An image processing device includes an image sequence acquisition section (101), a deformation information calculation section (104) that calculates deformation information about images, a feature area detection section (106) that performs a feature area detection process, an identicalness determination section (109) that performs an identicalness determination process on an ith feature area and an (i+1)th feature area based on the deformation information about an ith image and an (i+1)th image, and a summarization processing section (113) that performs an image summarization process, the deformation information calculation section (104) calculating the deformation information based on an ith deformation estimation target area that includes an area of the ith image other than the ith feature area, and an (i+1)th deformation estimation target area that includes an area of the (i+1)th image other than the (i+1)th feature area.
