| 摘要 |
<p>Methods, systems, and computer programs for improving compressed image chrom a 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 o r 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 .</p> |
