真实感海洋场景实时建模与绘制研究进展

Research progress in real time modeling and rendering for realistic ocean scene

真实感海洋场景再现是数字海洋的研究热点,海洋建模和绘制的实时化是关键难题,海洋的大尺度和高动态行为特征是困难的主要来源。首先,回顾海洋建模中经验模型与物理模型的历史演化过程,分析深海区域建模的空间域方法、频域方法及混合方法的特征,比较近岸海域建模的欧拉方法、拉格朗日方法、格子玻尔兹曼方法的特性,归纳近年来海洋建模方法的研究动态;其次,在增强海洋细节真实感方面,总结泡沫、喷溅以及光水交互等现象再现手段的研究成果;然后,从物理建模和绘制方法着手,梳理当前重建固液交互复杂现象所面临的理论和技术难点;最后,结合多年研究实践,指出真实感海洋场景实时再现需要进一步克服的困难及有潜力的研究策略。

The reproduction of ocean scene is an important research focus in the digital ocean. In particular, the real-time modeling and rendering for the ocean surface are the most important issues. The ocean＇ s large-scale and its high dynamic behavioral characteristics are the main origins. Firstly,this paper reviews the historical evolution of empirical models and physical models in ocean modeling. The typical methods used in deep-ocean domain modeling and in coastal domain modeling are classified,analyzed and compared respectively. Based on these summarizations,the state-of-the-art research in ocean modeling is presented. Secondly,this paper surveys the research achievements in scene reproduction,which enhanced the reality of ocean details,from bubbles and splashes to the light-water interaction,etc. The theoretical and technical difficulties in reconstructing complex phenomenon of solidliquid interaction are sorted out from physical modeling methods and rendering methods. The difficulties and potential research strategies in realistic ocean scene real-time reproduction are finally pointed out according to our research experiences.