基于虚拟线圈的光流法车流量检测

在交通系统中常需要知道道路的占有率、车流量等交通参数。该文提出了一种有效的车流量检测方法，这种方法首先在视频图像中设置好虚拟线圈作为检测区域，然后用光流法对检测区域进行图像处理，求出光流场，根据光流场的信息来判断检测区域内是否有车辆通过，通过对检测区域的不断判断来统计车流量信息。试验证明该文提出的车流量检测算法具有实施方便、检测精度高的特点，而且很容易推广用来测量占有率、车速等其它交通参数。

Detecting Traffic Volume Statistics Based on Virtual Coil with Optical Flow Method

In order to know the traffic parameters such as the rate of the road used and the traffic volume statistics,the paper presents an efficient method of the traffic volume statistics. Firstly, set virtual coils as the detection zone in the video, then the detection zone is processed by optical flow method to get the optical flow field, finally, according to the information of the optical flow field we can know whether there are vehicles in the detection zone or not. At the same time we get the traffic volume. Experiences show this method is not only easily implemented but also has high precision,so it can be widely used to detect the rate of the road used, speed and so on.