Method and apparatus for assessing the visibility of differences between two signal sequences
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United States of America Patent
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Nov 25, 2003
Grant Date -
Mar 14, 2002
app pub date -
Sep 25, 2001
filing date -
Apr 4, 1997
priority date (Note) -
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Abstract
A method and apparatus for assessing the visibility of differences between two input signal sequences, e.g., image sequences is disclosed. The apparatus comprises a perceptual metric generator having an input signal processing section, a luminance processing section, a chrominance processing section and a perceptual metric generating section. The luminance processing section simultaneously processes at least two image fields, so as to provide spatio-temporal channels whose calibration is independent of pure-spatial and pure-temporal channels.
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