A Closer Look at Blind Super-Resolution: Degradation Models, Baselines, and Performance Upper Bounds. (arXiv:2205.04910v1 [eess.IV])

Degradation models play an important role in Blind super-resolution (SR). The
classical degradation model, which mainly involves blur degradation, is too
simple to simulate real-world scenarios. The recently proposed practical
degradation model includes a full spectrum of degradation types, but only
considers complex cases that use all degradation types in the degradation
process, while ignoring many important corner cases that are common in the real
world. To address this problem, we propose a unified gated degradation model to
generate a …

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