An image processing device includes: a component separating unit; a distribution modifying unit; and a component combining unit. The component separating unit separates an image, which is represented by image data obtained by imaging a scene, into component images for a plurality of color components. The distribution modifying unit sets one of the component images for a predetermined color component as a reference component image, sets at least one component image other than the reference component image as at least one non-reference component image, and modifies distribution of pixels for brightness levels in each non-reference component image based on distribution of pixels for brightness levels in the reference component image. The component combining unit combines together the reference component image and the at least one non-reference component image modified by the distribution modifying unit.