| """Kodak. | |
| Copyright 2020 The HuggingFace Datasets Authors and the current dataset script contributor. | |
| 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. | |
| """ | |
| import datasets | |
| NUMBER = 24 | |
| _DESCRIPTION = """\ | |
| The pictures below link to lossless, true color (24 bits per pixel, aka "full | |
| color") images. It is my understanding they have been released by the Eastman | |
| Kodak Company for unrestricted usage. Many sites use them as a standard test | |
| suite for compression testing, etc. Prior to this site, they were only | |
| available in the Sun Raster format via ftp. This meant that the images could | |
| not be previewed before downloading. Since their release, however, the lossless | |
| PNG format has been incorporated into all the major browsers. Since PNG | |
| supports 24-bit lossless color (which GIF and JPEG do not), it is now possible | |
| to offer this browser-friendly access to the images. | |
| """ | |
| _HOMEPAGE = "https://r0k.us/graphics/kodak/" | |
| _LICENSE = "GPLv3" | |
| _URLS = [ | |
| f"https://github.com/MohamedBakrAli/Kodak-Lossless-True-Color-Image-Suite/raw/master/PhotoCD_PCD0992/{i}.png" | |
| for i in range(1, 1 + NUMBER) | |
| ] | |
| class Kodak(datasets.GeneratorBasedBuilder): | |
| """Kodak datasets.""" | |
| VERSION = datasets.Version("0.0.1") | |
| def _info(self): | |
| features = datasets.Features( | |
| { | |
| "image": datasets.Image(), | |
| } | |
| ) | |
| return datasets.DatasetInfo( | |
| description=_DESCRIPTION, | |
| features=features, | |
| homepage=_HOMEPAGE, | |
| license=_LICENSE, | |
| ) | |
| def _split_generators(self, dl_manager): | |
| """Return SplitGenerators.""" | |
| file_paths = dl_manager.download_and_extract(_URLS) | |
| return [ | |
| datasets.SplitGenerator( | |
| name=datasets.Split.TEST, | |
| gen_kwargs={ | |
| "file_paths": file_paths, | |
| }, | |
| ), | |
| ] | |
| def _generate_examples(self, file_paths): | |
| """Yield examples.""" | |
| for file_path in file_paths: | |
| yield file_path, {"image": file_path} | |