Method and system for chroma key masking
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United States of America Patent
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Nov 11, 2008
Grant Date -
Mar 2, 2006
app pub date -
Oct 25, 2005
filing date -
Mar 12, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for chroma key masking is provided. The method includes adjusting a first parameter representing a size of a first ellipsoid in a color space, adjusting a second parameter representing a size of a second ellipsoid in the color space, and generating a mask value for a given pixel color based on the location of the given pixel color in the color space, relative to the first and second ellipsoids. The first ellipsoid is centered about a prescribed chroma key color and the second ellipsoid is also centered about the prescribed chroma key color. The second ellipsoid surrounds the first ellipsoid in the color space.
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