一种由三视图自动构造三维实体的算法

An Algorithm for Automatic Construction of 3D Solid Objects from Three Views

提出一种由工程三视图自动构造三维实体的算法．该算法采用边界表示法描述子实体，并根据结构式立体几何法思想把子实体装配成三维实体．算法直接由二维点求三维边，从而改进了这一领域的一般算法．通过引入圆柱体作为附加的子实体，扩充了一般算法产生的三维实体域．本文所得实验结果是满意的．

This paper presents an algorithm which automatically constructs 3D solid objects from 3-view engineering drawings.The algorithm describes subobjects by the use of the boundary representation and assembles subobjects into 3D objects based on the constructive solid geometry phylosophy.Finding 3D edges directly from 2D points, the algorithm is superior to the general algorithms in this field; introducing a cylinder as an additonal subobject,it extends the domain of 3D objects which can be generated by the general algorithms for reconstruction.The experiment results obtained are satisfactory.