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| # 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. | |
| # ============================================================================== | |
| """A function to build an object detection box coder from configuration.""" | |
| from object_detection.box_coders import faster_rcnn_box_coder | |
| from object_detection.box_coders import keypoint_box_coder | |
| from object_detection.box_coders import mean_stddev_box_coder | |
| from object_detection.box_coders import square_box_coder | |
| from object_detection.protos import box_coder_pb2 | |
| def build(box_coder_config): | |
| """Builds a box coder object based on the box coder config. | |
| Args: | |
| box_coder_config: A box_coder.proto object containing the config for the | |
| desired box coder. | |
| Returns: | |
| BoxCoder based on the config. | |
| Raises: | |
| ValueError: On empty box coder proto. | |
| """ | |
| if not isinstance(box_coder_config, box_coder_pb2.BoxCoder): | |
| raise ValueError('box_coder_config not of type box_coder_pb2.BoxCoder.') | |
| if box_coder_config.WhichOneof('box_coder_oneof') == 'faster_rcnn_box_coder': | |
| return faster_rcnn_box_coder.FasterRcnnBoxCoder(scale_factors=[ | |
| box_coder_config.faster_rcnn_box_coder.y_scale, | |
| box_coder_config.faster_rcnn_box_coder.x_scale, | |
| box_coder_config.faster_rcnn_box_coder.height_scale, | |
| box_coder_config.faster_rcnn_box_coder.width_scale | |
| ]) | |
| if box_coder_config.WhichOneof('box_coder_oneof') == 'keypoint_box_coder': | |
| return keypoint_box_coder.KeypointBoxCoder( | |
| box_coder_config.keypoint_box_coder.num_keypoints, | |
| scale_factors=[ | |
| box_coder_config.keypoint_box_coder.y_scale, | |
| box_coder_config.keypoint_box_coder.x_scale, | |
| box_coder_config.keypoint_box_coder.height_scale, | |
| box_coder_config.keypoint_box_coder.width_scale | |
| ]) | |
| if (box_coder_config.WhichOneof('box_coder_oneof') == | |
| 'mean_stddev_box_coder'): | |
| return mean_stddev_box_coder.MeanStddevBoxCoder( | |
| stddev=box_coder_config.mean_stddev_box_coder.stddev) | |
| if box_coder_config.WhichOneof('box_coder_oneof') == 'square_box_coder': | |
| return square_box_coder.SquareBoxCoder(scale_factors=[ | |
| box_coder_config.square_box_coder.y_scale, | |
| box_coder_config.square_box_coder.x_scale, | |
| box_coder_config.square_box_coder.length_scale | |
| ]) | |
| raise ValueError('Empty box coder.') | |