心内膜三维几何模型交互式网格切割算法研究  

ON INTERACTIVE MESH CUTTING METHOD FOR 3D ENDOCARDIAL GEOMETRIC MODEL

作　　者：周学礼[1,2,3] 万旺根[1,3] 王亚男[1,3] 李金博[1,3] 

机构地区：[1]上海大学通信与信息工程学院,上海200072 [2]常熟理工学院物理与电子工程学院,江苏常熟215500 [3]上海大学智慧城市研究院,上海200072

出　　处：《计算机应用与软件》2014年第10期197-201,219,共6页Computer Applications and Software

基　　金：国家自然科学基金项目(61103076);上海市教委"电路与系统"重点学科建设项目(J50104)

摘　　要：针对心内膜三维标测系统中心内膜模型网格切割模块,提出一种新的交互式网格切割算法。系统在载入心内膜三维几何模型后初始化切割平板模型,由用户交互移动切割平板和旋转切割平板的法线。借助矩阵变换,针对心内膜三维几何模型实现能反映用户切割意图和保持网格细节特征的网格切割,而且切割平板可以消除锯齿效应。实验对比结果证明,该算法对于心内膜三维几何模型可以实现令用户满意的实时无锯齿交互式网格切割。For the mesh cutting module of endocardial model in endocardial 3D mapping system, we present a new interactive mesh cutting algorithm. The system initialises the cutting plane model after the 3D endocardial geometric model is loaded, then the cutting plane and the normal line of cutting plane are moved and rotated by the user interactively. With the help of matrix transformation, the mesh cutting which reflects user’s cutting intention while preserves the feature of mesh details is implemented aiming at the 3D endocardial geometric model. Moreover, the cutting plane can eliminate the sawtooth effect. Experimental contrasting result shows that this algorithm can achieve real-time non-serrated interactive mesh cutting with user satisfaction for 3D endocardial geometric model.

关 键 词：网格切割 切割平板 矩阵变换 锯齿效应 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]