一种改进的基于Sobol序列的快速线积分卷积法

An improved algorithm of fast line integral convolution with Sobol sequence

为提高快速线积分卷积法(Sobol-FLIC)的计算效率和流线的覆盖率,提出了一种改进的基于Sobol序列的快速线积分卷积法。计算结果表明,与一般的快速线积分卷积法相比,改进后的算法计算效率提高了约10%,同时可以产生稀疏纹理和密纹理,并且采用二次LIC法对图像进行后处理提高了可视化效果。在Matlab环境中,该算法与几种基本算法(LIC,FLIC)的可视化效率、计算固定数目流线的可视化结果和图像覆盖率的比较结果证实了其优越性。

To enhance computation efficiency and coverage of streamlines of fast line integral convolution （ LIC）, an improved algorithm of fast LIC with Sobol sequence （Sobol-FLIC） was presented. The computation results show that compared with the traditional FLIC, the computation efficiency of the improved algorithm increases by approximately 10%, and it can generate sparse texture and dense texture simultaneously. Also the property of result image was improved using double LIC algorithm. Compared with some other methods including LIC and FLIC in Matlab environment, the visualization efficiency, the image coverage after calculating fixed number of streamlines of the improved algorithm is better.