Using a region restricted cleanup signal to bridge a signal...

Details Using a region restricted cleanup signal to bridge a signal... Using a region restricted cleanup signal to bridge a signal...

2007-03-26

2011-11-22

Yenke, Brian (Department: 2422)

Television

Image signal processing circuitry specific to television

Special effects

C348S576000, C348S589000

Reexamination Certificate

active

08063991

ABSTRACT:
A visible luminance step in a background scene, caused by a signal level mismatch between a matte signal level and a blue backing signal level, is significantly reduced by a soft edge transition region that raises the blue backing signal level up to the signal level of a garbage matte by using a cleanup signal restricted to the transition region. The soft edge formed by cleanup does not make subjects transparent, and actors may enter this zone with little loss of image quality.

REFERENCES:
patent: 4344085 (1982-08-01), Vlahos
patent: 5940140 (1999-08-01), Dadourian et al.
patent: 6034739 (2000-03-01), Rohlfing et al.
patent: 6101289 (2000-08-01), Kellner
patent: 6288703 (2001-09-01), Berman et al.
patent: 2003/0086018 (2003-05-01), Berman et al.

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