To generate an image that enables effective suppression of the occurrence of binocular rivalry and that facilitates stereoscopic vision. A left-eye image feature point extraction unit (13b) and a right-eye image feature point extraction unit (13d) extract feature points from a left-eye image and a right-eye image, respectively. A number-of-non-corresponding-points calculation unit (13g) calculates, in a case where the feature points in one image among the left-eye image and the right-eye image, which are extracted by a left-eye image feature point extraction unit (13b) and a right-eye image feature point extraction unit (13d), are shifted a certain distance in the horizontal direction, the number of feature points in the one image that do not correspond to the feature points in the other image, for each shift distance. A disparity value adjustment unit (13h) adjusts a disparity value between the left-eye image and the right-eye image in accordance with the number calculated for each shift distance.