Patent ID: 7310449

Claim:
An image processing system comprising: signal input section which inputs an image signal; luminance regulating section which regulates a luminance value of an image by correcting the inputted image signal; signal output section which outputs the corrected image signal; and luminance measurement section which measures a luminance value of an image and outputting luminance information, wherein the luminance regulating section corrects the image signal to equalize luminance values in central and marginal portions of an image when the luminance value in the central portion is higher than the luminance value in the marginal portion, based on the luminance information and a correction table showing the relationship between a correction amount and a position in an image, and wherein the correction table includes data showing the correction amount based on a value obtained by dividing a differential value between a darkroom reference luminance value at a given position in an image and the minimum luminance value of the image by a differential value between the maximum and minimum luminance values of the image.