1. An information processor comprising: an image device arranged to capture a shot image and to transform the shot image into a plurality of depth images having different resolutions; a candidate area extraction section arranged to extract candidate areas in which a target picture is likely to exist in the shot image by performing template matching on each of the plurality of depth images using a template image, the depth images representing, on an image plane, a distance of a subject from a camera in a depth direction as a pixel value, the template image representing a shape and a size of the target to be analyzed, wherein, for each of the plurality of depth images, the template image is varied in size during template matching only within a predefined magnification range; a detailed information acquisition section arranged to analyze the candidate areas extracted by the candidate area extraction section; and an output information generation section arranged to generate output information based on results of image analysis performed by the detailed information acquisition section and output the output information.