Application Of Binocular System In Automobile Reverse Image

As people’s living standards improve, the cars come into the families. Roads, streets, parking lots and garages become more crowded, active safety is the new direction of development of automotive electronics. Car reversing Since driving skills, the perspectives and the direction opposite to a series of problems frequently cause accidents, especially for the novice higher accident rate. So in terms of safety car reversing aid should be strengthened and improved.Binocular stereo vision is very comprehensive, involving many areas of professional knowledge. Now the binocular stereo vision system technology has been developed very mature, but in the car reverse image is not fully applied. In this paper, we study and experiment on the background of the application of binocular vision in reverse image.First, in camera calibration aspects of the research, based on the traditional method of camera calibration analysis, presented as a target based on the checkerboard image of semi.automatic camera calibration method. According to Zhang Zhengyou two.step calibration method, the calibration program uses a single camera is first calculated linear model, and then use a single camera on the two cameras are calibrated strategy calibration. Experimental results show that the proposed calibration method is simple and reliable, and can meet the accuracy.Secondly, the use of feature.based matching policy, we use the idea of a feature point SURF angle detection and description, and the key points of the mismatching problem for the matching process, using an optimized RANSAC algorithm and cross matching strategy, better excluding the mismatching key point right, matching the success rate and high precision.Finally, the feature point matching basis, according to the principle of feature points ranging depth information recovery, complete ranging purposes, as well as according to the vehicle motion model, deduced reverse trajectory equation, the equation highly convenient platform migration parameters. The system uses common imaging device, part precision distance measurements reached only with the general electronic level, but to meet the real.time requirements, while functional part trajectory is able to achieve a good curve to follow the information in real time to change the steering and painting purposes.