Patent ID: 8311275
Filing Date: 2012-11-13
Classification: G06K,H04N

Abstract:
1. A computer-implemented method for performing selective viewing of a scene, the method comprising: continuously acquiring a live image of a real scene using a camera, a virtual polygon being defined for the real scene; identifying, in the acquired live image, an object that is moving in the real scene; determining that during a duration of the acquired live image the object moves from a first side past the virtual polygon to a second side, the determination performed by identifying that image content corresponding to at least part of the object crosses a border of the virtual polygon, as seen from the camera, as the object moves past the virtual polygon, wherein the first side is closer to the camera than the virtual polygon and the second side is behind the virtual polygon from the first side; modifying the acquired live image based on the determination so that the object is visible in the modified acquired live image only while located at one of the first and second sides; and displaying the modified acquired live image substantially in real time to a person performing surveillance of the real scene.