摘要
提出了一种快速1/4像素的运动估计算法。该算法基于运动补偿预测误差模型,与传统的1/4像素的分层运动估计算法不同,仅通过一步计算就能直接得到1/4像素精度的运动矢量,而且完全避免了运算量很大的分数像素内插运算和整像素搜索完成后的分数像素搜索。实验结果表明,该算法在保持图像质量的前提下极大地减少了1/4像素运动估计的运算量。
A fast quarter-pixel motion estimation algorithm was proposed.which is based on mathematical models of the motion compensated prediction errors.Different from conventional quarter-pixel accuracy hierarchical motion estimation algorithm,the proposed algorithm can avoid fractional-pixel interpolation and subsequent fractional-pixel search after integer-pixel accuracy motion estimation.Experiments show that the proposed algorithm greatly reduces the computational complexity of quarter-pixel motion estimation,while keeping the nearly equal quality of the image.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2008年第7期960-962,980,共4页
Journal of Optoelectronics·Laser
基金
教育部新世纪优秀人才支持计划资助项目(NCET-05-0897)
新疆维吾尔自治区高校科学研究计划资助项目(XJEDU2004E02
XJEDU2006I10)
