面向三维重建的视图坐标转换  

Coordinates Transformation of Engineering Drawings for 3D Reconstruction from Orthographic Views

作　　者：张爱军[1] 诸昌钤[1] 王喆[1] 

机构地区：[1]西南交通大学计算机与通信工程学院,四川成都610031

出　　处：《西南交通大学学报》2001年第1期57-61,共5页Journal of Southwest Jiaotong University

摘　　要：结合画法几何学和工程制图的投影原理和制图规则 ,讨论了统一二维坐标系下的各视图图形坐标到空间投影坐标的转换策略 ,通过引入二维半中间坐标系推导出了映射算子 ,并建立了各视图间对应点坐标在统一二维坐标系下的联动约束关系。Coordinates transformation of engineering drawings is the basis proce ss for 3D reconstruction from orthographic views. In this paper, a method is pre sented for segmenting engineering drawings into views and establishing the corre sponding relations of coordinates between them. Two sets of 2.5D coordinate syst ems are introduced as intermediates to relate the 2D original drawing system to the 3D space projection coordinates, and a formal technique is developed for con structing transformation matrices between coordinates. Coordinate constraint b ased driving relations are established in addition between the views.

关 键 词：坐标转换 工程视图 三维重建 视图坐标 空间投影坐标 映射算子 投影原理 制图规则 

分 类 号：TH126.2[机械工程—机械设计及理论]