1. An image processing device comprising a predicted motion vector generation unit which generates a predicted motion vector of a disparity vector which represents a disparity of a target block of an operation target of a color image of a second viewpoint different from a first viewpoint with respect to a color image of the first viewpoint, from a depth image of the second viewpoint which comprises depth information related to a disparity of each pixel of the color image of the second viewpoint as a pixel value according to a depth information use prediction standard.