Super-Resolving Beyond Satellite Hardware Using Realistically Degraded Images. (arXiv:2103.06270v1 [eess.IV])

Modern deep Super-Resolution (SR) networks have established themselves as
valuable techniques in image reconstruction and enhancement. However, these
networks are normally trained and tested on benchmark image data that lacks the
typical image degrading noise present in real images. In this paper, we test
the feasibility of using deep SR in real remote sensing payloads by assessing
SR performance in reconstructing realistically degraded satellite images. We
demonstrate that a state-of-the-art SR technique called Enhanced Deep
Super-Resolution Network (EDSR), without domain specific pre-training, can
recover encoded pixel data on images with poor ground sampling distance,
provided the ground resolved distance is sufficient. However, this recovery
varies amongst selected geographical types. Our results indicate that custom
training has potential to further improve reconstruction of overhead imagery,
and that new satellite hardware should prioritise optical performance over
minimising pixel size as deep SR can overcome a lack of the latter but not the



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