【作者】 陈鲤江； 刘铁根； 李钢； 杨永； 王磊；

【Author】 CHEN Lijiang LIU Tiegen LI Gang YANG Yong WANG Lei(College of Precision Instrument and Opto-electronics Engineering, The Key Laboratory of Opto-electronic Information Science and Technology of Ministry of Education, TianjinUniversity, Tianjin 300072, China)

【机构】 天津大学精密仪器与光电子工程学院光电信息技术科学教育部重点实验室；

【摘要】 文章对利用面阵CCD摄像机测试摩托车前照灯配光性能的方法进行了理论分析,采用CCD图像像素灰度值来表示配光测试屏幕上的照度值,以实现CCD摄像机测试摩托车前照灯配光性能的目的。文章对配光测试屏幕上各测试点的图像像素灰度分别进行了照度标定,建立了屏幕照度与屏幕图像灰度之间的对应关系。标定实验结果得出的标定误差0.021lx,系统符合摩托车前照灯配光性能测试的要求。更多还原

【Abstract】 Theoretical analysis on detection of photometric characteristics of motocycle headlamp used matrix CCD camera is presented. In the paper, illuminance value is denoted with grey level of CCD image. Before detection of photometric characteristics of motocycle headlamp, grey level of CCD image was calibrated with illuminance value. The corresponding relationship between illuminance and gray level is established. The experimental results show that the photogrammetric system meets the requirements of detection of photometric characteristics of motocycle headlamp, the measurement error is 0.021lx.更多还原