1. An image processing apparatus comprising: an input section, arranged to input a plurality of images; a segmentation section, arranged to segment the image input by said input section into objects; a setter, arranged to set an object as a search key from the objects segmented by said segmentation section; a determiner, arranged to determine, with respect to each of the plurality of images, whether the objects segmented from the image include an object corresponding to the object as the search key; and an output section, arranged to selectively output an image containing the object as the search key from the plurality of images in accordance with said determiner.