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一种基于OpenACC的遥感影像正射纠正快速实现方法
引用本文:莫德林,戴晨光,张振超,胡玲.一种基于OpenACC的遥感影像正射纠正快速实现方法[J].影像技术,2014(2):47-49,23.
作者姓名:莫德林  戴晨光  张振超  胡玲
作者单位:信息工程大学地理空间信息学院,郑州450001
摘    要:利用CUDA语言移植旧程序时需要重新设计算法,花费较多的时间,效率不高。针对这一问题,本文在分析正射纠正算法并行性的基础上,提出一种基于OpenACC的遥感影像正射纠正快速实现方法,并与基于CUDA的正射纠正方法进行对比。通过正射纠正实验表明,OpenACC能通过对源代码的较小改动将其移植到GPU中,获得一定的加速比,其可移植性好,代码开发效率较高。

关 键 词:OpenACC  CUDA  正射纠正  加速比

A Fast Implementation Method of Remote Sensing Image Ortho-rectification Based on OpenACC
MO De-lin,DAI Chen-guang,ZHANG Zhen-chao,HU Ling.A Fast Implementation Method of Remote Sensing Image Ortho-rectification Based on OpenACC[J].Image Technology,2014(2):47-49,23.
Authors:MO De-lin  DAI Chen-guang  ZHANG Zhen-chao  HU Ling
Institution:(Institude of Geospatial Information, Information Engineering University, Zhengzhou 450001, China)
Abstract:Algorithms need to be redesigned when using CUDA to transplant old programs, This will cost a long period of time, which leads to a low efficiency. Aiming at solving this problem, a fast implementation method of remote sensing image ortho-rectification based on OpenACC is proposed, and compared with ortho-rectification based on CUDA in this paper. Ortho-rectification experiments show that OpenACC can transplant program to the GPU with small changes, and get a speed up ratio. The portability is good, and the efficiency of code development is high.
Keywords:OpenACC  CUDA  Ortho-rectification  Accelerated ratio
本文献已被 CNKI 维普 等数据库收录!
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