Rate-Distortion Optimization of Rate Control for H.264 With Adaptive Initial Quantization Parameter Determination

Hanli Wang, Sam Kwong
2008 IEEE transactions on circuits and systems for video technology (Print)  
A rate-distortion (R-D) optimization rate control (RC) algorithm with adaptive initialization is presented for H.264. First, a linear distortion-quantization (D-Q) model is introduced and thus a close-form solution is developed to derive optimal quantization parameters ( ) for encoding each macroblock. Then we exploit to determine the initial efficiently and adaptively according to the content of video sequences. The experimental results demonstrate that the proposed algorithm can achieve
more » ... R-D performance than that of other two RC algorithms including the algorithm JVT-G012 which is the current recommended RC scheme implemented in the H.264 reference software JM9.5. Index Terms-H.264, initial quantization parameter, rate control, rate-distortion optimization.
doi:10.1109/tcsvt.2007.913757 fatcat:pitmw6yo4zc2na7lxxlkpk6hba