Optimization And Design Of Image Processing About Vehicle Driving Wandering Test System Based On LabVIEW

The vehicle driving wandering is a common phenomenon that seriously influence the safety of the vehicle. The phenomenon means that the driver adjusts a vehicle traveling straight on a flat straight road, and then let hands off steering wheel. If the car wanders and deviate away the straight line though it should keep going straight. This phenomenon exists in the new car and the using car, it will increase the difficulty of driving, Lead to fatigue driving, and result in a traffic accident probably. It will speed up the wheel tire wear, so the vehicle driving wandering is a great hidden dangers. Articles expound the definition of the vehicle wandering and the law about it, and analyze the reason and harm of the vehicle wandering. Based on the market, deal with the actual needs of Automobile Company, demonstrates the significance of the vehicle driving wandering test system.For a long time, testing vehicle wandering have ignored by Automobile Company. It use the traditional test methods. But the vehicle driving wandering test system successfully used in automobile production process improved the situation. In order to improve the system function, according to the existing detection system, the article discuss the hardware used to gather pictures, and study the core of the image processing program. Finally find out the optimized design scheme of the program.Image processing is the core of the vehicle driving wandering test system. It affects the accuracy and reliability of the system. Firstly, in the article, image acquisition consist of CCD image sensors, optical lens and lighting system. According to the actual situation and technical requirements, hardware have a quality standard. Secondly we study image processing technology by the method of combining theory and practice, then through the experiment, find out the way of the image preprocessing. The image preprocessing include median filter, morphological filter, histogram equalization and Prewitt image sharpening. According to the different light conditions, system will choose different pretreatment method. Finally we expound the principle and development of image template matching. Arm at the existing problems of the testing system, we bring in a bill about the vehicle wandering test method. That is the new idea of detection in the night and effective improvement in the day. So optimization design program achieve flexibility and effectuation of the image preprocessing program, achieve the arm of matching and positioning without optical mark in all-weather.In software development platform, application of machine vision module NI Vision, Using graphical programming language, achieve flexibility and effectuation of the image preprocessing program, and the arm of matching and positioning without optical mark in all-weather. The new image processing program can adapt to the work of test system. The vehicle driving wandering test system have been new development.