| With the rapid development of China’s social economy,the number of car ownership has increased rapidly,which has brought convenience to people’s production and life,and has also led to a series of security problems.In order to effectively avoid the occurrence of automobile traffic accidents,this paper studies the vehicle anti-collision warning system,completes the vehicle identification and distance measurement,and promptly warns the driver through the anti-collision warning strategy to avoid the collision danger and ensure the life of the drivers.This paper studies the key technologies of vehicle anti-collision warning system based on Android platform,including vehicle detection,vehicle distance measurement and anti-collision warning.The main research work of the thesis is as follows:(1)The CCD camera is used to extract and sample the road image,and the image information is format converted and transmitted to the microprocessor to preprocess the road image to be detected.Using the existing vehicle characteristics,combined with the Hog feature and the Haar feature training principle,the training classifier is applied to the positive and negative sample vehicle images,and finally applied to the vehicle detection to obtain the target vehicle image information in the complex road image to complete the vehicle detection;(2)A vehicle ranging scheme based on the detection principle of monocular vision system is proposed.The passive distance measurement technology is used to measure the vehicle distance on the highway,and a multi-level anti-collision warning strategy is proposed to determine whether the current following distance is Anti-collision warning is required;(3)Designed the automobile anti-collision warning system,including the vehicle detection,distance measurement and vehicle anti-collision warning function module.The algorithm used by each module is transplanted on the Android platform,and the appropriatehardware implementation environment supporting the Android platform is selected.Test the performance of the algorithm and the system runtime.Finally,the functional modules of the vehicle anti-collision warning system are tested.The test results show that the system can accurately identify the vehicle,accurately measure the distance of the following vehicle,and realize the early warning of the dangerous collision distance. |
