摘要
本文针对点云与影像配准贴图的问题,研究比较了基于直接线性变换法和罗德里格矩阵变换法的共线方程解法。理论研究表明,罗德里格矩阵变换法既能够有效减少同名点选取的个数(只需4对同名点),又能够简化计算,快速地获取7个参数。同时为了达到最佳配准效果,提出基于OpenGL三维可视化投影矩阵变换的人机交互式微调改正方法。实验表明,基于4对点的罗德里格矩阵计算方法,操作简单、计算快捷,辅以人机交互调整后,配准可靠性更高。
Aiming at the registration and texture mapping problem between point cloud and image,this paper compares the results from direct linear transformation method and Lodrigues matrix transformation method.The study shows that Lodrigues matrix transformation method can not only effectively reduce the number of homologous image points,（only four pairs of homologous image points need）,but also can simplify the algorithm,and can get the values of seven parameters quickly.Meanwhile,in order to achieve the best registration results,a method of manual interactive fine-tuning to correct the texture mapping results based on OpenGL three-dimensional visualization is proposed.The experiment results show that the Lodrigues matrix calculation method with four pairs of points is simple,quick,and more accurate with the help of interactive manual adjustment.
出处
《工程勘察》
CSCD
北大核心
2011年第8期76-79,92,共5页
Geotechnical Investigation & Surveying
基金
科技部科研院所技术开发研究专项资助项目(2008EG131255)
关键词
直接线性变换
罗德里格矩阵
配准
纹理映射
OPENGL
三维可视化
direct linear transformation
Lodrigues matrix
registration
texture mapping
OpenGL
three-dimensional visualization
