摘要
研究虚拟手术系统中皮肤表面血流三维可视化问题。在以往的研究中,多数集中于血液在光滑皮肤表面流动的研究,而对皮肤表面粗糙度考虑甚少,导致真实性低的问题。为解决真实性问题,提出一种改进牛顿流体控制方程外力项的方法,将皮肤表面粗糙度的影响量化为摩擦力后附加在控制方程的外力项上,提高仿真的真实性。模型渲染时使用改进的Marching Cubes等值面构造算法来进行绘制,提高仿真的实时性。实验结果表明,改进方法能够很好地体现出皮肤表面粗糙度对血液流动的影响。
In this paper, 3D visualization of skin surface blood flow in virtual operation system was studied. In previous studies, the majority focused on blood flowing on the smooth surface, the skin surface roughness considered little, lead to the problem of low authenticity. To this end, this paper presents a methodof improving the external forces of Newton fluid control equations. Skin surface roughness is quantized as friction, as an additional external force in governing equations, increasing the reality of simulation. Model rendering uses the improved Marching Cubes algorithm to enhance the real - time performance. The experimental resuhs show that this method can well reflect the imoact of skin surface roughness on the skin blood flowinz.
出处
《计算机仿真》
CSCD
北大核心
2015年第4期414-418,423,共6页
Computer Simulation
