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Unsplash2K dataset: 2K resolution high quality images

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Unsplash2K dataset: 2K resolution high quality images

Description

Unsplash2K is high-resolution image dataset with 2K resolution to train Super-Resolution network. Unsplash2K dataset is crawled from unsplash. Unsplash2K dataset contains 498 high-resolution images and corresponding low-resolution images which are downsampled by bicubic downsamling for x2, x4, x8 scale. Unsplash2K contains diverse contents such as animals, architectures and flowers.

Experimental Results

We used Unsplash2K dataset for NTIRE 2021 Learning Super-Resolution Challenge. When we add Unsplash2K to training data, Most metrics are slightly better for x4 and x8. We think this dataset is helpful for improving the performance of other model too.

For x4 SR,

NCSR (DF2K) NCSR (DF2K+Unsplask2K)
LPIPS 0.119 0.118
Diversity 26.72 26.79
LR-PSNR 50.75 50.88

For x8 SR,

NCSR (DF2K) NCSR (DF2K+Unsplask2K)
LPIPS 0.278 0.253
Diversity 26.8 25.7
LR-PSNR 44.55 49.97

Download

Please use this link. Unsplash2K.tar

Contact

If you have any questions about our dataset, please email to me. son1113@snu.ac.kr

Citation

If you use the Unsplah2K dataset in your research, We would appreciate for citing the following reference.

@inproceedings{kim2021noise,
  title={Noise Conditional Flow Model for Learning the Super-Resolution},
  author={Kim, Younggeun and Son, Donghee},
  booktitle={Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition Workshops},
  year={2021}
}

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