| With the rapid development of industrialization, the improvement not in people’s living standard,but also into the average family car, so that the pressure increase in private car road traffic surge, also led to increased car accident, car accidents not only cause personal injury and property the loss also makes families into huge trouble. How to make the vehicle a safe way to travel has become a goal of people, so the research on vehicle safety technology has a more vital significance.The measurement of vehicle safety distance and the tracking of the vehicle target is researched intensively in this paper,the safe distance is the essential condition for the vehicle running to ensure the personal safety.The current traffic information is reflected by target vehicle tracking and distance measurement objectively, the occurrence of accidents in traffic accident.can be reduced by the assistant technology effectively.The research status and development of the visual vehicle safety detection technology based on domestic and foreign is analyzed deeply.The structure of the active safety system of vehicles is introduced and the vehicle ranging and vehicle tracking.is studied,The emphasis is on the safety distance measurement and the vehicle target tracking algorithm.Aiming at the vehicle ranging system, the common ranging method is analyzed and compared, and the defects of their application in the practical engineering environment are studied.Finally, The matching method based on the SIFT feature point, a new matching constraint function is constructed in the process of SIFT feature points matching.This method can reduce the matching time and can also reduce the error caused by the jump of the rare feature point is.show through Experimental results.The tracking method of various vehicle targets is analyzed,aiming at the target vehicle tracking, and the target tracking algorithm based on the moment invariants and the updating fixed template is proposed.The simulation experiments were carried out with Matlab and OPENCV,The tracking lost phenomenon can be improved effectively which is caused the by the running process of the vehicle scale, rotation and occlusion,through the experimental results,the implemented and accuracy.of the vehicle safety distance measurement and the vehicle tracking is further verified. |
