Research On The Test Technology Of Automobile Headlamp Based On Image Processing

With the fast development of the economy and the society, the recoverable amount of the automobile in creases fast, the high-speed development of automobile technology make the speed of the automobile is faster and faster. The Frequency of car meet at night with high speed is higher .The inappropriate of the shine direction of automobile headlamp is the main hidden dangers for driving at night .Existing automobile head-light tester measure function not overall, low test precision influence implementation of the relevant national standard of automobile headlamp test safely by force. The main research contents of this subject are: 1.It is analyzed that the existing automobile headlamp near shines test method in the position and instrument existence problems, Put forward two ways of headlamp near shine azimuth test and biasing angles of the automobile location to adjustment the shining azimuth of automobile near headlamp to improve test precision, 2.Study the test principle and method of automobile headlamp near shine azimuth with pairs of location screen boards. Use the measure of pairs of location screen board can realize automobile headlamp near shine position independent testing, Overcome the measurement error cause by the distance error between of automobile and headlamp tester, and improve the precision of testing. 3.Study the test principle and method of the basis angles of the automobile location. Solve the influence on result of testing of basis of the automobile location effectively 4.Adopt MATLAB developing platform develop the computer program for test the headlamp near shine azimuth and biasing angles of the automobile location 5.Have developed the testing system for automobile headlamp near shine azimuth test, is it imitate to go on and the real car test synthetically, the result of the test indicates , the systematic scheme is feasible. The subject one realization can overcome the automobile headlamp test problem of the low test precision of the near light of the automobile headlamp shines azimuthally, and high inaccuracy rate, judging by accident rate for automatically tests. The subject have filled the domestic automobile headlamp test blank of the biasing angles of the automobile location on automobile headlamp testing. Problem remained to study and solving further: As to being able to adopt good treatment method in order to obtain good result in image processing, such as using the method of mode matches , automatic processing ,etc. to await further studying.