Patent ID: 6438508
Filing Date: 2002-08-20
Classification: H04N

Abstract:
A virtual studio positioning system comprising:a chroma-key background panel, a television camera situated in a defined front studio area in front of the chroma-key background panel for imaging a foreground object in front of the chroma-key background panel, at least one fixed mounted detection unit, said at least one fixed mounted detection unit having a field of view to cover the defined front studio area, an emitting device mounted in a fixed relationship with respect to the television camera or foreground object, said at least one fixed mounted detection unit receiving emissions from said emitting device and producing a detection output signal, a processor for processing the detection output signal of the at least one fixed mounted detection unit to provide at least x and y co-ordinates for the television camera or foreground object in relation to a position thereof in the defined front studio area, and a defined structure of at least three light emitting diodes (LEDs) positioned in a fixed relationship with respect to the television camera to enable calculation of camera parameters x, y, z, pan, tilt and roll by said processor in response to detection of the light emitted by said at least three LEDs.