Patent ID: 7376277
Filing Date: 2008-05-20
Classification: H04N

Abstract:
1. A method of processing luminance information corresponding to a luminance component of an image and first chrominance information corresponding to a first chrominance component of said image, the method comprising: performing a spatial transform operation to generate from said first chrominance information a first set of chrominance coefficients corresponding to said first portion of said image; and performing a first forward transform operation on chrominance coefficients included in said first set of chrominance coefficients using a set of chrominance transform control coefficients which are a function of said luminance information to control the first forward transform operation, said first forward transform operation generating at most one output chrominance coefficient for each input chrominance coefficient, a set of output chrominance coefficients generated by said first forward transform operation forming a second set of chrominance coefficients corresponding to the same portion of said image as said first set of chrominance coefficients.