Method for mixing two color television signals

Details Method for mixing two color television signals Method for mixing two color television signals

1982-10-29

1985-01-29

Masinick, Michael A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

H04N 9535

Patent

active

044969660

ABSTRACT:
The invention concerns a method and apparatus for mixing a foreground signal and a background signal under the control of a switching signal which is derived as a function of the color of the foreground signal. In response to the switching signal selected parts of the foreground signal are desaturated while maintaining their luminance component substantially unchanged; non-corresponding parts of the background signal are suppressed. Both signals so treated are additively superimposed. This leads to a better representation of fine details in the contours of a foreground object of interest.

REFERENCES:
patent: 4408221 (1983-10-01), McCoy
"High Quality Montage Pictures by a New Color Killer Soft Chromakey System", vol. 90, Feb. 1981, SMPTE Journal, pp. 107, 118.

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