Method of providing background patterns for camera tracking

Details Method of providing background patterns for camera tracking Method of providing background patterns for camera tracking

H - Electricity

04

N

H04N 5/272 (2006.01)

Patent

CA 2230430

An improved method of tracking a camera in dynamic chroma-keying of the type in which a foreground object is photographed against a multicolored chroma-key screen. The multicolor patterns are created by projection oii a monochrome screen, for example by projecting light through a mask on a screen colored with the chroma--key color. The projection of multiple patterns can emulate the use of a single pattern having multiple levels of detail, and can enable lateral tracking of the camera. Sequentially projecting known transformations (for example, rotations) of a pattern adds an extra degree of freedom which further enhances the accuracy of the method.

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