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河北工业大学
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图像处理前照灯检测仪校准器自动检定系统.

Title: 图像处理前照灯检测仪校准器自动检定系统.
Alternate Title: Calibrator Automatic Calibration System for Headlamp Tester of Motor Vehicle Based on Image Processing.
Language: Chinese
Authors: 潘越1 jilinpy@163.com
徐煕平1 xxp@cust.edu.cn
张帆2
姜肇国1
乔杨1
李艳荻1
Source: Acta Armamentarii. may2015, Vol. 36 Issue 5, p861-868. 8p.
Document Type: Article
Author-Supplied Keywords: apparatus and intruments technology ; calibrator ; charge-coupled device ; image processing ; 仪器仪表技术 ; 图像处理 ; 校准器 ; 电荷耦合元件 ; Language of Keywords: English; Chinese
Abstract (English): In order to make sure the measurement accuracy of calibrator for the headlamp tester, the optic axial angle and the light intensity of the calibrator should be detected periodically. In consideration that the degree of automation in the traditional testing scheme is insufficient and the repeatability of test is difficult to guarantee, a testing method is proposed. This method is based on the combination of image processing and the high-precision electric turntable. The automatic detection of calibrator with a high precision is realized by using the equal ratio relationship between practical displacement and pixel displacement, as well as the linear relationship between image plane's illuminance and object plane's illuminance. The experimental data obtained under different illuminances is fitted by the use of least squares. And the regression linear equation can be got, and the equiluminous curve of vertified calibrator is drawn. The experimental analysis shows that the measurement accuracy of optic angle can reach 40″ and the relative measurement uncertainty of illuminance is less than 1% at the distance of 10 m. [ABSTRACT FROM AUTHOR]
Abstract (Chinese): 为保证前照灯检测仪校准器的测量精度, 需要对其光轴角与光强度进行定期检定。针对传统检定方案中, 自动化程度不足, 难于保证检定重复性的问题, 提出了一种图像处理技术与高精度电动转台相结合的检定方法, 利用实际位移与像素位移间的等比关系及像面灰度与物面照度间的线性关系, 实现了对前照灯检测仪校准器的高精度自动检定。使用最小二乘方法对不同照度下的实验数据进行拟合, 求出了回归线性方程并绘制了被检校准器光源的等照度曲线。实验分析表明, 10 m远距离上,光轴角的测量精度在40″以内, 光照度的相对测量不确定度小于1%. [ABSTRACT FROM AUTHOR]
(Copyright applies to all Abstracts.)
Author Affiliations: 1长春理工大学 光电工程学院, 吉林 长春 130022 ; 2江苏省计量科学研究院, 江苏 南京 210023
ISSN: 1000-1093 (Sherpa/RoMEO, JCR)
PageCount: 861-869
volume: 36
issue: 5
issn: 10001093
pubdate: 2015
DOI: https://doi.org/10.3969/j.issn.1000-1093.2015.05.014
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