照明工程学报2024，Vol.35Issue(4)：35-42,8.DOI:10.3969/j.issn.1004-440X.2024.04.006
基于物联网视频流的公路隧道实时洞外亮度测量方法研究
Research on the Real-Time Measurement Method of Outside Tunnel Brightness of Highway Tunnels Based on IoT Video Streams
摘要
Abstract
Aiming at the problems such as time-consuming and heavy workload existing in the traditional outside tunnel brightness testing methods,a real-time outside tunnel brightness testing method based on IoT video streams is proposed.The method collects image data through cameras,using 4G network or WIFI for real-time remote transmission,uses programs to grayscale the image frames to obtain the grayscale values of the images,and uses the luminance meters to optically calibrate the cameras to derive the specific functional relationship between the exposure amount and the grayscale values,i.e.,the luminance regression equation to calculate the luminance value of the target area.And through the distance correction of the camera grayscale,the measurement error is effectively reduced,and the distance effect of the camera brightness is reduced.The measurement method proposed in this paper is applicable to the measurement of the outside tunnel brightness of most mountainous highway tunnels,and has the characteristics of low cost,quick installation,convenient remote monitoring,stable transmission and strong anti-interference ability.关键词
公路隧道/洞外亮度/亮度计/物联网摄像机/视频流Key words
road tunnel/ambient exterior luminance/luminometer/IoT camera/video streaming分类
交通工程引用本文复制引用
付锐,苏开春,冷希乔,曾弘锐,郭春..基于物联网视频流的公路隧道实时洞外亮度测量方法研究[J].照明工程学报,2024,35(4):35-42,8.基金项目
四川省社会科学规划项目(SC22B031) （SC22B031）
四川省交通运输科技项目(2021-ZL-04) （2021-ZL-04）
成都医学院四川应用心理学研究中心资助项目(CSXL-23327) （CSXL-23327）
中国交通教育研究会教育科学研究课题(JT2022YB163,JT2022YB405) （JT2022YB163,JT2022YB405）
