| 摘要 |
PROBLEM TO BE SOLVED: To provide improvements of the Delta-QP (dQP) coding within CABAC entropy coding, among new coding standards being developed toward increasing coding efficiency and reducing coding complexity.SOLUTION: Video coding systems or apparatus utilizing context-based adaptive binary arithmetic coding (CABAC) during encoding and/or decoding, are configured according to the invention with an enhanced binarization of non-zero Delta-QP (dQP). During binarization, the value of dQP and the sign are separately encoded using unary coding and then combined into a binary string which also contains the dQP non-zero flag. This invention capitalizes on the statistical symmetry of positive and negative values of dQP and results in saving bits and thus a higher coding efficiency. |
