An image processing apparatus includes: an assumed deteriorated image pixel value computing unit configured to calculate a pixel value of an assumed deteriorated image, wherein deterioration of a target image configured of multiple channels is assumed, for each of the channels as an assumed deteriorated image pixel value; a pseudo target image pixel value computing unit configured to calculate, regarding a pixel of interest that is a pixel of the target image corresponding to the assumed deteriorated image, a pixel value estimated for each of the channels as a pseudo target image pixel value for each of the channels based on the pixel values of the pixel of interest, and pixels adjacent thereto; and a restored image creating unit configured to create a restored image restored from the target image based on the calculated assumed deteriorated image pixel value and the calculated pseudo target image pixel value.