The LSPatch modules developed in 2021 have demonstrated significant advancements in image restoration tasks. The improved LSPatch algorithms, deep learning-based LSPatch modules, and application-specific LSPatch modules have shown improved restoration quality, efficiency, and applicability. This paper provides a comprehensive review of these modules, highlighting their key features, advantages, and limitations. Future research directions include the development of more efficient and robust LSPatch algorithms, as well as the integration of LSPatch with other image processing techniques.