Image analysis – Image transformation or preprocessing – Convolution
Patent
1997-09-19
1999-08-10
Boudreau, Leo H.
Image analysis
Image transformation or preprocessing
Convolution
382164, 382282, 382283, 348586, 348587, G06K 15316
Patent
active
059371048
ABSTRACT:
A method for combining a first digital image and a second background digital image, both images including pixels having color values, wherein the first digital image includes both a foreground region having foreground color values and a key color region characterized by a key color, as well as a mixed region where the pixel color values are a mixture of the foreground color value and the key color, includes determining a first control signal that indicates the relative proportions of the foreground color value and the key color for pixels in the first digital image; and segmenting the first digital image into a key color region and a non-key color region in which the non-key color region includes pixels in the first digital image that are not in the key color region. The method also includes determining a second control signal that indicates a spatial distance between the pixels in the first digital image and a boundary between the key color region and the non-key color region; and combining the first digital image and the second background digital image in response to the first and second control signals, the key color, and an illuminant color value.
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Couwenhoven Douglas W.
Henderson Todd R.
Spaulding Kevin E.
Boudreau Leo H.
Eastman Kodak Company
Owens Raymond L.
Sherali Ishrat
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