1. A video surveillance equipment for detecting a change of an object in a monitoring area based on input images captured by an image capturing device, the equipment comprising: an area detection apparatus for detecting a second image area being stationary for a predetermined time in a first image area which is an area differing between a reference image used as a reference in image processing and the input images; a memory apparatus for storing image of the detected second image area; and an image comparison apparatus for performing comparison processing a plurality of times between the stored image and image in the second image area included in the input images.