@@ -246,7 +268,8 @@ def _build_faster_rcnn_model(frcnn_config, is_training, add_summaries):
   image_resizer_fn = image_resizer_builder.build(frcnn_config.image_resizer)
 
   feature_extractor = _build_faster_rcnn_feature_extractor(
-      frcnn_config.feature_extractor, is_training)
+      frcnn_config.feature_extractor, is_training,
+      frcnn_config.inplace_batchnorm_update)
 
   number_of_stages = frcnn_config.number_of_stages
   first_stage_anchor_generator = anchor_generator_builder.build(

research/object_detection/builders/model_builder_test.py

@@ -25,6 +25,7 @@
 from object_detection.models import faster_rcnn_inception_resnet_v2_feature_extractor as frcnn_inc_res
 from object_detection.models import faster_rcnn_inception_v2_feature_extractor as frcnn_inc_v2
 from object_detection.models import faster_rcnn_nas_feature_extractor as frcnn_nas
+from object_detection.models import faster_rcnn_pnas_feature_extractor as frcnn_pnas
 from object_detection.models import faster_rcnn_resnet_v1_feature_extractor as frcnn_resnet_v1
 from object_detection.models import ssd_resnet_v1_fpn_feature_extractor as ssd_resnet_v1_fpn
 from object_detection.models.embedded_ssd_mobilenet_v1_feature_extractor import EmbeddedSSDMobileNetV1FeatureExtractor
@@ -297,6 +298,7 @@ def test_create_ssd_resnet_v1_fpn_model_from_config(self):
   def test_create_ssd_mobilenet_v1_model_from_config(self):
     model_text_proto = """
       ssd {
+        inplace_batchnorm_update: true
         feature_extractor {
           type: 'ssd_mobilenet_v1'
           conv_hyperparams {
@@ -519,6 +521,7 @@ def test_create_embedded_ssd_mobilenet_v1_model_from_config(self):
   def test_create_faster_rcnn_resnet_v1_models_from_config(self):
     model_text_proto = """
       faster_rcnn {
+        inplace_batchnorm_update: true
         num_classes: 3
         image_resizer {
           keep_aspect_ratio_resizer {
@@ -726,6 +729,73 @@ def test_create_faster_rcnn_nas_model_from_config(self):
         model._feature_extractor,
         frcnn_nas.FasterRCNNNASFeatureExtractor)
 
+  def test_create_faster_rcnn_pnas_model_from_config(self):
+    model_text_proto = """
+      faster_rcnn {
+        num_classes: 3
+        image_resizer {
+          keep_aspect_ratio_resizer {
+            min_dimension: 600
+            max_dimension: 1024
+          }
+        }
+        feature_extractor {
+          type: 'faster_rcnn_pnas'
+        }
+        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 {
+          regularizer {
+            l2_regularizer {
+            }
+          }
+          initializer {
+            truncated_normal_initializer {
+            }
+          }
+        }
+        initial_crop_size: 17
+        maxpool_kernel_size: 1
+        maxpool_stride: 1
+        second_stage_box_predictor {
+          mask_rcnn_box_predictor {
+            fc_hyperparams {
+              op: FC
+              regularizer {
+                l2_regularizer {
+                }
+              }
+              initializer {
+                truncated_normal_initializer {
+                }
+              }
+            }
+          }
+        }
+        second_stage_post_processing {
+          batch_non_max_suppression {
+            score_threshold: 0.01
+            iou_threshold: 0.6
+            max_detections_per_class: 100
+            max_total_detections: 300
+          }
+          score_converter: SOFTMAX
+        }
+      }"""
+    model_proto = model_pb2.DetectionModel()
+    text_format.Merge(model_text_proto, model_proto)
+    model = model_builder.build(model_proto, is_training=True)
+    self.assertIsInstance(model, faster_rcnn_meta_arch.FasterRCNNMetaArch)
+    self.assertIsInstance(
+        model._feature_extractor,
+        frcnn_pnas.FasterRCNNPNASFeatureExtractor)
+
   def test_create_faster_rcnn_inception_resnet_v2_model_from_config(self):
     model_text_proto = """
       faster_rcnn {

research/object_detection/core/box_list_ops_test.py

@@ -17,6 +17,7 @@
 import numpy as np
 import tensorflow as tf
 from tensorflow.python.framework import errors
+from tensorflow.python.framework import ops
 
 from object_detection.core import box_list
 from object_detection.core import box_list_ops
@@ -509,9 +510,13 @@ def test_sort_by_field_invalid_inputs(self):
       with self.assertRaises(ValueError):
         box_list_ops.sort_by_field(boxes, 'misc')
 
-      with self.assertRaisesWithPredicateMatch(errors.InvalidArgumentError,
-                                               'Incorrect field size'):
-        sess.run(box_list_ops.sort_by_field(boxes, 'weights').get())
+      if ops._USE_C_API:
+        with self.assertRaises(ValueError):
+          box_list_ops.sort_by_field(boxes, 'weights')
+      else:
+        with self.assertRaisesWithPredicateMatch(errors.InvalidArgumentError,
+                                                 'Incorrect field size'):
+          sess.run(box_list_ops.sort_by_field(boxes, 'weights').get())
 
   def test_visualize_boxes_in_image(self):
     image = tf.zeros((6, 4, 3))

research/object_detection/core/preprocessor.py

@@ -2279,7 +2279,11 @@ def resize_masks_branch():
         return new_masks
 
       def reshape_masks_branch():
-        new_masks = tf.reshape(masks, [0, new_size[0], new_size[1]])
+        # The shape function will be computed for both branches of the
+        # condition, regardless of which branch is actually taken. Make sure
+        # that we don't trigger an assertion in the shape function when trying
+        # to reshape a non empty tensor into an empty one.
+        new_masks = tf.reshape(masks, [-1, new_size[0], new_size[1]])
         return new_masks
 
       masks = tf.cond(num_instances > 0, resize_masks_branch,

research/object_detection/dataset_tools/download_and_preprocess_mscoco.sh

@@ -64,7 +64,7 @@ cd ${SCRATCH_DIR}
 # Download the images.
 BASE_IMAGE_URL="http://images.cocodataset.org/zips"
 
-# TRAIN_IMAGE_FILE="train2017.zip"
+TRAIN_IMAGE_FILE="train2017.zip"
 download_and_unzip ${BASE_IMAGE_URL} ${TRAIN_IMAGE_FILE}
 TRAIN_IMAGE_DIR="${SCRATCH_DIR}/train2017"
 
@@ -91,7 +91,7 @@ download_and_unzip ${BASE_IMAGE_INFO_URL} ${IMAGE_INFO_FILE}
 
 TESTDEV_ANNOTATIONS_FILE="${SCRATCH_DIR}/annotations/image_info_test-dev2017.json"
 
-# # Build TFRecords of the image data.
+# Build TFRecords of the image data.
 cd "${CURRENT_DIR}"
 python object_detection/dataset_tools/create_coco_tf_record.py \
   --logtostderr \

research/object_detection/eval_util.py

@@ -79,7 +79,7 @@ def visualize_detection_results(result_dict,
       data corresponding to each image being evaluated.  The following keys
       are required:
         'original_image': a numpy array representing the image with shape
-          [1, height, width, 3]
+          [1, height, width, 3] or [1, height, width, 1]
         'detection_boxes': a numpy array of shape [N, 4]
         'detection_scores': a numpy array of shape [N]
         'detection_classes': a numpy array of shape [N]
@@ -133,6 +133,8 @@ def visualize_detection_results(result_dict,
   category_index = label_map_util.create_category_index(categories)
 
   image = np.squeeze(result_dict[input_fields.original_image], axis=0)
+  if image.shape[2] == 1:  # If one channel image, repeat in RGB.
+    image = np.tile(image, [1, 1, 3])
   detection_boxes = result_dict[detection_fields.detection_boxes]
   detection_scores = result_dict[detection_fields.detection_scores]
   detection_classes = np.int32((result_dict[

research/object_detection/evaluator.py

@@ -94,14 +94,24 @@ def _extract_predictions_and_losses(model,
     if fields.InputDataFields.groundtruth_group_of in input_dict:
       groundtruth[fields.InputDataFields.groundtruth_group_of] = (
           input_dict[fields.InputDataFields.groundtruth_group_of])
+    groundtruth_masks_list = None
     if fields.DetectionResultFields.detection_masks in detections:
       groundtruth[fields.InputDataFields.groundtruth_instance_masks] = (
           input_dict[fields.InputDataFields.groundtruth_instance_masks])
+      groundtruth_masks_list = [
+          input_dict[fields.InputDataFields.groundtruth_instance_masks]]
+    groundtruth_keypoints_list = None
+    if fields.DetectionResultFields.detection_keypoints in detections:
+      groundtruth[fields.InputDataFields.groundtruth_keypoints] = (
+          input_dict[fields.InputDataFields.groundtruth_keypoints])
+      groundtruth_keypoints_list = [
+          input_dict[fields.InputDataFields.groundtruth_keypoints]]
     label_id_offset = 1
     model.provide_groundtruth(
         [input_dict[fields.InputDataFields.groundtruth_boxes]],
         [tf.one_hot(input_dict[fields.InputDataFields.groundtruth_classes]
-                    - label_id_offset, depth=model.num_classes)])
+                    - label_id_offset, depth=model.num_classes)],
+        groundtruth_masks_list, groundtruth_keypoints_list)
     losses_dict.update(model.loss(prediction_dict, true_image_shapes))
 
   result_dict = eval_util.result_dict_for_single_example(
@@ -205,7 +215,7 @@ def _process_batch(tensor_dict, sess, batch_index, counters,
     except tf.errors.InvalidArgumentError:
       logging.info('Skipping image')
       counters['skipped'] += 1
-      return {}
+      return {}, {}
     global_step = tf.train.global_step(sess, tf.train.get_global_step())
     if batch_index < eval_config.num_visualizations:
       tag = 'image-{}'.format(batch_index)

research/object_detection/g3doc/detection_model_zoo.md

@@ -19,7 +19,9 @@ In the table below, we list each such pre-trained model including:
   aware that these timings depend highly on one's specific hardware
   configuration (these timings were performed using an Nvidia
   GeForce GTX TITAN X card) and should be treated more as relative timings in
-  many cases.
+  many cases. Also note that desktop GPU timing does not always reflect mobile
+  run time. For example Mobilenet V2 is faster on mobile devices than Mobilenet
+  V1, but is slightly slower on desktop GPU.
 * detector performance on subset of the COCO validation set or Open Images test split as measured by the dataset-specific mAP measure.
   Here, higher is better, and we only report bounding box mAP rounded to the
   nearest integer.
@@ -68,6 +70,7 @@ Some remarks on frozen inference graphs:
 | Model name  | Speed (ms) | COCO mAP[^1] | Outputs |
 | ------------ | :--------------: | :--------------: | :-------------: |
 | [ssd_mobilenet_v1_coco](http://download.tensorflow.org/models/object_detection/ssd_mobilenet_v1_coco_2017_11_17.tar.gz) | 30 | 21 | Boxes |
+| [ssd_mobilenet_v2_coco](http://download.tensorflow.org/models/object_detection/ssd_mobilenet_v2_coco_2018_03_29.tar.gz) | 31 | 22 | Boxes |
 | [ssd_inception_v2_coco](http://download.tensorflow.org/models/object_detection/ssd_inception_v2_coco_2017_11_17.tar.gz) | 42 | 24 | Boxes |
 | [faster_rcnn_inception_v2_coco](http://download.tensorflow.org/models/object_detection/faster_rcnn_inception_v2_coco_2018_01_28.tar.gz) | 58 | 28 | Boxes |
 | [faster_rcnn_resnet50_coco](http://download.tensorflow.org/models/object_detection/faster_rcnn_resnet50_coco_2018_01_28.tar.gz) | 89 | 30 | Boxes |

research/object_detection/g3doc/running_pets.md

@@ -37,7 +37,7 @@ environment variable below:
 export YOUR_GCS_BUCKET=${YOUR_GCS_BUCKET}
 ```
 
-It is also possible to run locally by following 
+It is also possible to run locally by following
 [the running locally instructions](running_locally.md).
 
 ## Installing Tensorflow and the Tensorflow Object Detection API