Projective Volume Rendering by Selecting Voxels Based on Visibility
基于可见性选择体元的投影成像体绘制方法

It is efficient to accelerate volume rendering by avoiding compositing invisible voxels. As for this, a method is proposed in this paper to select voxels to render by the neighboring relation between voxels and the accumulated opacity at pixels, which can efficiently exclude invisible voxels in the rendering process. This method is suitable for both parallel and perspective projections, and it can treat both regular and irregular volumes.