1. An endoscopic processor comprising: a video signal input unit to which a video signal obtained by capturing an image of a subject is input; a release signal input unit to which a release signal created by a release manipulation performed by a user is input; a target area detector that is connected to the video signal input unit and that detects a target area in which an amount of characteristics is greater than a predetermined threshold with respect to each frame image in the input video signal; a zoom processor that generates an enlarged image obtained by performing zoom processing on the target area detected by the target area detector; a storage that associates the enlarged image generated by the zoom processor with a frame image from which the target area has been detected and that holds the images; and an output unit that externally outputs, from the storage, the frame image that corresponds to a timing at which the release signal was input to the release signal input unit, and the enlarged image.