1. An image processing system comprising: a decoder configured to decode an input image signal obtained by encoding a plurality of images viewed from a plurality of viewing points different from each other, to generate a first image signal corresponding to a first image viewed from a first viewing point, a second image signal corresponding to a second image viewed from a second viewing point different from the first viewing point, and a motion vector for referring to the first image from the second image; a corresponding area detector configured to detect a corresponding area in the second image, based on the first image signal, the second image signal, and the motion vector, wherein the corresponding area in the second image corresponds to a target block in the first image, a corresponding vector indicating the corresponding area of a block around the target block, and to calculate a search center vector for the target block indicative of a search center of an area over which the corresponding area is searched; and an image corrector configured to mix each pixel in the target block with each pixel in the corresponding area according to a degree of similarity between the target block and the corresponding area, to generate a third image signal.