H.264运动估计算法研究

Research on H.264 Motion Estimation Algorithm

在H.264视频编码算法中,运动估计的运算精度和效率会直接影响输出码流的质量和流量。为提高H.264运动估计算法精度和效率,利用磁力跟踪器获取摄像头运动矢量,并与非对称十字六边形搜索算法获取的运动矢量进行合成。实验结果表明,改进算法在保持运动估计性能的同时,可提高场景发生改变时运动估计的精度。

In the H.264 algorithm,Motion Estimation（ME） complexity directly affects the quality and flow of the output stream.In order to improve H.264 ME accuracy,the camera motion vector is got using magnetic tracking device and synthesized with UMHexagonS motion vector.Experimental results show that the refined algorithm improves the accuracy in a changing scene,and maintains performance of motion estimation algorithm as well.