基于GPU的B样条曲面加速计算  

Rapid Evaluation of B-spline Surfaces Using GPU

作　　者：黄鑫[1] 李胜[1] 程惠阁[1] 汪国平[1] 

机构地区：[1]北京大学信息科学技术学院人机交互与多媒体实验室,北京100871

出　　处：《系统仿真学报》2006年第z1期1-4,共4页Journal of System Simulation

基　　金：国家重点基础研究发展计划(973计划)(2004CB719403);国家自然科学基金项目(60473100;60573151)。

摘　　要：图形处理器(GPU)可编程性能的不断提高使得在三维几何造型系统中出现了越来越多的基于GPU的应用。提出了一个基于GPU片元程序计算B样条曲面的加速算法。通过测试算法在GPU上计算B样条曲面的时间与基于CPU的传统算法相比较,表明提出的基于GPU的加速算法效率明显高于传统算法。同时提出的算法具有良好的易用性和可扩展性,可以应用到Bézier曲面、NURBS曲面等其他参数曲面的加速计算中。Many GPU based applications in 3D geometric modeling system have been proposed along with the augmented programmable performance of Graphics Processing Unit (GPU). A new method of rapid evaluation of B-spline surfaces was proposed with GPU fragment program. The efficiency of the proposed GPU-based evaluating method was tested and compared with the traditional method. The results show that the efficiency of the proposed algorithm outperforms the traditional algorithm. The proposed scheme can also be applied to the evaluation of other parametric surfaces such as Bézier and NURBS surfaces, with its usability and extensibility.

关 键 词：B样条曲面 GPU 片元程序 加速计算 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]