计算机科学 ›› 2020, Vol. 47 ›› Issue (11A): 236-240.doi: 10.11896/jsjkx.191100019
秦绪佳, 陈国富, 单扬洋, 郑红波, 张美玉
QIN Xu-jia, CHEN Guo-fu, SHAN Yang-yang, ZHENG Hong-bo, ZHANG Mei-yu
摘要： 流线可视化归属于几何可视化,以一种直观的方式把矢量场方向信息表现出来,是矢量场可视化的重要方法。文中提出了一种基于矢量场场强分布特征自适应选择颜色映射方式的流线着色方法,能更好地展示矢量场属性,显示矢量场场强信息;并推导了矢量场场强分布偏度系数计算公式。首先,利用Sobol序列来确定流线种子点位置,根据种子点生成流线。然后,对矢量场场强数据集进行偏度系数计算,并与阈值比较后选择合适的颜色映射方式对流线着色。实验结果表明,使用Sobol序列确定流线种子点位置,能使矢量场流线分布更为均匀;将矢量场数据分布量化为偏度系数,根据偏度系数选择更为恰当的颜色映射方式,让颜色映射的效果更好地描述矢量场场强大小分布的实际情况.
中图分类号:
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