摘要
三维点云获取系统能够快速地获取目标物体的几何信息,生成大量点云,将目标的真实三维形态在计算机中可视化的展现出来。本文提出了一种新的三维点云数据获取的方法,应用在自主开发的基于激光影像的物体三维点云获取系统中,即标定激光面映射目标表面点的一维坐标,利用单像摄影测量后方交会和一维坐标的联合解算,得出目标点三维伪坐标。通过坐标逆向旋转恢复,得到真实的三维坐标数据,据此完整地建立目标物体的三维可视化模型。
The acquisition system of 3D point cloud can get the geometric information fast and provide a lot of point cloud data in order to show the object 3D shape on a computer. This paper gives a new method of getting 3D point cloud data that is applied to the self-made system of object 3D point cloud acquisition based on image with laser. The calibra- ted laser area reflects the one dimension coordinates of object surface. Through the combined calculation of one dimen- sion coordinate and resection of single photogrammetry the original 3D coordinates of object points can be obtained. Through reverse rotation we can get the true 3D coordinates and construct the complete 3D visual model of object.
出处
《城市勘测》
2013年第6期89-92,共4页
Urban Geotechnical Investigation & Surveying
基金
国家自然科学基金资助项目(41271454)
关键词
相机标定
激光线检测
三维建模
calibration
detection of laser line
3D modeling
