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汽车前照灯测量误差修正系统的设计与实现(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2010年02期
Page:
107-110
Column:
研究论文
publishdate:
2010-03-30

Article Info:/Info

Title:
Design and implementation of correction system for measuring error of automobile headlamp beam
Author(s):
MIN Yongjun1 ZHU Liujian1 ZHU Huayong1 XU Zhaojun2
1.College of Automobile and Traffic Engineering, Nanjing Forestry University, Nanjing 210037, China; 2.College of Electronic and Mechanical Engineering, Nanjing Forestry University, Nanjing 210037, China
Keywords:
headlamp beam testing measuring error correction digital image processing OTSU successive approach method
Classification number :
U472.9
DOI:
10.3969/j.jssn.1000-2006.2010.02.025
Document Code:
A
Abstract:
Because the measuring result of azimuth for automobile headlamp beam is prominently influenced by the longitudinal bias angle of the automobile location, a correction method for measuring error was proposed based on digital image processing. Camera was used to take the image of the automobile location. The profile of the automobile’s figure was obtained with the OTSU adaptive threshold segmentation algorithm. The automobile longitudinal bias angle was figured out by the successive approach method. Finally, the measuring result of headlamp tester was corrected by the bias angle so that automatic correction is realized. The experimental results indicated that this method could effectively obviate the influence of the bias angle, and greatly improve the measuring precision of azimuth for automobile headlamp beam.

References

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Last Update: 2010-05-14