一种基于正等轴测草图的三维重构算法

Method of 3D Reconstruction Based on Given Axonometric Sketching

为便于实现平面立体的三维重构,提出一种基于正等轴测草图的重构算法。首先按面片组织轴测草图轮廓信息,通过交互指定父面,并建立各个面片之间的关系。其次对轴测草图的父面进行投影逆变换求解。然后将子面绕与父面连接的公共棱边旋转,并进行分类计算,当立体的表面积最大时,生成相应的目标形体。给出了用Matlab实现算法的关键技术和测试算例,从而快速实现平面立体的三维重构。实验结果表明了该算法的有效性和实用性。

This paper presented a method of 3D reconstruction based on given axonometric sketching to realize 3D re-construction of planar object conveniently. Firstly, according to the outline information of the patch organization of ax-onometric sketching, it establishes the relationship between all patches by interactive designated father-face. Secondly, it resolves the father-face of axonometric sketching by projection inverse transformation. Last, it rotates the child-faces a-round the edge linked to the father-face, and calculates them categorically when the area of the tridimensional reaches the maximum, generates the accurate target shape. The key technology and test drawings of the method realized by Mat-lab were given in this paper. The experiment results prove that the proposed method realizes 3D reconstruction of axono- metric sketching of general planar object with a certain availability and practicality.