Patent ID: 6417891
Filing Date: 2002-07-09
Classification: G06T

Abstract:
A system for performing color modification on a color, the color including a first, second and third component, each component defining a value of the color, the system comprising:a chroma lookup table having a plurality of entries, each entry corresponding to a luma value and containing chroma coefficients, the chroma coefficients defining color modifications to be applied to the components of the color, wherein, if a first luma value is received, the chroma lookup table generates output chroma coefficients at an output by accessing an entry of the lookup table corresponding to the first luma value and extracting the output coefficients from the entry; and a first matrix multiplier that receives the output chroma coefficients and at least the first and the second of the components of the color at an input and generates at least a first modified component and second modified component as output, the first matrix multiplier applying matrix multiplication to the first and second components using the output chroma coefficients as coefficients of a matrix.