中文摘要：

针对车道偏离预警系统（LDWS）车道图像处理中，图像通常包含许多与车道搜索无关的信息，以及常规方法不能处理换车道过程中车道线跟踪的问题，提出了一种基于车辆运动状态的感兴趣区（ROI）确定方法，并给出了基于该方法建立感兴趣区的原理与方法。应用该方法对各种工况进行了试验，试验结果表明方法运行可靠，能够很好地解决换道过程中车道线跟踪的问题。

英文摘要：

In road image disposing process of LDWS （Lane Departure Warning Systems）, there are much information that can not be used for searching lane in images. For the problem of tracking lane in lane changing, the traditional way can not dispose it. This paper presented a method to establish ROI （Region Of Interest） based on the state of vehicle, and presented the principle and way to establish ROI. This method is applied to difference environment, and the experimental results show that the method can run smoothly. This method can disposes the problem of tracking lane in lane--changing very well.