| """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} |
|
|
