利用高动态范围图像技术测量道路亮度的方法探究

摘要

The theory and technology of obtaining the Photometric and Color Parameters from the lighting environment through Low Dynamic Range Images have been very mature .But due to the record format limitations, the Low Dynamic Range Image can ’ t record the entire luminance information when the Brightness Contrast of the environment exceeds a certain extent .Thus the High Dynamic Range Image is introduced to solve this problem .The object of this paper is to establish a method of obtaining the Photometric Parameters from the lighting environment through HDR Images .In this research , we compared with the traditional test method to demonstrate the reliability of the method .Also the correction factor of the method should be discussed in future study in order to apply the method to obtain the luminance information from lighting environment .This research provides a foundation for a new method to assess the lighting environment .%目前利用低动态范围图像获取光环境中的光度和颜色参数的技术和理论已经很成熟，但由于图像记录格式的限制，尤其是当环境光的亮度对比超过一定限值时，低动态范围图像就不能完整记录亮度信息。为了解决这一问题，课题组将高动态范围图像技术（ HDRI）引入本研究。本研究的目的是建立一种可以利用HDRI获取光环境中的光参数的方法，对该方法的可靠性进行论证。通过与传统测试方法进行对比，分析误差来源及范围，为之后相关研究建立基础。