视频会议室灯光设计.pdfVIP

视频会议室灯光设计 The new Design Guide from IESNA is the closest thing pro AV has to an international standard for videoconferencing lighting design. Source: PRO AV Magazine Publication date: December 1, 2005 By Tim Cape, CTS-D While the ultimate goal in videoconferencing is good interactivity between near- and far-end rooms, one common lighting design problem can be summed up in a question thats remained constant throughout the evolution of videoconferencing technology: How can you provide good, comfortable lighting to optimize the camera and video codec operation in an architectural environment rather than in a studio? Although its a fairly simple question, the answer can be quite complicated. There must be some light in the room of the space youre designing just for the camera to produce an image, but making that image look good while maintaining a good projected video image can be easier said than done. On top of just getting the camera to produce a decent image, you also have to be concerned about what the codec will do to that image (particularly at low bit rates), putting more constraints on not just the lighting design but also the interior design of the room itself — once again going beyond the tenets of a basic AV system. Up until now, AV professionals havent had much consistent guidance on videoconferencin room lighting design, but the new design guide, offered by the Illuminating Engineering Society of North America (IESNA), gives them an authoritative place to start. The new design guide The Guide is intended to some extent for designers both with and without a background in lighting design. The old design problem Before answering the question presented above about how to optimize the camera and video codec operation in an architectural environment, you must understand several basic and sometimes conflicting requirements. And its not just about the luminaires that emit the light, its about the room, to