光流是一种简单实用的图像运动的表达方式，通常定义为一个图像序列中的图像亮度模式的表观运动，即空间物体表面上的点的运动速度在视觉传感器的成像平面上的表达。-Optical Flow is a simple and practical expression of motion pictures, generally defined as the apparent motion a sequence of images in an image brightness mode, ie velocity of points on the surface of the object on the imaging plane spatial expression of the vision sensor.