VIDEO CONFERENCE SYSTEM IMPROVEMENT OF MULTI-DISPLAY USING POLARIZATION OF LIGHT
Publication Date: 2003-Dec-03
The IP.com Prior Art Database
In future video conference systems, different polarizations of light will probably be used either to provide a so-called multiview feature (two viewers perceive each a specific point of view) or to view stereoscopic images (3D simulation). In both cases, the persons participating the video conference have to wear polarized glasses in order to take advantage of the improved display. Their eyes thus appear shadowed by about 50% to the camera capturing their side of the conference and as a consequence to the people participating the conference at the other side. In order to avoid this drawback, the invention proposes to put a polarizing panel in front of the camera with a polarization changing with each successive picture (e.g. vertical for even pictures and horizontal for odd pictures). In the picture corresponding to the polarization of a given glass, the light is not further attenuated by the glass (no shadowing of the eyes), whereas in the following picture no light goes through the same glass. By a subsequent processing (e.g. keeping the maximum values), one picture without shadowing of the eyes is obtained from the two successive pictures. No shadowing of eyes in improved video conference systems using polarizing glasses, specifically allowing the (very important) eye contact between participants.