Ray casting is a classic algorithm of Volume Rendering.

光线投射算法是体绘制中的经典方法。

Ray casting is a widely recognized method for high quality volume rendering.

光线投射是一种高质量的体绘制方法。

In this paper, three-dimensional seismic data field of direct volume rendering-Ray Casting Algorithm is mainly studied.

本文主要研究三维地震数据场的直接体绘制方法——光线投射算法。

Ray casting were stared out at every pixel on screen along viewpoint direction, and then some sample points were selected on the line.

其光线投射算法从屏幕上的每个像素点出发，沿设定视点方向，发出一条射线，沿该射线选择若干个等距采样点。

Sufficient experimentation shows that we could reach a good frame rate and a satisfied image quality, which could be compared to the result of ray casting.

充分的实验结果表明本文的算法达到了和传统光线投射算法相媲美的图像质量和相当高的绘制速度。