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標題: 新的天空雲層模擬演算法
作者: 王宗銘 
關鍵字: 雲層模擬;取樣演算法;擾動演算法;粒子系統;體積重建;即時互動
出版社: 國立中興大學工學院;Airiti Press Inc.
Project: 興大工程學刊, Volume 14, Issue 3, Page(s) 171-186.
In this paper, we present novel algorithms to realistically simulate clouds in the sky. We introduce two sampling algorithms, “ellipsoid amassment” and “sampling”, generating particles to control the shape of the clouds. For realistic rendering we employ a spaltting algorithm and propose a disturbing algorithm. Experimental results show that the proposed sampling algorithms can efficiently simulate the shape of clouds analogous to those shown in a given real image. We can also simulate clouds with interesting shapes such as animals and hearts. When observing at a fixed viewpoint, the disturbing algorithm effectively changes the radii of particles bringing out real-time and dynamic visual effects. Finally, the system can render clouds with more than 10 FPS performance in a general middle-end PC, achieving real-time display and dynamic interaction of the simulation results. In conclusion, the proposed algorithms demonstrate their simulation feasibility in modeling cloud shapes, producing visual effects, and performing real-time interaction.

ISSN: 1017-4397
Appears in Collections:第14卷 第3期

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