Segmentation using Geometric Feature

Abstract

Aiming at mesh segmentation applicable to reverse engineering, we propose a method to refine segmentation result of a simple and robust segmentation algorithm called variational shape approximation. In a process of reverse engineering, polygon data obtained from point group is first segmented and then parametric surface is pasted onto each region. Since variational shape approximation method only allows plane as geometric proxy of a surface region, a region representable with one or two parametric surface is often divided into several regions. Some works extend proxies to other primitive shape for refining segmentation. However, calculation cost increases to compute error metric for each shape and also smooth border can′t be obtained. In this paper, we solve these problems by using geometric features of each regions resulted from variational shape approximation and demonstrate its effectiveness with some example.