分数像素精度运动估计的DSP优化方法

Technique of DSP optimization on fractional-pixel-accuracy motion estimation

分析了分数像素精度运动估计中出现过量数据Cache缺失的原因,并且由此提出一种相对于现有技术可以显著减少Cache缺失的1/4像素精度参考图像数据存储方法,从而实现高运算效率和高数据传输效率的1/4像素精度运动估计。

The reason of excessive data cache miss was analyzed during the fractional-pixel-accuracy motion estimation, and then a new reference picture data storage approach was proposed for quarter-pixel-accuracy motion estimation, which was able to remarkably decrease the data cache miss comparing with the current techniques. By this approach, the quarter-pixel-accuracy motion estimation was implemented with high computational efficiency and high data transmission efficiency.