Image processing apparatus

摘要

An image processing apparatus includes first and second standard-deviation calculating circuits for calculating deviations &sgr;1 and &sgr;2 indicating a luminance bias of each pixel forming an input image. The deviation &sgr;1 is calculated by referring to an average luminance of first block images forming the input image, and the deviation &sgr;2 is calculated by referring to an average luminance of second block images forming the input image. A first correction-coefficient calculating circuit adjusts a correction coefficient K1 based on the deviation &sgr;1, and a second correction-coefficient calculating circuit adjusts a correction coefficient K2 based on the deviation &sgr;2. A Y correcting circuit corrects the luminance of each pixel forming the input image by referring to the correction coefficients K1 and K2. A CPU determines an input-image-attribute including presence/absence of a face image of a person so as to change adjustment characteristics of the correction coefficients K1 and K2.