Infrared Laser And Image Composite Anti-collision Warning Technology

In recent years,with the increase of vehicle ownership,the economic losses and casualties caused by vehicle collision accidents are becoming more and more serious.Since this is a traffic accident-prone country,vehicle active safety technology has become the focus of research institutions and automobile manufacturers.The purpose of this paper is to study vehicle collision avoidance and alarm technology under different application scenarios.The technology realizes the basic information of the front vehicle relative to the current vehicle,the location and the external characteristics of the front vehicle under different application scenarios by means of information processing.Against this background,we propose a monocular ranging model in simple scenes and a multi-sensor collision avoidance model with more widely used infrared laser and image data.The main research techniques in this paper are vehicle detection,monocular ranging,infrared laser and image composite anti-collision.The structure of this article is as follows:First of all,from the perspective of image processing,the method is proposed to detect shadow feature of vehicle from the angle of image processing,using two adaptive threshold segmentation algorithm to extract the vehicle,generate hypothetical area.then filtering out the false interference does not meet the conditions to ensure the accuracy of detection,which based on the vehicle symmetry.under the case of the vehicle has been detected,we study the camera distortion model of coordinate transformation relation and image,imultaneously,we get the camera internal parameters after using the plane calibration method which proposed by Zhang Zhengyou.Also,a lateral longitudinal ranging model is proposed by means of the fusion of infrared laser and image information,combining with the crash model,along with the adaptive Kalman filter algorithm to correct the measurement data so as to improve the reliability of the ranging model.Finally,this paper describes the technique of image information and a ranging pulse laser ranging information fusion under the complex scenes.At the same time,a calibration method of laser and camera position is proposed to reduce the assembly error of the solid-state system due to the assembly reasons.