基于纹理的增强型3D流场绘制  

Enhanced Texture-Based 3D Flow Visualization

作　　者：周迪斌[1] 解利军[1] 郑耀[1] 

机构地区：[1]浙江大学工程与科学计算研究中心计算机科学与技术学院,杭州310027

出　　处：《计算机辅助设计与图形学学报》2009年第3期406-411,共6页Journal of Computer-Aided Design & Computer Graphics

基　　金：国家自然科学基金(10876036)

摘　　要：提出一种基于纹理的增强型3D矢量场可视化算法,可显著地改善传统纹理法的绘制质量.首先通过对3D纹理的线性卷积运算生成具有空间相关性的卷积纹理;然后对卷积纹理进行高通滤波,以增加流面内流线之间强度的对比;最后通过体绘制方式展示3D卷积纹理.借助权重区域,该算法可以显示用户感兴趣区域或特征区域,避免卷积数据过多引起的紊乱及相互遮挡.This paper presents an enhanced 3D flow visualization algorithm based on the 3D line integral convolution （LIC） and volume rendering techniques. Given an input 3D vector field, a 3D line integral convolution is at first performed to get a spatial-correlated texture. The resulting texture is then filtered with a 1D high-pass filter, resulting in high intensity contrast among the streamlines in the stream surfaces. An importance-driven volume rendering algorithm is employed to depict the interesting regions, and by which the distracting occlusions and visual clutter are effectively eliminated.

关 键 词：流场可视化 线性卷积 3D矢量场 体绘制 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]