Image analysis – Image compression or coding – Including details of decompression
Reexamination Certificate
2006-12-05
2006-12-05
Couso, Yon J. (Department: 2624)
Image analysis
Image compression or coding
Including details of decompression
C382S166000
Reexamination Certificate
active
07146055
ABSTRACT:
An image processing apparatus and method includes a sub-sampler decompression unit that takes an inverse transformation to rebuild 411 sub sampled luminance/chrominance color space components which are than transformed into full resolution luminance/chrominance color space pixel data. The luminance/chrominance color space pixel data is then separated into individual luminosity and chromaticity components which are scaled. A scaling unit responsive to the sub-sampler decompression unit applies different processing algorithms to the various ones of the luminance and chrominance components to scale the main luminosity component utilizing a spacial algorithm while simultaneously scaling the minor chromaticity components utilizing a perceptual algorithm. The scaled full resolution luminance and chrominance color space components are then converted into RGB color space for display purposes.
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Couso Yon J.
Hewlett--Packard Development Company, L.P.
Potts Jerry
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