PICTURE CORRECTING DEVICE, PICTURE CORRECTING PROGRAM AND PICTURE CORRECTING METHOD

摘要

An image correcting apparatus calculates, when an accepted processing target image is determined to be a dark image because an average brightness of an entirety of the processing target image is lower than a predetermined value, a distribution balance of a frequency of appearance of pixels by dividing a dark area indicating an area lower than the average brightness into a very dark area and a slightly dark area; determines if there is a possibility of causing a black floating phenomenon or a black defacement phenomenon based on the calculated distribution balance; determines a correction amount corresponding to the black floating phenomenon or the black defacement phenomenon when there is a possibility of causing the black floating phenomenon or the black defacement phenomenon; and corrects the processing target image by using the determined correction amount.