摘要
针对已有三维直线重建算法的不足,提出了基于同名直线和点云数据的三维直线重建算法,该算法先应用单应矩阵与核线双重约束实现直线匹配,再依据共线条件方程的基本原理,经过初步确定高程值、验证与精化高程值、光束与物面交会及精化三维空间直线段等一系列过程,最终实现空间直线的三维重建。该实现过程简单易懂,并能获得较高精度的三维空间直线。
Against the deficiencies of existing algorithmics of reconstruction of three-dimensional line,the algorithmic of reconstructing three-dimensional line based on homonymous line and three-dimensional point cloud data is put forward.In the first place,homonymous line is matched by homography and epipolar-line constraint.Then,according to basic principles of collinearity equations,it initially sets elevation value,then,verifies and refines elevation value,intersects beam and object plane,refines three-dimensional line,in the end,it completes reconstruction of three-dimensional line.The prosess of reconstructing three-dimensional line is uncomplicated and easy to understand,and it obtains three-dimensional straight line which has higher accuracy.
出处
《海洋测绘》
2011年第2期68-71,共4页
Hydrographic Surveying and Charting
基金
辽宁省科技厅社会发展攻关项目(2007-251)
关键词
同名直线
点云数据
光束与物面交会
直线三维重建
homonymous line
point cloud data
intersecting beam and object plane
reconstruction of three-dimensional line
