H.264协议是最先进的视频编码标准,但其算法复杂度也是超常的。为了解决这个问题,提出一种采用TI公司的最新多媒体处理器Davinci DM6446为核心的硬件平台,而在算法上提出了新的基于拉各朗日(Lagrange)的快速算法,充分利用中间结果,预先排除一些可能性小的预测模式,然后快速完成对运动估计的判决和模式选择的优化处理。实验结果表明:该方法可以有效地解决实时性差的问题,实现具有参考价值的H.264编码器。
Although H. 264 is the most advanced video encoding standard,realizing of the video encoder arithmetic is very complex. In order to solve this problem, based on the DSP chip of TI'S TMS320DM6446, it designs an arithmetic of H. 264 encoder based on Lagrange fast arithmetic. Intermediate computing results are used to reduce the predicting modes. And the optimal mode is selected. Experimental results show that the paper can solve the problem and realize video encoder of H. 264.