In this paper, a R-D model in SAD domain without much computation is proposed and an adaptive bit rate control algorithm is given,which not only can be applied in a wide range of bit rate condition,but also handles scene-change problem effectively.
本文提出了一种新的基于SAD域的码率控制算法,这种算法可以适用于大范围的码率环境。
Based on the video source model in SAD domain,a R-D model bit-rate control scheme is proposed.
本文在研究视频信源模型的基础上,提出了一种基于SAD域的R-D模型。
264 encoder,rate control computes the predicted SAD which can be used as a decision condition for terminating motion search.
264中整数变换、量化的特点,可以证明在宏块预测SAD和实际SAD的误差小于某一门限时,对编码质量不会产生影响。