Video merging employing pattern-key insertion

Details Video merging employing pattern-key insertion Video merging employing pattern-key insertion

H - Electricity

04

N

H04N 5/275 (2006.01) H04N 5/272 (2006.01)

Patent

CA 2119272

Disclosed is a technique for deriving a composite video image by merging foreground and background video image data supplied from a plurality of separate video signal sources employing pattern-key insertion, rather than prior-art color-key insertion, for this purpose. Pattern-key insertion involves replacing a first pattern (202) in a video scene (204A) with a second pattern (204B). This is accomplished by first detecting the first pattern (202) in the video scene and estimating the pose of this detected first pattern with respect to a reference object in the video scene. The second pattern is then geometrical- ly transformed using the pose estimate of the detected first pattern. Finally, the detected first pattern is replaced with the geometrically-transformed second pattern.

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