高技术通讯
高技術通訊
고기술통신
HIGH TECHNOLOGY LETTERS
2010年
3期
314-319
,共6页
虚拟牙科手术%仿真%钻削%体素%重构
虛擬牙科手術%倣真%鑽削%體素%重構
허의아과수술%방진%찬삭%체소%중구
virtual dental surgery%simulation%drilling%voxel%reconstruction
通过分析虚拟牙齿钻削手术对模型的要求,建立了基于线性表的均匀立方体体素网格模型,设计了材料去除与模型重构算法,实时模拟钻削中模型的拓扑结构变化,并采用点绘制方法进行图形显示.采用0.1mm的剖分粒度进行实验,证明牙齿体素模型的实时性可以满足1kHz的力觉反馈和30Hz的图形显示要求,设计的模型重构算法可以较精确地实现多种不同尺寸工具的钻削仿真.
通過分析虛擬牙齒鑽削手術對模型的要求,建立瞭基于線性錶的均勻立方體體素網格模型,設計瞭材料去除與模型重構算法,實時模擬鑽削中模型的拓撲結構變化,併採用點繪製方法進行圖形顯示.採用0.1mm的剖分粒度進行實驗,證明牙齒體素模型的實時性可以滿足1kHz的力覺反饋和30Hz的圖形顯示要求,設計的模型重構算法可以較精確地實現多種不同呎吋工具的鑽削倣真.
통과분석허의아치찬삭수술대모형적요구,건립료기우선성표적균균립방체체소망격모형,설계료재료거제여모형중구산법,실시모의찬삭중모형적탁복결구변화,병채용점회제방법진행도형현시.채용0.1mm적부분립도진행실험,증명아치체소모형적실시성가이만족1kHz적력각반궤화30Hz적도형현시요구,설계적모형중구산법가이교정학지실현다충불동척촌공구적찬삭방진.
This paper establishes a linear list-based uniform cube-voxel model through the analysis of the requirements of virtual teeth drilling operation modeling. A material removal and reconstruction algorithm is designed for real-time simulation of topology update caused by drilling operation and point-based rendering is used for image processing. The experimental results show that the model decomposed by 0.1mm could well satisfy the demand of the force feedback frequency of 1kHz and the model reconstruction frequency of 30Hz. At the same time, the model reconstruction algorithm can precisely simulate various drilling tools in different sizes.
