| 摘要 |
PROBLEM TO BE SOLVED: To provide a rate control technique that can improve video encoding. SOLUTION: The rate control technique exploits a relationship between the number of bits encoded per frame and the number of non-zero coefficients of the video blocks after quantization. The number of non-zero coefficients of the video blocks after quantization is referred to as rho (ρ). The value ofρis generally proportional to the number of bits used in the video encoding. This disclosure utilizes a relationship betweenρand a quantization parameter (QP) in order to achieve rate controlled video encoding. More specifically, this disclosure provides a technique for generating a lookup table (LUT) that maps values ofρto different QPs. COPYRIGHT: (C)2006,JPO&NCIPI |
