1. A surveillance device comprising: a housing; a video camera associated with the housing to capture surveillance video; an image processor carried by the housing and cooperating with the video camera to remove moving objects in a foreground of the surveillance video from a background, to generate at least one silhouette image using the moving objects removed from the background, to compress the at least one silhouette image, and to generate a surveillance information packet based upon the compressed silhouette image; and a wireless transmitter associated with the image processor to transmit the surveillance information packet to a surveillance monitoring station.