测量路面三维纹理双目重构算法的约束改进  

Constraint improvement of binocular reconstruction algorithm used to measure pavement three-dimensional texture

作　　者：王元元 孙璐 刘卫东 薛金顺 WANG Yuan-yuan;SUN Lu;LIU Wei-dong;XUE Jin-shun(Hubei Key Laboratory of Power System Design and Test for Electrical Vehicle,Hubei University of Arts and Science,Xiangyang 441053,China;Department of Civil and Environmental Engineering,College Park,University of Maryland,MD 20742,USA;Guangxi Key Lab of Road Structure and Materials,Guangxi Transportation Science and Technology Group Co.Ltd.,Nanning 530007,China)

机构地区：[1]湖北文理学院纯电动汽车动力系统设计与测试湖北省重点实验室,湖北襄阳441053 [2]马里兰大学帕克分校土木与环境工程学院,美国马里兰州20742 [3]广西交科集团有限公司广西道路结构与材料重点实验室,南宁530007

出　　处：《吉林大学学报（工学版）》2021年第4期1342-1348,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51808084);“机电汽车”湖北省优势特色学科群项目(XKQ2021026).

摘　　要：为了提高沥青路面三维纹理的测量精度,对传统双目重构算法开展了三重约束改进:首先,引入激光线约束;其次,加工改进双目重构测试系统和三维纹理测量精度评价装置;最后,建立区域分割匹配算法。结果表明:无论是整体测量还是单点测量,引入激光线约束均有助于提高精度,且测量精度会随激光线约束数目的增多而提高,6条激光线约束数目已经可以满足路面纹理的测量。改进算法能够在50~350 LUX的光照范围内保持稳定,具有良好的抗光干扰能力。In order to improve the measurement accuracy of three-dimensional(3D)texture of asphalt pavement,the traditional binocular reconstruction algorithm was improved in threefold.First,the laser line constraint was introduced.Second,the improved binocular reconstruction test system and the 3D texture measurement precision evaluation device were produced.Finally,the regional segmentation matching algorithm was established.The results show that the introduction of laser line constraints can improve the accuracy of both overall measurement and single point measurement.Moreover,the measurement accuracy of the improved algorithm can be improved with the increase in the number of laser line constraints.Using six laser constraints,the improved algorithm can satisfy the precise measurement of pavement 3D texture.Additionally,the improved algorithm has good anti-interference ability to light,and can keep stable in the illumination range of 50~350 LUX.

关 键 词：道路工程 激光线约束 改进双目重构算法 区域分割匹配 三维纹理 

分 类 号：U416[交通运输工程—道路与铁道工程]