Application of the projective geometry in the density mapping based on CCTV monitoring

In this paper we address a problem of automatic generation of the so-called density maps (heat maps) using video recordings acquired from surveillance CCTV systems in urban areas (CCTV - closed circuit television). Our software for density map estimation increments the accumulation table only in case of detecting a new moving object, resulting in a count of moving objects density map. We also applied an algorithm for projective transformation of image to achieve better accuracy of the moving object density maps. We analyzed the proposed solution for different angles of camera positions. Next the results were compared with the density maps calculated from the top view camera position.