Preserving Full Degradation Details for Blind Image Super-Resolution
<|reference_start|>Preserving Full Degradation Details for Blind Image Super-Resolution: The performance of image super-resolution relies heavily on the accuracy of degradation information, especially under blind settings. Due to absence of true degradation models in real-world scenarios, previous methods learn distinct representations by distinguishing different degradations in a batch. However, the most significant degradation differences may provide shortcuts for the learning of representations such that subtle difference may be discarded. In this paper, we propose an alternative to learn degradation representations through reproducing degraded low-resolution (LR) images. By guiding the degrader to reconstruct input LR images, full degradation information can be encoded into the representations. In addition, we develop an energy distance loss to facilitate the learning of the degradation representations by introducing a bounded constraint. Experiments show that our representations can extract accurate and highly robust degradation information. Moreover, evaluations on both synthetic and real images demonstrate that our ReDSR achieves state-of-the-art performance for the blind SR tasks.<|reference_end|>
@article{liu2024preserving,
    title={Preserving Full Degradation Details for Blind Image Super-Resolution},
    author={Hongda Liu and Longguang Wang and Ye Zhang and Kaiwen Xue and Shunbo
  Zhou and Yulan Guo},
    journal={arXiv preprint arXiv:2407.01299},
    year={2024},
    archivePrefix={arXiv},
    eprint={2407.01299},
    primaryClass={cs.CV}
}