Image difference detection method and apparatus

Abstract

The application provides an image difference detection method and device, the method comprising: segmenting a target original document and a to-be-detected image according to the same segmentation manner to obtain a plurality of to-be-detected sub-image blocks and a plurality of sub-original document blocks; performing deformation processing on each sub-original document block to obtain a plurality of deformed sub-original document blocks; for each sub-original document block, matching the plurality of deformed sub-original document blocks corresponding to the sub-original document block with a target to-be-detected sub-image block respectively, and selecting the deformed sub-original document block with the highest matching degree as a target sub-original document block; combining the plurality of target sub-original document blocks to obtain a recombined original document; and comparing the recombined original document with the to-be-detected image to mark shape defects and color defects on the to-be-detected image. By using the above image difference detection method and device, the problems of slow detection speed and unstable detection accuracy when manually detecting the printing effect of a printer are solved.

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