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| # coding=utf-8 | |
| # Copyright 2021 The Deeplab2 Authors. | |
| # | |
| # 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. | |
| # Lint as: python2, python3 | |
| # pylint: disable=line-too-long | |
| # pyformat: disable | |
| r"""Creates a JSON file with info for a split of Cityscapes images. | |
| This single-purpose version has special handling for the directory structure of | |
| CityScapes dataset and the expected output ids. | |
| Sample commands: | |
| python create_images_json_for_cityscapes.py \ | |
| --image_dir=${DATA_ROOT}/leftImg8bit/${IMAGES_SPLIT} \ | |
| --output_json_path=${PATH_TO_SAVE}/${IMAGES_SPLIT}_images.json \ | |
| --only_basename \ | |
| --include_image_type_suffix=false | |
| """ | |
| # pyformat: enable | |
| # pylint: enable=line-too-long | |
| from __future__ import absolute_import | |
| from __future__ import division | |
| from __future__ import print_function | |
| import json | |
| import os | |
| import re | |
| from absl import app | |
| from absl import flags | |
| import tensorflow as tf | |
| FLAGS = flags.FLAGS | |
| flags.DEFINE_string( | |
| 'image_dir', None, | |
| 'The top-level directory of image files to be included in the set.') | |
| flags.DEFINE_list( | |
| 'keep_cities', None, | |
| 'Comma-separated list of strings specifying cities to be processed.') | |
| flags.DEFINE_string('output_json_path', None, | |
| 'Output path to which is written the image info JSON.') | |
| flags.DEFINE_boolean( | |
| 'only_basename', True, | |
| 'If set, the included "file_name" properties of the images in the JSON ' | |
| 'file will only include the base name and not the city directory. Used for ' | |
| 'tools that do not support nested directories.') | |
| flags.DEFINE_boolean( | |
| 'include_image_type_suffix', True, | |
| 'If set, will include the suffix of the image type (e.g. "_leftImg8bit") ' | |
| 'in the "file_name" properties of the image.') | |
| def _create_images_json(image_dir, output_json_path, only_basename=False, | |
| include_image_type_suffix=True, keep_cities=None): | |
| """Lists the images in image_dir and writes out the info JSON for them.""" | |
| images_info_array = [] | |
| for city_dir in tf.io.gfile.listdir(image_dir): | |
| if keep_cities and city_dir not in keep_cities: | |
| continue | |
| image_id_re = r'%s_[0-9]+_[0-9]+' % city_dir | |
| image_id_re = re.compile(image_id_re) | |
| for image_basename in tf.io.gfile.listdir( | |
| os.path.join(image_dir, city_dir)): | |
| match = image_id_re.match(image_basename) | |
| image_id = image_basename[match.start():match.end()] | |
| if include_image_type_suffix: | |
| file_name = image_basename | |
| else: | |
| file_name = image_id + os.path.splitext(image_basename)[1] | |
| if not only_basename: | |
| file_name = os.path.join(city_dir, file_name) | |
| image_info_dict = {'id': image_id, 'file_name': file_name} | |
| images_info_array.append(image_info_dict) | |
| info_dict = {'images': images_info_array} | |
| with tf.io.gfile.GFile(output_json_path, 'w+') as json_file: | |
| json.dump(info_dict, json_file) | |
| def main(argv): | |
| if len(argv) > 1: | |
| raise app.UsageError('Too many command-line arguments.') | |
| keep_cities = None | |
| if FLAGS.keep_cities: | |
| keep_cities = [str(x) for x in FLAGS.keep_cities] | |
| _create_images_json( | |
| FLAGS.image_dir, | |
| FLAGS.output_json_path, | |
| only_basename=FLAGS.only_basename, | |
| include_image_type_suffix=FLAGS.include_image_type_suffix, | |
| keep_cities=keep_cities) | |
| if __name__ == '__main__': | |
| flags.mark_flags_as_required(['image_dir', 'output_json_path']) | |
| app.run(main) | |