基于RDWT与改进SIFT的DT网格运动估计与补偿*

为进一步提高运动估计和补偿的效果，提出了一种基于RDWT与改进SIFT的DT网格运动估计算法。首先在RDWT域内提取潜在运动区（PMA），并设计了自适应的特征点提取模板；然后对SIFT算法进行了改进，它能快速进行特征点的精确提取与匹配，进而生成DT网格；最后利用仿射变换在PMA内进行运动估计与补偿。实验表明，该算法能快速有效地提取视频图像的特征点，在保持较高峰值信噪比(PSNR)的情况下提高运动估计的效率，且重建图像的主观质量很好，较现有基于不规则三角网格的运动估计算法在PSNR和效率上有一定优势。

Delaunay triangulation mesh-based motion estimation and compensation based on redundant discrete wavelet transformation and improved SIFT algorithm

To ulterlorly improve the effect of motion estimation and compensation,this paper proposed a delaunay triangulation mesh-based motion estimation algorithm based on redundant discrete wavelet transformation(RDWT) and improved SIFT algorithm.First,it extracted the potential motion area(PMA) and designed a adaptive template for feature points extracting in RDWT domain.Then proposed an improved SIFT algorithm.It could extract and match the feature points fast and accurately and generate DT mesh.Finally,a delaun...