一种基于分形的海浪视景仿真方法

Fractal-based Ocean Wave Model for Visual Simulation

鉴于目前的海浪视景仿真模型要么逼真性不好、要么实时性较差的现状,提出了一种基于分形的海浪视景仿真方法,即以简单三维进行波为基本波形,采用地形模拟中的连续随机增加法对基本波形进行变形,同时为了保证图像的连续性采用了多重插值的方法。该方法能够很好的体现海浪的随机性,具有较好的逼真性和实时性,且容易构造视点相关的LOD模型。

The existing visual ocean wave simulation models, such as computational fluid dynamics method, linear superposition and linear filtering method based on wave spectrum, geometry construct method and texture-based method are either computation expensive or less realistic. A fractal based ocean wave model was proposed. The simple 3D propagating wave model was used to generate the basic wave shape, and then this basic wave shape was deformed with the successive random addition method. To keep the continuity of wave shape, positions of different time were interpolated. The simulation result shows that this method can generate realistic wave shapes and is less time expensive and easy to build view dependent LOD model.