1. An image processing device comprising: a first image summarization section that performs a first image summarization process based on a similarity between a plurality of images to acquire a first summary image sequence; a second image summarization section that performs a second image summarization process based on a target object/scene recognition process on each image among the plurality of images to acquire a second summary image sequence; and an integration processing section that performs an integration process on the first summary image sequence and the second summary image sequence, or performs an integration process on the first image summarization process and the second image summarization process to acquire an output summary image sequence, wherein the first image summarization section selects a reference image and a determination target image from the plurality of images, calculates a coverage ratio of the determination target image by the reference image as the similarity based on deformation information about the reference image and the determination target image, and performs the first image summarization process that determines whether or not the determination target image can be deleted based on the coverage ratio.