逆向工程中多视角点云数据拼合技术

Technique of Multi-View Cloud Data Merging in Reverse Engineering

在反求工程中,往往需要将从各个不同视角测得的点云数据进行多视角定位,统一到一个整体坐标系下,并进行数据拼合以便于后续的模型重建。论文介绍采用标签定位来实现多视角测量和数据拼合的方法。这种方法通过不同扫描视图上公共参考点贴块的“中心点”进行坐标定位,把点云数据通过平移和旋转后进行拼合,从而方便快速地实现了两个不存在明确对应关系的点云视图之间的准确定位。

In reverse engineering, it is often necessary for the cloud data measured from different view angles to be reoriented by multi-view angle method, transformed into a global coordinate system and merged for the later reconstruction of an object model. This paper introduces a method for multi-view angle measurement and data merging, in which coordinates are reoriented by using central points on the common reference tabs in different views, data cloud are merged by translation and rotation, and finally the accurate reorientation between two data cloud views which have no evident corresponding relations is realized conveniently.