Design And Implementation Of Vehicle Panoramic View System Based On Embedded System

With the development of modern industry and technology,more and more cars are on the road,and the frequency of traffic accidents is becoming higher and higher.There are about 500 thousand cases of traffic accidents caused by vehicle blind sight areas in the world every year,so it will be of great importance and necessity to study the vehicle panoramic view system to eliminate the blind area and improve the driving safety.The vehicle panoramic view system,which uses multiple cameras collect images around the car and transformes the image to top view image without distortion by image processing.At last,the driver can see a aerial view which is stitched by the images.After acccomplishing the demand analysis and simulation study of image processing,paper designs the scheme of vehicle panoramic view system with four cameras and determines the position and angle of camera.In order to solve the problem of large computational complexity,thesis designs the embedded hardware platform with DM6446 as the core,the hardware platform includ: image acquisition module,core processor,display module,power supply module and so on.Paper researchs the dual-core communication mechanism of DM6446,and builds the software development environment of ARM and DSP on Linux system.Paper designs the algorithm of image correction and image stitching,and researchs the algorithm on computer and the embedded hardware platform.Because of the failure offeature matching,papaer designs the algorithm of image mosaicing,the panoramic picture can be acquired by calculation.The simulation test environment was set up in the actual parking space,paper determines the height and angle of the camera.Also,papaer accomplishs the camera demarcation and calculation of calibration parameter by software and acquires a overhead view panoramic after finishing fisheye correction,keystone correction and image stitching.After testing the vehicle panoramic view system designed by this paper in the practical condition,the test result verify the availability of thesis work.