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基于Tesla平台的快速反投影运算
引用本文:张峰,陆利忠,闫镔,李磊. 基于Tesla平台的快速反投影运算[J]. 计算机工程, 2011, 37(10): 275-277. DOI: 10.3969/j.issn.1000-3428.2011.10.095
作者姓名:张峰  陆利忠  闫镔  李磊
作者单位:解放军信息工程大学信息工程学院,郑州,450002
基金项目:国家"863"计划基金资助重点项目
摘    要:反投影运算是锥束CT图像重建算法中运算量最大,最耗时的部分,是制约重建速度的瓶颈。为此,在计算统一设备架构模型下,应用体素驱动法实现基于Tesla平台的反投影(BP)并行运算,并对BP运算上的访存和数学指令进行优化。实际CT数据的重建结果表明,该方法的运算速度是CPU串行程序的198倍,效率高且易于实现。

关 键 词:Tesla平台  反投影  图形处理单元  计算统一设备架构

Rapid Back Projection Operation Based on Tesla Platform
ZHANG Feng,LU Li-zhong,YAN Bin,LI Lei. Rapid Back Projection Operation Based on Tesla Platform[J]. Computer Engineering, 2011, 37(10): 275-277. DOI: 10.3969/j.issn.1000-3428.2011.10.095
Authors:ZHANG Feng  LU Li-zhong  YAN Bin  LI Lei
Affiliation:(Institute of Information Engineering,PLA University of Information Engineering,Zhengzhou 450002,China)
Abstract:Back Projection(BP) is the most time-consuming and sophisticated part of the most Cone Beam Computed Tomography(CBCT) reconstruction algorithms.It realizes BP parallel computing by using body element driving method under the model of CBCT,and optimizes memory access and mathematics instruction.The actual CT data reconstruction results indicate that the operation speed of this method is 198 times that CPU serial program,and it has high efficiency and easy implementation.
Keywords:Tesla platform  Back Projection(BP)  Graphics Processing Unit(GPU)  Compute Unified Device Architecture(CUDA)
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