时变体数据传输函数设计及其在行星际数值模拟结果可视化中的应用
为便于太阳风暴行星际传播数值模型结果可视化分析,提出一种针对时变模拟数据体绘制的传输函数设计算法(Transfer Function for Time-varying Volume data,TFTV)。该算法首先基于KNN(K-Nearest Neighbors,KNN)背景差分法提取运动区域;然后,利用频率调谐(Frequency Tuned,FT)显著性算法检测日冕物质抛射(Coronal Mass Ejection,CME),并设计颜色反映射算法查找CME与背景的分界阈值;最后,基于阈值自适应调整传输函数实现各时间步上运动区域中CME的快速三维可视化。实验结果表明,该算法能够适应静态及...
Main Authors: | 祝 艳, 钟 鼎坤 |
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Format: | Article |
Language: | English |
Published: |
Science Press
2023-07-01
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Series: | Kongjian kexue xuebao |
Subjects: | |
Online Access: | https://www.sciengine.com/doi/10.11728/cjss2023.03.2022-0011 |
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