CAJ | 학술논문

针对公路隧道洞外亮度L20（ S）的自动测试分析方法开展研究，通过理论分析得到数字图像灰度值与曝光量之间呈线性关系，给出了数码成像过程中所拍物体各点的亮度计算公式，采用数码成像技术测试隧道洞外亮度步骤、数码相机感光特性曲线的标定方法以及测试数据处理方法，对都江堰至汶川高速公路上两座已通车运营的隧道进行了现场测试分析，验证了测试方法。最终建立起基于数码成像技术的公路隧道洞外亮度自动测试方法。
침대공로수도동외량도L20（ S）적자동측시분석방법개전연구，통과이론분석득도수자도상회도치여폭광량지간정선성관계，급출료수마성상과정중소박물체각점적량도계산공식，채용수마성상기술측시수도동외량도보취、수마상궤감광특성곡선적표정방법이급측시수거처리방법，대도강언지문천고속공로상량좌이통차운영적수도진행료현장측시분석，험증료측시방법。최종건립기기우수마성상기술적공로수도동외량도자동측시방법。
By adopting the method of theoretical analysis , digital image grey value has a linear relationship with the exposure , and the calculation formula of luminance in various points of object in digital imaging process has been given .With road tunnel ambient exterior luminance L20 ( S) as the research object , and study of the automatic test and analysis methods , the method to analyze road tunnel ambient exterior luminance based on the digital imaging technology has been established .The process of testing road tunnel ambient exterior luminance by digital imaging technology , the method to demarcate sensitometric curve of digital camera , and the method to process test data have been established , eventually a method to automatic testing and analyzing the road tunnel ambient exterior luminance based on digital imaging technology has been established .Using the method of automatic testing and analyzing the road tunnel ambient exterior luminance , to conduct field test and analysis in two tunnels which were open to traffic on the Dujiangyan-Wenchuan highway , we just verified the test method .