An image processing apparatus includes first and second standard-deviation calculating circuits for calculating deviations σ1 and σ2 indicating a luminance bias of each pixel forming an input image. The deviation σ1 is calculated by referring to an average luminance of first block images forming the input image, and the deviation σ2 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 σ1, and a second correction-coefficient calculating circuit adjusts a correction coefficient K2 based on the deviation σ2. 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.