摘要
提出了工程图的分解重构思想以及基于该思想的分级重建算法;从三维重建的角度,分析总结了回转体的投影特点,提出了在二维视图中确定回转体中心线定位点的方法。笔者所提出的算法,能够识别与重建空间任意位置的平面体、圆柱体、圆锥体及其复合体。对回转体的重建不依赖于相贯线的理论投影,从而允许相贯线在视图中采用近似画法。
A thought of decomposing and reconstructing the engineering drawings is presented. Based on it, a classification algorithm for reconstructing 3D Objects is set up. From the point of view of 3D reconstruction, the projection characteristics of the objects of revolution are analyzed, and a method to determine the positioning points of the object of revolution centerline is presented. The algorithm presented by this paper can recognize and reconstruct polyhedrons, cylinders, cones and the composite objects from them. There are no any limits to positions of the polyhedrons as well as the axes of the objects of revolution. The reconstruction of the objects of revolution dose not depend on the theoretic projections of the line of intersection. So that, the line of intersection can be constructed approximately.
出处
《工程图学学报》
CSCD
2004年第2期39-45,共7页
Journal of Engineering Graphics
基金
山东省科技厅专项科技经费资助项目
关键词
计算机应用
三维重建
工程图
复合体
computer appliocation
3D reconstruction
engineering drawings
composite object
