利用高动态图像技术测量道路照明光度参数的原理及方法

The Principles and Methods to Measuring Road Lighting by High Dynamic Image Technology

随着城市道路交通系统的复杂化,立交桥、快速路增多,传统的道路照明测试方法难以满足现场实测的需求。基于高动态范围图像(High-Dynamic Range image,缩写为HDRI)技术的光环境参数提取方法,可以解决以上问题。阐述了高动态范围图像的特点和获取方法,以及从高动态范围图像中提取亮度值的原理,并论证了采用高动态范围图像进行道路光环境测量的方法的可行性。

As the urban road traffic system getting more complex , just like the increasing overpasses, traditional testing methods can not fit the need of field measurement .This research is based on the method of parameter extraction by light environment of high dynamic range imaging technology （ High-Dynamic Range image, HDRI ）. The method can be used to solve the above problems .It elaborates the characteristics of high dynamic range image , the access methods and the principle of exacting brightness values from high dynamic range image.The feasibility of using the method to measure the road light environment was also demonstrated .