An image-processor includes an acquiring unit and a correcting unit. The acquiring unit acquires image data and ambient light data indicating a degree of a first color temperature with respect to a second color temperature. The first color temperature represents a color temperature for a first ambient light. The second color temperature represents a color temperature for a second ambient light. A first image, which corresponds to the image data, is perceived in the first ambient light as an image having one color appearance. The first image is perceived in the second ambient light as an image having another color appearance. The correcting unit corrects the image data such that a color appearance of the first image under the first ambient light are reproduced under the second ambient light. The correcting unit corrects the image data based on the ambient light data such that an image based the corrected image data is brighter as the second color temperature is higher than the first color temperature and such that the image corresponding to the corrected image data is darker as the second color temperature is lower than the first color temperature.