A coverage area picture imaging a maximum area is displayed on a coverage area picture display. A camera is moved within a predetermined range and a plurality of frames obtained as a result form a picture. The pixels of the picture is decimated in vertical and horizontal directions and form a thumbnail...http://www.google.ca/patents/US7218352?utm_source=gb-gplus-sharePatent US7218352 - Monitoring system for a photography unit, monitoring method, computer program, and storage medium