摘要
沥青路面三维纹理信息是表征路面抗滑等性能的重要信息。针对沥青路面弱纹理无纹理区域匹配错误率高对信息获取造成较大干扰的问题,提出了一种基于双目视觉立体匹配算法的路面三维纹理信息获取方法。首先搭建双目视觉测量平台,运用张正友棋盘格标定法获取双目相机的内外参数;然后针对双目相机采集的数字图像,使用引入跨尺度代价聚合模型的立体匹配算法得到较优的视差图;最后逆向重构得到路面纹理三维模型,进而获取路面纹理信息。实验结果表明:所提方法可以重构得到较为精确的路面三维模型,相对误差在5%内,对于路面纹理信息的获取具有较高的准确性和较好的鲁棒性。
The three-dimensional(3D)texture information of asphalt pavement is important information for characterizing its skid resistance.To mitigate the problem of interference to information acquisition due to the high matching error rate in the weak-textured and non-textured areas of the asphalt pavement,this paper proposes a pavement 3D texture information acquisition method using a binocular vision stereo matching algorithm.First,the binocular vision measurement platform is built,and the internal and external parameters of the binocular camera are obtained using Zhang Zhengyou’s checkerboard calibration method.Second,for the digital images collected by the binocular camera,the stereo matching algorithm that introduces the cross-scale cost aggregation model is used to get a better parallax map.Finally,we obtain the 3D model of the pavement texture using reverse reconstruction,and then the pavement texture information is obtained.The experimental results show that the proposed method reconstructs a more accurate 3D model of the road surface with the relative error within 5%and has a high accuracy and a good robustness for obtaining road texture information.
作者
江荣
朱攀
周兴林
柳璐
Jiang Rong;Zhu Pan;Zhou Xinglin;Liu Lu(School of Machinery and Automation,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China;Key Laboratory of Metallurgical Equipment and Control Technology,Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China;Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering,Wuhan University of Science and Technology,Wuhan 430081,Hubei,China)
出处
《激光与光电子学进展》
CSCD
北大核心
2022年第14期274-282,共9页
Laser & Optoelectronics Progress
基金
国家自然科学基金(51778509,51827812,61901310,52172392)。
关键词
双目视觉
立体匹配
三维重构
路面纹理
图像处理
binocular vision
stereo matching
3D reconstruction
pavement texture
image processing
