基于显微视觉的沥青路面微观纹理三维重构  

Three-dimensional reconstruction of asphalt pavement microtexture based on micro-vision

作　　者：邹丽琼[1] 周兴林[1] 胡怡玮[2] 

机构地区：[1]武汉科技大学汽车与交通工程学院,湖北武汉430081 [2]中铁第四勘察设计院集团有限公司道路交通设计研究院,湖北武汉430063

出　　处：《武汉科技大学学报》2015年第4期297-301,共5页Journal of Wuhan University of Science and Technology

基　　金：国家自然科学基金资助项目(50978207);湖北省科技支撑计划项目(2014BEC055);湖北省自然科学基金重点资助项目(2015CFA064)

摘　　要：针对沥青路面微观形貌常用检测方法的不足,融合显微视觉的局部放大特性和数字图像处理技术,提出了基于显微视觉的沥青路面微观纹理三维重构方法。根据激光三角测量原理建立显微视觉三维重构数学模型;利用立体显微镜采集序列图像,对图像进行插值处理和阈值分割,并提取光条中心线;采用Delaunay三角剖分算法实现表面三维重构。与基于聚焦深度的沥青路面微观纹理三维重构方法进行试验对比分析,结果表明,本文方法对光照均匀性无特殊要求,具有精度高、操作简便、三维直观性强等特点。Aiming at the weakness of common detecting methods for asphalt pavement microtexture,this paper proposes a three-dimensional image reconstruction method of asphalt pavement microtexture based on micro-vision which combines the local amplifying characteristics of micro-vision and the digital image processing technique.A three-dimensional reconstruction mathematic model of micro-vision is established based on the laser triangulation principle.The sequential images are captured by stereo microscope,then processed by interpolating,threshold segmentation and extraction of the light stripe centerline.Finally,the visualization of asphalt pavement microtexture is realized by Delaunay triangulation algorithm.Compared with the 3Dimage reconstruction method of asphalt pavement microtexture based on focus depth,this method has no special requirement for illumination uniformity,and has the features of high accuracy,simple operation and strong 3Dvisualization ability.

关 键 词：沥青路面 微观纹理 显微视觉 三维重构 图像处理 

分 类 号：U416.217[交通运输工程—道路与铁道工程]