一种基于区域分割的几何模型简化方法

根据几何模型简化中保持细节特征的要求,引入了图像的区域分割原理,提出了一种利用曲度进行区域生长的网格模型区域分割方法,用A型种子或B型种子进行生长,将模型分割为一些区域;在此基础之上,提出了一种基于区域分割的几何模型简化方法,各个区域按照三角形数目的比例进行简化.该方法在保持模型细节特征的基础之上,大大地加快了模型简化的速度;另外还提出了一种累进网格模型的实现方法,实现了具有细节特征的多分辨模型间的层次过渡.实验证明本文所提出的几何模型简化方法加快了网格模型的简化速度,并具有保持模型的三角形网格密度分布的特点,是一种实用、方便和有效的简化方法.

A Geometric Model Simplification Method Based on Regions Partition

To meet the requirement of detail preserving in geometric model simplification,regions partition principle of image is inducted and a method of triangle mesh region partition using curvedness is put forward.Model is partitioned some regions using seed of A type or B type.On this basis,a geometric model simplification method based on regions partition is put forward.Model is simplified according regions' triangles proportion.This method can make the simplification faster while remaining the model's detail.In this paper,a progressive mesh model is also put forward and it can realize the layer's transition while preserving detail.It is verified that this simplification method can accelerate mesh model simplified rate and has the features of maintaining triangular density distribution.So it is a practical,convenient and effective simplification(method).