QUANTIZATION IN VIDEO CODING

摘要

PROBLEM TO BE SOLVED: To provide an index of a scaling element used for scaling a quantizer step size.SOLUTION: A video coder determines a QP for coding transform coefficients associated with a block of video data that is indexed to a particular quantizer step size 200. The video coder determines a quantization scaling value for scaling the quantizer step size 202. The video coder applies the scaling value to the quantizer step size 204. The video coder codes transform coefficients using the scaled quantizer step size 206.