基于GPU与Monte-Carlo的体绘制光线投射算法的研究

体绘制过程中等距离采样在显示效果不理想的情况下,每减少一个采样步长会增加大量采样点,大大增加了体绘制过程中的计算负担。针对这个问题,提出了一种基于Monte-Carlo积分方法的光线投射实现的实时体绘制算法,采用Monte-Carlo积分方法解决了光照明方程中的积分问题。实验结果表明,在显示效果几乎一样的前提下,采用本文的方法绘制效率提高了十多帧。

The research of volume raycasting based on GPU and Monte-Carlo

In the volume rendering process in which the equal step sampling is used when the display is not ideal, a large number of samples will increase when a sample step is reduced. It increases the data calculation in the volume rendering process greatly. For this problem, this paper proposes a method based on Monte-Carlo integration to achieve real time ray casting volume rendering. The paper uses the Monte-Carlo integration method to solve the integral equation in the light propagation. The experimental results show that when the premise of visual effect is almost the same, the method used in this paper would improve the efficiency in drawing more than ten frames.