Abstract:Applying graphic developing tools of Halcon and OpenCV on VC++6.0 platform, background subtraction and region-based tracking algorithms are used to realize picking up and tracing the moving vehicle target, and the data is saved synchronously. Transacting the video data information, the track, velocity and the acceleration of conflicting vehicle is calculated respectively, and multi parameter based traffic conflict judging measure is setup. Thus the video-based vehicle conflict automatically detecting system for simple traffic environment is initially developed.