内窥镜图像实时动态流血合成与仿真

Real-time Dynamic Bleeding Synthesis and Simulation of Endoscopic Images

为了满足内窥镜手术虚拟训练过程中流血仿真的实时性和视觉效果上的逼真性,采用计算流体力学建模方法提出了一种实时的动态流血合成与仿真模型;利用定常、温度不变的不可压缩Navier-Stokes方程组构造流血仿真的模型,并用OpenGL实现了流血的实时模拟,给出了在OpenGL环境下的内窥镜图像的实时动态流血合成与仿真的效果图。实验结果表明,利用该方法模拟的流血效果真实感强,对内窥镜手术训练有很大的帮助。

A real time dynamic bleeding synthesis and simulation model based on computational fluid dynamics is proposed, which aims at realistic simulation of bleeding in the endoscopic surgical training systems based on virtual reality. Navier-Stokes equations are adopted to simulate blood flow as an incompressible fluid. A faster solution to Navier-Stokes equations is employed to solve the density field and velocity field in order to develop a real-time system. In light of this solution, a prototype of bleeding model with OpenGL was implemented. The results show that this method applied to the bleeding simulation is elucidating and practical.