一种自适应十字—方形运动估计快速算法  

Adaptive cross-square algorithm for fast motion estimation

作　　者：王莉莉[1] 黄晓革[1] 甘涛[1] 

机构地区：[1]电子科技大学电子工程学院,成都610054

出　　处：《计算机应用研究》2009年第2期540-542,共3页Application Research of Computers

摘　　要：为了减少视频编码的运算量,提出了一种新的自适应十字—方形运动估计搜索算法(ACSS),根据不同的搜索模式给出了三个提前退出门限以及提前退出技术的快速运动估计算法,它体现了粗定位和准定位的并行处理思想。仿真结果表明在不降低信噪比和码率的情况下,ACSS算法的计算复杂度有明显的改善,可广泛用于各编码标准,提高编码的速度和效率。In order to reduce the computation,this paper proposed a new adaptive cross-square search algorithm for motion estimation(ACSS).Meanwhile,incorporated three early termination criteria into the motion estimation process according to multiple motion estimation modes.The new algorithm ACSS was based on two schemes: rough location and accurate orientation.With the similar PSNR and bit rate,the result of emulation indicates the computational complexity of the cross-square algorithm is reduced significantly.It ca...

关 键 词：H.264标准 块匹配 自适应十字—方形搜索 运动估计 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]