多维矢量矩阵变换域的运动矢量估计

为了实现对视频中运动目标的运动矢量估计,建立了多维矢量矩阵变换域运动估计系统,在变换域对运动视频中运动目标形成的多维能量集中平面进行研究。首先,介绍了多维矢量矩阵理论、变换理论以及运动目标在变换域形成能量集中平面的理论推导;然后,采用平面拟合的方法,求取运动矢量的大小;最后,分析对比了几种方法的效果和迭代速度。实验结果表明:多维矢量矩阵变换域的运动平面拟合方法估计的运动矢量精度达到10^-2 pixel,提供了一种变换域运动矢量估计的高精度方法。

Motion vector estimation in multi-dimensional vector matrix transform domain

To realize the motion vector estimation targeted at moving objects in video, the motion estimation system based on transformation domain of multi-dimensional vector matrix is established. The research is then carried out in transformation domain to study on multi-dimensional energy concentration plane formed by moving objects in moving videos. Firstly, the theory of multi-dimensional vector matrix and transformation are introduced. Then the theoretical derivation of energy concentration plane in transformation domain formed by moving objects is presented. The next step is to calculate the motion vector using plane fitting method. Finally,the performance and iteration speed among a few methods are analyzed. Experimental results show that the motion vector accuracy obtained by moving plane fitting in multi-dimensional vector matrix transformation domain can reach 10^-2 pixel. A new high accuracy motion vector estimation method in transformation domain is provided.