Ray casting algorithm的意思|示意

Ray casting is an important algorithm in direct volume rendering, but it has the disadvantages of the large amount of computation and inefficient computation of sampling-points.

光线投射法是一种重要的体绘制算法，但直线上采样点的确定和采样值计算是非常费时的，也是影响体绘制实时性的重要因素。

The method applied space objects bounding box tracking algorithm to reduce the amount of light, and improved ray casting algorithm to speed up the rendering speed.

该方法利用物体空间的包围体算法来减少追踪光线的数量，加快了绘制速度。

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。

Finally, the processed water and seafloor data is combined, and then the visualization of SAS volume data is achieved by the ray casting algorithm of direct volume rendering.

最后，将处理后的水体和地层数据合并，并通过直接体绘制中的光线投射算法有效地实现了水声体数据的三维可视化。

A single-pass ray-casting algorithm is developed based on GPU(graphics processing unit), and on the basis of this algorithm an accelerated algorithm is proposed based on space leaping technique.

实现了一种基于图形处理器的单步光线投射算法，并在此基础上提出了一种基于空间跳跃技术的光线投射算法，以实现加速。

The author proposes a view selection method for volume rendering algorithm. It combines the formulation of entropy with the ray-casting algorithm to objectively evaluate the quality of view.

作者提出了一种视图选择方法，它将信息熵公式与光投射算法结合在一起能够对体绘制中所选视图质量的优劣做出客观的评价。