基于纹理映射和GPU的焦点区域体绘制  

Focal Region Based Volume Rendering by Texture Mapping and GPU Based Approach

作　　者：周建龙[1] 王知衍[1] 肖春[2] 

机构地区：[1]华南理工大学计算机科学与工程学院,广州510640 [2]湘潭大学信息工程学院,湘潭411105

出　　处：《计算机辅助设计与图形学学报》2008年第1期32-37,共6页Journal of Computer-Aided Design & Computer Graphics

基　　金：湘潭大学科研项目(05QDZ25)

摘　　要：利用图形硬件的纹理映射和可编程GPU功能,高效实现基于焦点区域的体绘制.使用模板缓存检测机制把体数据标记为3个不同的区域,然后对标记区域使用基于纹理映射的方法分别绘制;同时使用基于GPU方法实现了周围区域的体轮廓绘制以及体绘制中多个转换函数的指定过程.文中方法使得体绘制系统实现容易、可扩展性好.This paper presents an approach of using texture mapping and GPU based method for realizing focal region based volume rendering. The proposed method first labels the volumetric data into three parts based on the mechanism of stencil buffer test. Then the data model is rendered using texture mapping method. The approach also adopts GPU-based method to render the context region with volume silhouettes, and also realize the multiple transfer function specification process based on pixel transfer function. The proposed method shows its good performance in the implementation and function extension.

关 键 词：体视化 焦点区域 纹理映射 图形处理单元 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]