医学图像大体数据快速体绘制算法研究

为了在保证绘制质量的前提下有效提高大的医学体数据的绘制速度，提出了一种快速的体绘制算法。该算法将大的体数据分割成等大小的数据块，然后通过对每一数据块进行空白数据块的空间跳跃、提前数据块截止和提前光线截止的可见性测试来加快体绘制的速度，最后使用体绘制预积分来提高体绘制的图像质量。实验结果表明，对大的体数据，可以在不损失图像质量的前提下，实现快速的绘制。

Research on Fast Volume Rendering of Medical Image with Large Volume Data

In order to do fast volume rendering for a large medical volume data and meanwhile assure the quality of rendering, a fast volume rendering method was presented. Firstly, the large medical volume data was divided into equal-size blocks, and then a set of visibility tests such as empty block space skipping, early block termination and early ray termination were used to speed up the whole rendering process. Finally,volume rendering prcintegration was utilized to improve the performance of volume rendering. The experiment results show that the proposed fast volume rendering has picked up the speed of rendering for a large medical volume data without loss of image quality.