Highlights

1. Support RealBasicVSR
2. Support Real-ESRGAN checkpoint

New Features

• Support video input and output in restoration demo (#622)
• Support RealBasicVSR (#632, #633, #647, #680)
• Support Real-ESRGAN checkpoint (#635)
• Support conversion to y-channel when loading images (643)
• Support random video compression during training (#646)
• Support crop sequence (#648)
• Support pixel_unshuffle (#684)

Bug Fixes

• Change 'target_size' for RandomResize from list to tuple (#617)
• Fix folder creation in preprocess_df2k_ost_dataset.py (#623)
• Change TDAN config path in README (#625)
• Change 'radius' to 'kernel_size' for UnsharpMasking in Real-ESRNet config (#626)
• Fix bug in MATLABLikeResize (#630)
• Fix 'flow_warp' comment (#655)
• Fix the error of Model Zoo and Datasets in docs (#664)
• Fix bug in 'random_degradations' (#673)
• Limit opencv-python version (#689)

Improvements

• Translate docs to Chinese (#576, #577, #578, #579, #581, #582, #584, #587, #588, #589, #590, #591, #592, #593, #594, #595, #596, #641, #647, #656, #665, #666)
• Add UNetDiscriminatorWithSpectralNorm (#605)
• Use PyTorch sphinx theme (#607, #608)
• Update mmcv (#609), mmflow (#621), mmfewshot (#634) and mmhuman3d (#649) in docs
• Convert minimum GCC version to 5.4 (#612)
• Add tiff in SRDataset IMG_EXTENSIONS (#614)
• Update metafile and update_model_index.py (#615)
• Update preprocess_df2k_ost_dataset.py (#624)
• Add Abstract to README (#628, #636)
• Align NIQE to MATLAB results (#631)
• Add official markdown lint hook (#639)
• Skip CI when some specific files were changed (#640)
• Update docs/conf.py (#644, #651)
• Try to create a symbolic link on windows (#645)
• Cancel previous runs that are not completed (#650)
• Update path of configs in demo.md and getting_started.md (#658, #659)
• Use mmcv root model registry (#660)
• Update README.md (#654, #663)
• Refactor the structure of documentation (#668)
• Add script to crop REDS images into sub-images for faster IO (#669)
• Capitalize the first letter of the task name in the metafile (#678)
• Update FixedCrop for cropping image sequence (#682)

Contributors @wangruohui @nbei @ckkelvinchan @Yshuo-Li @LeoXing1996 @RangiLyu @matrixgame2018 @huoshuai-dot @innerlee @okotaku @Adenialzz @kai422