[1]宋娟,张宏.基于海量存储的三维地理信息系统应用与研究[J].计算机技术与发展,2018,28(05):144-148.[doi:10.3969/j.issn.1673-629X.2018.05.033]
 SONG Juan,ZHANG Hong.Application and Research of Three Geographic Information System Based on Mass Storage[J].,2018,28(05):144-148.[doi:10.3969/j.issn.1673-629X.2018.05.033]
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基于海量存储的三维地理信息系统应用与研究()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
28
期数:
2018年05期
页码:
144-148
栏目:
应用开发研究
出版日期:
2018-05-10

文章信息/Info

Title:
Application and Research of Three Geographic Information System Based on Mass Storage
文章编号:
1673-629X(2018)05-0144-05
作者:
宋娟张宏
哈尔滨理工大学 计算机科学与技术学院,黑龙江 哈尔滨 150080
Author(s):
SONG JuanZHANG Hong
School of Computer Science and Technology,Harbin University of Science and Technology,Harbin 150080,China
关键词:
多线程缓冲区机制海量地形数据金字塔模型纹理映射
Keywords:
multi-threadingbuffer mechanismmassive terrain datapyramid modeltexture mapping
分类号:
TP302
DOI:
10.3969/j.issn.1673-629X.2018.05.033
文献标志码:
A
摘要:
针对海量地形数据存储空间大的瓶颈,提出了基于视域改进的 LRU 算法。为了实时提供基础的地理信息以及现场分布情况,支持海量地形数据存取,算法利用基础数据的大数据量、多数据源、多分辨率等特点,采用分页数据库组织、四叉树结构的 LOD 瓦片组织算法,构建金字塔三维模型;同时,采用动态调度、多缓冲多线程并行处理的方法,实现了多重纹理快速映射地形,达到了海量地形数据快速存取的效果。算法中海量数据存储方便,数据检索查询快速,配置要求低。系统实时提供基础地理信息、现场分布情况,支持海量数据和复杂图形符号,在使用过程中,使用者可直观地观察地图信息,根据实时传递的场景地形地貌进行分析,速度快可靠性高,提高了使用者的工作效率。
Abstract:
Aiming at the bottleneck of massive terrain data storage space,we propose a LRU algorithm based on improved horizon.In order to provide basic geographic information and field distribution in real time and support the accessing of massive terrain data,based on the basic data of large volume,multi-source and multi-resolution,the algorithm uses the LOD tile organization algorithm with the paging database organization and four-tree structure to construct the pyramid 3D model.At the same time,it utilizes the method of dynamic
scheduling and multi-buffering multi-thread parallel processing to achieve a multi-texture rapid mapping terrain,which finishes the fast accessing of the massive terrain data.In the algorithm,the mass data storage is convenient,the data retrieval query is quick and the configuration requirement is low.The system provides the real-time basic geographic information and field distribution and supports the massive data and complex graphical symbols.In the course,the user can visually observe the map information and analyze it according to real-time transmission of terrain topography,with fast speed and high reliability,rising the user’s work efficiency.

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更新日期/Last Update: 2018-07-06