Datasets:
Tasks:
Other
Multilinguality:
monolingual
Size Categories:
unknown
Language Creators:
found
Annotations Creators:
machine-generated
Source Datasets:
original
License:
# coding=utf-8 | |
# 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. | |
"""DIV2K dataset: DIVerse 2K resolution high quality images. | |
Adapted from TF Datasets: https://github.com/tensorflow/datasets/""" | |
import os | |
from pathlib import Path | |
import datasets | |
_CITATION = """ | |
@InProceedings{Agustsson_2017_CVPR_Workshops, | |
author = {Agustsson, Eirikur and Timofte, Radu}, | |
title = {NTIRE 2017 Challenge on Single Image Super-Resolution: Dataset and Study}, | |
booktitle = {The IEEE Conference on Computer Vision and Pattern Recognition (CVPR) Workshops}, | |
url = "http://www.vision.ee.ethz.ch/~timofter/publications/Agustsson-CVPRW-2017.pdf", | |
month = {July}, | |
year = {2017} | |
} | |
""" | |
_DESCRIPTION = """ | |
DIV2K dataset: DIVerse 2K resolution high quality images as used for the challenges @ NTIRE (CVPR 2017 and | |
CVPR 2018) and @ PIRM (ECCV 2018) | |
""" | |
_HOMEPAGE = "https://data.vision.ee.ethz.ch/cvl/DIV2K/" | |
_LICENSE = """ | |
Please notice that this dataset is made available for academic research purpose only. All the images are | |
collected from the Internet, and the copyright belongs to the original owners. If any of the images belongs to | |
you and you would like it removed, please kindly inform the authors, and they will remove it from the dataset | |
immediately. | |
""" | |
_DL_URL = "https://data.vision.ee.ethz.ch/cvl/DIV2K/" | |
_DL_URLS = { | |
"train_hr": _DL_URL + "DIV2K_train_HR.zip", | |
"valid_hr": _DL_URL + "DIV2K_valid_HR.zip", | |
"train_bicubic_x2": _DL_URL + "DIV2K_train_LR_bicubic_X2.zip", | |
"train_unknown_x2": _DL_URL + "DIV2K_train_LR_unknown_X2.zip", | |
"valid_bicubic_x2": _DL_URL + "DIV2K_valid_LR_bicubic_X2.zip", | |
"valid_unknown_x2": _DL_URL + "DIV2K_valid_LR_unknown_X2.zip", | |
"train_bicubic_x3": _DL_URL + "DIV2K_train_LR_bicubic_X3.zip", | |
"train_unknown_x3": _DL_URL + "DIV2K_train_LR_unknown_X3.zip", | |
"valid_bicubic_x3": _DL_URL + "DIV2K_valid_LR_bicubic_X3.zip", | |
"valid_unknown_x3": _DL_URL + "DIV2K_valid_LR_unknown_X3.zip", | |
"train_bicubic_x4": _DL_URL + "DIV2K_train_LR_bicubic_X4.zip", | |
"train_unknown_x4": _DL_URL + "DIV2K_train_LR_unknown_X4.zip", | |
"valid_bicubic_x4": _DL_URL + "DIV2K_valid_LR_bicubic_X4.zip", | |
"valid_unknown_x4": _DL_URL + "DIV2K_valid_LR_unknown_X4.zip", | |
"train_bicubic_x8": _DL_URL + "DIV2K_train_LR_x8.zip", | |
"valid_bicubic_x8": _DL_URL + "DIV2K_valid_LR_x8.zip", | |
"train_realistic_mild_x4": _DL_URL + "DIV2K_train_LR_mild.zip", | |
"valid_realistic_mild_x4": _DL_URL + "DIV2K_valid_LR_mild.zip", | |
"train_realistic_difficult_x4": _DL_URL + "DIV2K_train_LR_difficult.zip", | |
"valid_realistic_difficult_x4": _DL_URL + "DIV2K_valid_LR_difficult.zip", | |
"train_realistic_wild_x4": _DL_URL + "DIV2K_train_LR_wild.zip", | |
"valid_realistic_wild_x4": _DL_URL + "DIV2K_valid_LR_wild.zip", | |
} | |
_DATA_OPTIONS = [ | |
"bicubic_x2", "bicubic_x3", "bicubic_x4", "bicubic_x8", "unknown_x2", | |
"unknown_x3", "unknown_x4", "realistic_mild_x4", "realistic_difficult_x4", | |
"realistic_wild_x4" | |
] | |
class Div2kConfig(datasets.BuilderConfig): | |
"""BuilderConfig for Div2k.""" | |
def __init__(self, name, **kwargs): | |
"""Constructs a Div2kConfig.""" | |
if name not in _DATA_OPTIONS: | |
raise ValueError("data must be one of %s" % _DATA_OPTIONS) | |
super(Div2kConfig, self).__init__(name=name, **kwargs) | |
self.data = name | |
self.download_urls = { | |
"train_lr_url": _DL_URLS["train_" + self.data], | |
"valid_lr_url": _DL_URLS["valid_" + self.data], | |
"train_hr_url": _DL_URLS["train_hr"], | |
"valid_hr_url": _DL_URLS["valid_hr"], | |
} | |
class Div2k(datasets.GeneratorBasedBuilder): | |
"""DIV2K dataset: DIVerse 2K resolution high quality images.""" | |
BUILDER_CONFIGS = [ | |
Div2kConfig(version=datasets.Version("2.0.0"), name=data) for data in _DATA_OPTIONS | |
] | |
DEFAULT_CONFIG_NAME = "bicubic_x2" | |
def _info(self): | |
features = datasets.Features( | |
{ | |
"lr": datasets.Value("string"), | |
"hr": datasets.Value("string"), | |
} | |
) | |
return datasets.DatasetInfo( | |
description=_DESCRIPTION, | |
features=features, | |
supervised_keys=None, | |
homepage=_HOMEPAGE, | |
license=_LICENSE, | |
citation=_CITATION, | |
) | |
def _split_generators(self, dl_manager): | |
"""Returns SplitGenerators.""" | |
extracted_paths = dl_manager.download_and_extract( | |
self.config.download_urls) | |
return [ | |
datasets.SplitGenerator( | |
name=datasets.Split.TRAIN, | |
gen_kwargs={ | |
"lr_path": extracted_paths["train_lr_url"], | |
"hr_path": os.path.join(extracted_paths["train_hr_url"], "DIV2K_train_HR"), | |
}, | |
), | |
datasets.SplitGenerator( | |
name=datasets.Split.VALIDATION, | |
gen_kwargs={ | |
"lr_path": extracted_paths["valid_lr_url"], | |
"hr_path": str(os.path.join(extracted_paths["valid_hr_url"], "DIV2K_valid_HR")), | |
}, | |
), | |
] | |
def _generate_examples( | |
self, lr_path, hr_path | |
): | |
""" Yields examples as (key, example) tuples. """ | |
extensions = {'.png'} | |
for file_path in sorted(Path(lr_path).glob("**/*")): | |
if file_path.suffix in extensions: | |
file_path_str = str(file_path.as_posix()) | |
yield file_path_str, { | |
"lr": file_path_str, | |
"hr": str((Path(hr_path) / f"{str(file_path.name)[:4]}.png").as_posix()) | |
} | |