LIC纹理的GPU生成及边缘检测后优化处理  

The Implement of LIC Algorithm and Edge Detection Optimization Based on GPU

作　　者：徐华勋[1] 李思昆[1] 曾亮[1] 蔡勋[1] 

机构地区：[1]国防科学技术大学计算机学院,湖南长沙410073

出　　处：《系统仿真学报》2008年第S1期392-395,共4页Journal of System Simulation

基　　金：国家"九七三"重点基础研究发展规划项目(2002CB312105)资助;国家"863"项目资助(2006AA01Z309)

摘　　要：对基于GPU+GLSL的LIC算法实现的完整框架进行了明确、详细描述,提出了矢量场——纹理颜色分区映射的方法,充分利用顶点处理器和GPU顶点颜色插值的优势,将离散计算矢量场转换为连续的纹理数据场,并给出了LIC算法实现的相关核心片元程序,对基于GPU的LIC与传统方法的性能进行了对比;提出了基于GPU的边缘检测的LIC纹理后优化处理方法,采用冷暖光照模型进行处理,取得了较好的可视化效果。This paper presents an explicit and full detail about the implementation of LIC on the Graphics Processing Units (GPU).We introduce a mapping function which maps the velocity field with positive value and negative value to different segmentation of color space.In the transform process,we use the vertex color interpolation,which is an advantage of GPU, so the discrete velocity field of computation space can convert to continuous texture easily.We present the related fragment programs,and also some performance experiments.Based on the cool/warm illumination model,we finally use the edge detection method on GPU to improve the visual effect of the texture.

关 键 词：流场 线积分卷积 可视化 边缘检测 图形处理器 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]