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Louise Deason
71 lines
2.3 KiB
Python
71 lines
2.3 KiB
Python
# Copyright 2020 DeepMind Technologies Limited.
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#
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Ucf101 with custom decoding params."""
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import tensorflow as tf
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import tensorflow_datasets as tfds
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# Utilities functions.
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tf.compat.v1.enable_eager_execution()
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_CITATION = """\
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@article{DBLP:journals/corr/abs-1212-0402,
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author = {Khurram Soomro and
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Amir Roshan Zamir and
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Mubarak Shah},
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title = {{UCF101:} {A} Dataset of 101 Human Actions Classes From Videos in
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The Wild},
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journal = {CoRR},
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volume = {abs/1212.0402},
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year = {2012},
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url = {http://arxiv.org/abs/1212.0402},
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archivePrefix = {arXiv},
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eprint = {1212.0402},
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timestamp = {Mon, 13 Aug 2018 16:47:45 +0200},
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biburl = {https://dblp.org/rec/bib/journals/corr/abs-1212-0402},
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bibsource = {dblp computer science bibliography, https://dblp.org}
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}
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"""
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_LABELS_FNAME = 'video/ucf101_labels.txt'
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class ModUcf101(tfds.video.Ucf101):
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"""Ucf101 action recognition dataset with better quality.
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"""
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def _info(self):
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ffmpeg_extra_args = ('-qscale:v', '2', '-r', '25', '-t', '00:00:20')
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video_shape = (
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None, self.builder_config.height, self.builder_config.width, 3)
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labels_names_file = tfds.core.tfds_path(_LABELS_FNAME)
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features = tfds.features.FeaturesDict({
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'video': tfds.features.Video(video_shape,
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ffmpeg_extra_args=ffmpeg_extra_args,
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encoding_format='jpeg'),
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'label': tfds.features.ClassLabel(names_file=labels_names_file),
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})
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return tfds.core.DatasetInfo(
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builder=self,
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description='A 101-label video classification dataset.',
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features=features,
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homepage='https://www.crcv.ucf.edu/data-sets/ucf101/',
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citation=_CITATION,
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)
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