Patent ID: 6122400
Filing Date: 2000-09-19
Classification: G06T,H04N

Abstract:
Method for controlling compression coding of a video signal, comprising the steps of:extracting, from at least selected portions of said video signal, colormetric information;determining if said colormetric information is within a first colormetric range; andin response to said colormetric information being within a first colormetric range, increasing a bit allocation to said selected portions of said video signal associated with said first colormetric range, wherein said step of extracting comprises the steps of:converting, from rectangular coordinate representations to polar coordinate representations, first and second chrominance components of said video signal;comparing said converted first chrominance component of said video signal to a first range having a first upper threshold level and a first lower threshold level; andcomparing said converted second chrominance component of said video signal to a second range having a second upper threshold level and a second lower threshold level.