Parallel construction of global pyramid for large remote sensing images

	Parallel construction of global pyramid for large remote sensing images
	Liu, Po 1; Gong, Jianhua 1
刊名	Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University
	2016
卷号	41 期号:1 页码:117-122
英文摘要	The pyramid model is the basis for visualization and processing of massive remote sensing data in a virtual globe system. It produces large amounts of data tiles in the process of building pyramids however, and the traditional serial CPU algorithm has difficulties satisfying requests for large images. This paper proposes a parallel global pyramid approach that exploits GPU capabilities and multi-threading to enable memory-intensive and computation-intensive tasks. A two-level decomposition strategy was developed to migrate the performance bottlenecks in data transfers among the GPU, CPU, and disk. A multi-threading strategy was used to reduce the delay between CPU and disk, and pin-memory for GPU global delay. Finally, the GPU is used to complete large-scale parallel resample computing and constructing an octree structure used to maximize reuse of data in the graphic memory. Experimental results show that the proposed method can significantly improve pyramid construction speed for large remote sensing images. © 2016, Wuhan University. All right reserved.
收录类别	EI
语种	中文
WOS记录号	WOS:20160501858824
内容类型	期刊论文
源URL	[http://ir.radi.ac.cn/handle/183411/39646]
专题	遥感与数字地球研究所_SCI/EI期刊论文_期刊论文
作者单位	1. Chinese Academy of Surveying and Mapping, Beijing, China 2. State Key Laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Liu, Po,Gong, Jianhua. Parallel construction of global pyramid for large remote sensing images[J]. Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University,2016,41(1):117-122.
APA	Liu, Po,&Gong, Jianhua.(2016).Parallel construction of global pyramid for large remote sensing images.Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University,41(1),117-122.
MLA	Liu, Po,et al."Parallel construction of global pyramid for large remote sensing images".Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University 41.1(2016):117-122.