基于噪声纹理的云层绘制方法  

Method of Plotting Clouds Based on Noise-Texture Operator

作　　者：杨丹[1] 汤晓安[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《现代电子技术》2009年第20期40-41,共2页Modern Electronics Technique

基　　金：国家863高技术计划资助项目(2003AA134010)

摘　　要：针对港口三维监控系统中云绘制的特点,分析云绘制的逼真度和实时性需求,研究相应的云绘制方法,提出一种基于噪声纹理的云层绘制方法。该方法采用基于纹理构造云模型,降低了所需绘制的几何数据;采用设置纹理重复模式,实时更改纹理矩阵,实现云层运动的效果,采用多纹理技术将两张噪声纹理成一定角度叠加,实现云自身形态的连续变化。通过该方法绘制了港口三维监控系统云层,具有较强的三维虚拟现实的真实感。实验结果表明,该方法可显著提高云绘制效率,显示效果令人信服。Aiming at the features of plotting clouds in the port three -dimensional monitoring system, the fidelity and timeliness requirements of plotting clouds are analysed, the method of corresponding plotting clouds is researched, a method of plotting clouds based on a noise - texture operator is put forward. This method uses cloud model based on texture and reduces the geometry data , sets texture repeat mode, changes the texture of real - time matrix and realizes the cloud layer movement effect. Using the multi - texture technology superimposes two noise textures according to a certain point of view and realizes the cloud continual change. In this way, plot clouds of the port three-dimensional monitoring system and the realistic of three - dimensional virtual reality is enhanced. Experiments demonstrate that the method could improve efficiency of plotting clouds, so the effect of display is convinced.

关 键 词：三维监控系统 云绘制 噪声纹理 多纹理 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]