Quantization based on modeling DISTORTION SPEED TRANSMISSION FOR CABAC encoder

摘要

1. A method of quantizing coefficients of a video block for a video coding process that supports adaptive binary arithmetic coding, context-based (CABAC), the method comprising: generating a plurality of sets of quantized coefficients for the video block, wherein each of the sets of quantized coefficients is defined based on assumptions that a particular one of the coefficients of the video block corresponds to the last non-zero coefficient of the video block; ! estimate a plurality of costs associated with coding unit video via CABAC, wherein the estimated value respectively based on different ones of the sets of quantized coefficients, wherein the evaluation of the set of values ​​comprises calculating the cost functions Lagrange associated with the model of the distortion rate, and wherein the cost function Lagrange determining sets of values ​​Lagrange individual coefficient associated with each of the quantized coefficients in the sets of quantized coefficients ENTOV; ! calculating a set of values ​​Lagrange individual coefficient associated with the quantized coefficients in the sets of quantized coefficients for values ​​of the quantized coefficients equal to zero value, minimum value and maximum value; and! selection of a predetermined one of the sets of quantized coefficients associated with the lowest one of values ​​where the particular value associated with the selected one of the sets of quantized coefficients defines a lowest number of bits associated with the set values. ! 2