一种局部和全局相结合的光流计算方法

光流场是计算机视觉的一个研究方向，微分法是计算光流场的一个常用方法，它分为全局方法和局部方法，全局方法能够得到100％的致密的光流场，而局部方法大多只能得到稀疏的光流场，但它在噪声情况下具有更好的鲁棒性。本文提出一种局部和全局相结合的方法．首先给出五点光流约束的局部方法，再结合全局方法，计算得到了既致密又 鲁棒的光流场。

An Optical Flow Computing Method with the Local and Global Methods Combined

Optical flow is a research direction of computer vision. Differential methods are widely used for computing optical flow. They can generally be divided into global methods and local methods. Global methods can yield 100% dense optical flow fields, while most local methods can only yield sparse optical flow fields. However, they are more robust under noise. In this paper, we present an optical flow computing method with both the local methods and the global methods combined. First the five-point-flow-constraint method is selected as the local method, and is then combined with a global method. As a result, both dense and robust optical flow fields can be obtained.