Nonlocality based super resolution reconstruction method and device

Abstract

The present invention relates to the field of digital image enhancement technologies, and more particularly to a non-locality-based super-resolution reconstruction method and device, so as to solve the problem of relatively low resolution of an image after non-locality-based super-resolution reconstruction in the prior art. The method in the embodiment of the present invention comprises: determining a position of a search window where a current macro-block is mapped in each of other image frames; determining a search window where the current pixel block is mapped in the each of the image frames, according to the position of the search window where the macro-block, where the pixel corresponding to the current pixel block is located, is mapped in the each of the image frames, and determining a similarity value of each determined pixel block in the determined search window relative to the current pixel block respectively; and determining an optimized central pixel value of each pixel block according to the determined similarity value. By use of the embodiments of the present invention, the resolution of an image subjected to non-locality-based super-resolution reconstruction is enhanced.