Image processing system for pixel value correction

摘要

An image processing system (1) comprises: a buffer (2) for storing a target pixel that is an object of image processing and a group of pixels surrounding the target pixel, such that the pixels are aligned in horizontal and vertical directions; a maximum value detector (31) for obtaining a maximum value from pixels of the surrounding pixel group which pixels have the same color as the target pixel; a minimum value detector (32) for obtaining a minimum value from the pixels of the surrounding pixel group which pixels have the same color as the target pixel; and a subtracter (33) for subtracting a result obtained by the minimum value detector (32) from a result obtained by the maximum value detector (31).