Diffusion Models, Image Super-Resolution And Everything: A Survey
CoRR(2024)
摘要
Diffusion Models (DMs) represent a significant advancement in image
Super-Resolution (SR), aligning technical image quality more closely with human
preferences and expanding SR applications. DMs address critical limitations of
previous methods, enhancing overall realism and details in SR images. However,
DMs suffer from color-shifting issues, and their high computational costs call
for efficient sampling alternatives, underscoring the challenge of balancing
computational efficiency and image quality. This survey gives an overview of
DMs applied to image SR and offers a detailed analysis that underscores the
unique characteristics and methodologies within this domain, distinct from
broader existing reviews in the field. It presents a unified view of DM
fundamentals and explores research directions, including alternative input
domains, conditioning strategies, guidance, corruption spaces, and zero-shot
methods. This survey provides insights into the evolution of image SR with DMs,
addressing current trends, challenges, and future directions in this rapidly
evolving field.
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