Graphical display of chroma keyer controls

Details Graphical display of chroma keyer controls Graphical display of chroma keyer controls

1995-02-27

1997-05-06

Jankus, Almis R.

395326, G06T 1100

Patent

active

056279515

ABSTRACT:
A graphic display for chroma keyer controls presents background hue as a radial spoke of an outer chroma vector circle, with selectivity being displayed as a wedge about the radial spoke. Foreground suppression may be added to the graphic display by providing a concentric inner chroma vector circle with the foreground suppression hue being a radial spoke of the inner circle and foreground selectivity being a wedge within the inner circle about such radial spoke. That portion of the outer circle that is overlapped by the inner circle is suppressed, or rendered invisible, so that the background chroma information appears as a torus about the inner chroma vector circle.

REFERENCES:
patent: 5254977 (1993-10-01), MacDonald
patent: 5270806 (1993-12-01), Venable et al.
patent: 5313304 (1994-05-01), Chaplin

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