METHOD FOR BINARIZING SCAN IMAGE WITH GRAY-SCALE BY ERROR DIFFUSION ALGORITHM IN SHUTTLE SCAN MECHANISM

摘要

Purpose: a kind of error diffusion cruelty method of a shuttle scan image is provided to main reduction memory capacitance, when making shuttle scan image one error diffusion method of cruelty. Construction: image processor specifies the first pixel of the first scan line control block of a gray level image according to being scanned the target pixel of (300) as a current processing scan line block. The adjacent pixel of the specified pervious scan line block of image processor and the pervious pixel for handling mask (302) as one. Image processor makes target pixel binaryzation by an error diffusion method, and pixel is used in processing mask (304). Image processor processing mask (306) in calculate an error term and. Image processor disseminates the mistake of adjacent pixel to target pixel, by add the error term calculated with step 306 target pixel value and.