基于自适应运动矢量模式的代码转换机的研究

Transcoder Based on the Model of Adaptive Motion Vector

本文介绍了代码转换机的基本原理 ,分析了由于运动矢量不准确所造成的质量下降原因 ,提出了一种改进的自适应运动矢量模型 ,并基于 DCT系数理论模型 。

The principle of transcoder is introduced in this paper. The quality degradation due to the inaccurate motion vectors during transcoding is analyzed.An adaptive motion vector refinement is proposed,and adaptive algorithm is developed based on the theoretical model for DCT coefficients.