Computer Engineering and Applications ›› 2007, Vol. 43 ›› Issue (20): 90-92.

• 学术探讨 • Previous Articles     Next Articles

Reconstructing 3D structure of planar object from line drawing based on constraints between lines and junctions

CAO Qiu-ping,GAO Man-tun,SHI Yi-kai   

  1. Institute of Mechanical and Electrical Engineering of Northwestern Polytechnical University,Xi’an 710072,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2007-07-11 Published:2007-07-11
  • Contact: CAO Qiu-ping



  1. 西北工业大学 机电学院,西安 710072
  • 通讯作者: 曹秋萍

Abstract: Extracting three-dimensional information of an object from its two-dimensional projection is a primary objective in contemporary computer vision research and thus has been long been studied.In this paper,a new method of reconstruction three-dimensional models from two-dimensional hidden-part-drawn line drawings is proposed.Hidden-part-drawn line drawings researched here are depicted under the perspective projection of a planar object.Some constraints between lines and junctions are given on basis of the location relations of lines and junctions.A linear system is established based on these constraints.The three-dimensional information of a planar object can be obtained by solving the linear system.The feasibility of this method is proved by mathematics and the experiment results.

Key words: 3D reconstruction, hidden-part-drawn line drawing, planar object, framework model, perspective projection

摘要: 提出了一种基于点与直线关系从透视投影画隐线图建立平面立体线框模型的新方法。给出了基于点线关系的基本约束,根据透视投影画隐线图中隐含的点与直线位置关系建立约束方程,建立一个线性系统,通过求解该线性系统得到平面立体的三维信息。用算例进行验证,得到了平面立体的三维信息。

关键词: 三维重构, 画隐线图, 平面立体, 线框模型, 透视投影