基于摄影测量的路表三维模型建立

Photogrammetry-based 3D Modeling of Pavement

文章详细研究摄影测量的基本知识和理论方法,从理论上验证了此方法获取路面点位三维坐标的可行性。然后介绍相机双目视觉理论,由相机的成像模型引出相机的畸变参数,并给出了本文的相机标定方法,得到了本实验相机的内部参数。最后利用摄影测量的方法进行室内的路面模型试验,并把试验得到的点位相对距离与实际点位距离作比较,分析误差的产生原因并最终生成可视化的路表三维数字模型,结果表明本方法建模具有良好精度和准确性。

The article studies the basic knowledge and theory of photogrammetry method, verifies the feasibility of this method for 3D pavement, introduces the camera binocular vision theory and the distortion parameters from image model of the camera, and provides camera calibration method and the camera＇s internal parameters. In the end,an indoor pavement model test is made by photogrammetry and an comparison analysis of the relative distance of points with the real distance of points to find the causes of error and generating the visualization digital 3D model of pavement. The results show that this modeling has fine precision and accuracy.