计算机工程2012，Vol.38Issue(22)：251-254,259,5.
基于状态空间预计算的软组织实时形变模型
Real-time Soft Tissue Deformable Model Based on State Space Precomputation
摘要
Abstract
In order to improve the computational efficiency of the Hybrid Soft Tissue Deformable Model(HSTDM), a Precomputation-based Hybrid Soft Tissue Deformable Model(P-HSTDM) is proposed. The proposed model uses HSTDM model to obtain the exact discrete state space data by offline precomputation, then the smoothed particle hydrodynamics interpolation function is used to calculate the force feedback and the offset value of deformation node in real-time interaction. Simulation results show that P-HSTDM model can describe linear, nonlinear and anisotropic material properties of the soft tissue, and provide the refresh rate of visual and force feedback above 60 Hz and 500 Hz, respectively.关键词
虚拟手术仿真/形变模型/应变能函数/状态空间/光滑粒子流/预计算Key words
virtual surgery simulation/ deformable model/ Strain Energy Function(SEF)/ state space/ Smoothed Particle Hydrodynamics(SPH)/ precomputation分类
信息技术与安全科学引用本文复制引用
徐少平,刘小平,李春泉,罗洁,江顺亮..基于状态空间预计算的软组织实时形变模型[J].计算机工程,2012,38(22):251-254,259,5.基金项目
国家自然科学基金资助项目(61163023,61175072) （61163023,61175072）
江西省自然科学基金资助项目(20114BAB211024,2010GQS0154) （20114BAB211024,2010GQS0154）
江西省教育厅科技计划基金资助项目(GJJ11284,GJJ12133) （GJJ11284,GJJ12133）
江西省教育厅省级教改基金资助项目(JXJG12124) （JXJG12124）
