基于网格分割的带纹理模型细节保持化简方法  

Grid-Segmentation-Based Textured Model Simplification

作　　者：薛冰[1] 王莉莉[1] 沈哲[1] 

机构地区：[1]北京航空航天大学计算机学院虚拟现实技术与系统国家重点实验室,北京100191

出　　处：《计算机辅助设计与图形学学报》2010年第12期2111-2118,共8页Journal of Computer-Aided Design & Computer Graphics

基　　金：北京市科技新星计划(2009B09)

摘　　要：针对带纹理模型化简过程容易造成细节丢失的问题,提出一种基于网格分割的化简方法.在预处理过程中,根据模型的纹理、法线等外观属性将几何模型划分为若干子网格,使子网格之间的相关性降低,并在子网格内部执行边折叠化简操作,最后将化简后的结果合并并进行补缝处理,形成完整的化简模型.由于采用了外观属性信息对模型的高频部分加以分离,减少了细节区域的信息丢失,使得在保持模型轮廓的同时较好地保持了模型的几何细节和外观属性.实验结果表明,文中方法是有效的.To solve the problem that loss of details in the process of textured meshes simplification,we propose a grid-segmentation-based simplification method.Specifically,we partition the meshes based on the properties of appearance,such as textures and normal in the pretreatment process.The metric is computed for the edge collapse and the mesh is simplified.At last we merge the results and fixed the gap to regain a mesh.By separating the high-frequency part of the mesh with the properties of the appearance,more details can be kept in the process of simplification.Thus we find a better way to keep the geometry details and appearance attributes of the model.Experiments show the effectiveness of the proposed approach.

关 键 词：模型化简 网格分割 细节保持 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]