【摘要】 针对三角形网格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,提出了一种基于区域生长的网格模型区域分割方法.在此基础之上,提出了一种基于多区域并行的自适应三角网格模型简化的两步法,对于不同的区域采取按照比例进行简化的并行机制.此方法的特点是保持模型细节的基础上,大大地加快了模型的简化速度.另外,还提出了一种基于多区域并行的累进网格模型的实现方法,有效地实现了保持细节特征的多分辨率模型,并实现了具有细节特征的多分辨模型间的层次过渡.经实验证明,该方法能够快速有效地对三角形网格模型进行简化,并具有保持模型的三角形网格密度分布的特点.更多还原

【Abstract】 To meet the requirements of detail preservation in triangular model simplification,region segmentation principle of image is introduced,and a region segmentation method of mesh model is put forward based on region growth.A two-step adaptive method for simplifying triangle meshes based on multi-region paralleling is presented,which performs simplification proportionally over different regions,and makes the simplification much faster while preserving the details.A multi-region-paralleling-based implementation method of progressive mesh model is also proposed,which can obtain multi-resolution models that preserve the details effectively,and can realize the layer transition of those models.It is verified experimentally that this method can simplify triangle mesh model effectively,and has the characteristics of maintaining density distribution of triangle meshes.更多还原