H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 9/64 (2006.01) H04N 11/02 (2006.01) H04N 7/26 (2006.01)
Patent
CA 2621107
Methods, systems, and computer programs for improving compressed image chroma information. In one aspect of the invention, a resolution for a red color component of a color video image is used that is higher than the resolution for a blue color component of the color video image. Another aspect includes utilizing a lower or higher value of a quantization parameter (QP) for one or more chroma channels as compared to the luminance channel. Another aspect is use of a logarithmic representation of a video image to benefit image coding. Another aspect uses more than two chroma channels to represent a video image.
Dolby Laboratories Licensing Corporation
Smart & Biggar
LandOfFree
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