对计算流动显示光线投射算法的改进

An Improvement in Algorithm for Computational Flow Imaging

计算流动显示是近年来在流体力学领域中出现的一个新的研究方向,是计算流体力学,实验流体力学,科学计算可视化等领域的结合.根据实验流体力学的光学流动显示原理,可以由计算流场生成计算流动显示图像,如干涉图、纹影图及阴影图.对原有的光线投射算法进行了改进,提出了一种速度更快、图像质量更好的计算流动显示算法.

Computational flow imaging is a new field of research in computational flow dynamics. It combines computational and experimental flow dynamics, together with visualization techniques. In this paper, we describe the basic principle of optical flow visualization in experimental flow dynamics and accord to this principle a method to construct interferomgram, schlieren, and shadowgragh by computational flow field is proposed. In the end we improve on the algorithm of ray tracing and give a new algorithm for computational flow imaging which has faster and better imaging.