摘要： 视图分离是工程图三维重建的关键步骤之一。该文提出了一种新的工程图视图分离方法，通过将二维视图中的图元转换为图像，利用图像域中离散像素点的连贯性，快速稳定地在图像域中找到视图轮廓和轮廓的最小包围矩形，达到分离视图的目的，然后在图形域中精确确定视图最小包围矩形。该方法的分离过程与视图中图元组合复杂性无关，并能自动分离任意视图数目的工程图。

关键词: 工程图理解, 视图分离, 图像处理, 视图轮廓, 三维重建

Abstract: View separation is one of the important steps in 3D reconstruction of engineering drawing. This paper proposes a new method aiming at separating views by scan-converting all the primitives into an image, and then utilizes the continuity of the dispersal pixel in image to find the outline and the approximate minimum bounding rectangle (MBR) of each view efficiently. The precise MBR of each view is computed in graphics. Compared with other existing methods, the advantage of this method is regardless of how complex the combination of primitives and can automatically separate free numbers of orthographic views from a drawing.

Key words: interpretation of engineering drawing, orthographic views separation, image processing, view outline, 3D reconstruction

中图分类号: 

• TP391