[1]陈玉进,李 泉,柳 盛,等.面向嵌入式GIS的数据组织模型与存取机制[J].南京师范大学学报(工程技术版),2008,08(04):159-162.
　Chen Yujin,Li Quan,Liu Sheng,et al.Data Organization Model and Access Mechanism Facing Embedded GIS[J].Journal of Nanjing Normal University(Engineering and Technology),2008,08(04):159-162.
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面向嵌入式GIS的数据组织模型与存取机制
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南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
08卷
期数:
2008年04期
页码:
159-162
栏目:
出版日期:
2008-12-30

文章信息/Info

Title:
Data Organization Model and Access Mechanism Facing Embedded GIS
作者:
陈玉进1;  李  泉1;  柳  盛1;  2;  王春红1
1. 南京跬步科技有限公司, 江苏南京210008;
2. 南京师范大学虚拟地理环境教育部重点实验室, 江苏南京210046
Author(s):
Chen Yujin1; Li Quan1; Liu Sheng1; 2; Wang Chunhong1
1.Nanjing Creable Technology Co.,Ltd.Nanjing 210008,China;2.Key Laboratory of Virtual Geographic Environment of Ministry of Education,Nanjing Normal University,Nanjing 210046,China
关键词:
嵌入式GIS;  纵向分级;  网格索引;  H ilbert排序;  缓存
Keywords:
embedded GIS;  v ertica l g rade;  gr id index ing;  H ilbert so rt;  cache
分类号:
P208
摘要:
地图显示效率一直是嵌入式GIS系统的核心问题.一方面,嵌入式系统处理器性能低、内存容量小;另一方面,GIS数据量大、计算复杂.针对这一对突出的矛盾,本文提出了一种新的GIS数据组织模型与存取机制,在I/O阶段,从逻辑和物理2个层面最大限度地减少对冗余数据的读取和处理,保障地图的快速显示.
Abstract:
That the m ap show s effic iency has a lw ay s been the co re issue o f em bedded GIS system. On the one hand, embedded systems processors have low perform ance and low m em ory capac ity. On the o ther hand, G IS has large data vo lum e and com plex ity in ca lcu la tion. A im ing at th is pair o f outstand ing contrad ictions, the paper proposed a new org anizationa lm ode l and G IS data access m echan ism, in the I /O phase, from the log ical and physical leve ls, tom in im ize redundant data on the read ing and processing, and secure the rap id display of the m ap.

参考文献/References:

[ 1] 胡泽明, 岳春生, 王志刚. 嵌入式G IS系统实时响应的软件方法实现[ J]. 测绘科学, 2007, 32( 1): 98-99.
H u Zem ing, Yue Chunsheng, W ang Zh igang. The softw are m ethods rea liza tion to im prov ing rea-l tim e response in embedded G IS [ J]. Sc ience o f Surv ey ing andM apping, 2007, 32( 1): 98-99. ( in Ch inese)
[ 2] 夏颖, 张曙光, 张航. 空间数据检索在嵌入式G IS中的应用[ J]. 计算机应用, 2002, 22( 12): 119-123.
X ia Y in, Zhang Shuguang, Zhang H ang. App lication o f spatia l data index in embedded GIS [ J]. Com puter Applications,2002, 22( 12): 119-123. ( in Ch inese)
[ 3] Chen N ing tao, W ang Nengchao, Sh i Baochang. A new algorithm for encod ing and decod ing theH ilbert o rder[ J]. So ftware-Practice and Exper ience, 2007, 37( 8) : 897-908

备注/Memo

备注/Memo:
通讯联系人: 陈玉进, 硕士研究生, 研究方向: 嵌入式GIS 和数字图像处理. E-m ail: geochenyj@126. com
更新日期/Last Update: 2013-04-24