1. An image processing apparatus, comprising; an original image recording section, for recording original images; a region of interest extracting section, for extracting regions of interest from within the original images, by obtaining the degree by which the features of portions within the original images differ from the features of surrounding portions, based on the colors of the original images, brightnesses of the original images, and the orientations of linear components that appear in the original images; a partial image generating section, for generating partial images by cutting out images of predetermined sizes that include the regions of interest, which are extracted by the region of interest extracting section, from the original images; and a display section, for displaying the partial images, which are generated by the partial image generating section.