An improved distributed storage model of remote sensing images based on the HDFS and pyramid structure

An improved distributed storage model of remote sensing images based on the HDFS and pyramid structure
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基于HDFS和金字塔结构的改进遥感影像分布式存储模型

DOI:
10.1504/ijcat.2019.098037
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发表时间:
2019-03
影响因子:
1.1
通讯作者:
Nihong Wang
Nihong Wang
中科院分区:
--
文献类型:
--
作者:
Linhui Li;Weipeng Jing;Nihong Wang

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随着遥感数据量的快速增长,数据管理需要采用新的架构。在某些领域进行了一些改进。例如,Hadoop 分布式文件系统(HDFS)可用于大文件。然而,在基于金字塔的结构中存储遥感图像时会产生小文件。在本文中,我们提出了一种基于带有MapFile的Hadoop系统的方法。该方法是一种改进的存储模型,可实现高效存储,并允许访问 HDFS 上的小文件。所提出的方法将小文件合并到MapFile序列化容器中,并减少了小文件的数量。元数据传感器信息存储在索引中以提高搜索速度。结果证明了使用金字塔模型进行遥感图像处理的效率以及与 HDFS、HDWebGIS 和 Hadoop 档案相比减少的执行时间。
With the rapidly growing amount of remote sensing data, data management needs to adopt a new architecture. Some improvements have been made in some areas. For example, the Hadoop distributed file system (HDFS) can be utilised for large files. However, small files will be produced when storing remote sensing images in the pyramid-based structure. In this paper, we propose a method based on the Hadoop system with MapFile. The method is an improved storage model for efficient storage and allows for access of the small files on the HDFS. The proposed method combines small files into the MapFile serialised container, and it reduces the number of small files. The metadata sensor information is stored in the index to improve the search speed. Results demonstrate the efficiency of remote sensing image processing using the pyramid model and the reduced execution time compared with the HDFS, HDWebGIS and Hadoop archives.
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发表时间: 2012-08
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影响因子: --
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