Device and method for processing a signal with a subject moving

Details Device and method for processing a signal with a subject moving Device and method for processing a signal with a subject moving

1996-11-25

1999-07-13

Peng, John K.

Television

Image signal processing circuitry specific to television

Special effects

348586, 348588, 348589, 348578, 345118, 345150, 345168, 358537, 358538, 358540, 358 22CK, 382284, H04N 975

Patent

active

059233818

ABSTRACT:
A device and method that overlays, onto a new colored background a subject clipped from a source video image having a subject moving against a first colored background. A clipping key KD is calculated which makes it possible to separate the color space representing the image into three regions, a first region defining a volume representing the first colored background, a second region defining a volume representing the subject, and a third region representing a region of transition between the first colored background and the subject. A video image VD representing the subject moving against the new colored background formed according to the formula:

REFERENCES:
patent: 5003491 (1991-03-01), Heckt
patent: 5051828 (1991-09-01), Chaplin
patent: 5117283 (1992-05-01), Kroos
patent: 5202762 (1993-04-01), Fellinger
patent: 5574511 (1996-11-01), Yang
patent: 5657395 (1997-08-01), Hirota
Digital Chroma-Key, by V. G. Devereux, BBC Research Department, UK, Sep. 21-25, 1984, International Broadcasting Convention, pp. 148-152.
Signal Processing for a Digital HDTV Chromakey Mixer, Frank Fechter and Christof Ricken, Technical University of Braunschweig, Germany, Feb. 25, 1993, pp. 417-423.
Chromakey in Future Studio Systems, R. Rawlings and N. Seth-Smith, IBA Technical Review, Mar., 1982, pp. 57-69.

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