摘要
该文针对利用GIS现有空间查询接口进行海量遥感栅格数据库空间可视化检索效率低下的问题。在深入研究海量遥感栅格数据库的空间可视化检索特点的基础上,提出了一种直接针对关系数据库(RDBMS)存储过程的高效的海量遥感栅格数据库复杂空间可视化检索算法,并对算法进行了多个级别的性能优化。该算法可直接应用于海量遥感栅格数据库基于多边形、椭圆和线穿越等复杂空间可视化查询的应用环境。实验结果说明该算法具有稳定性和普适性。
It is inefficient to visually retrieve image on magnanimous remote sensing raster image data base by some GIS spatial query interface. An efficient spatial visual retrieval algorithm aimed at directly storage procedure of Relational Data Base Management System （RDBMS） is described and optimized on performance on many levels in this paper after the character of magnanimous remote sensing raster image database spatial visual retrieval is studied in depth. This algorithm is implemented in a real application environment of magnanimous remote sensing raster image data base based on the spatial polygon query, ellipse query and line through query. The results of experiment demonstrate that this algorithm is stable and adaptable.
出处
《电子与信息学报》
EI
CSCD
北大核心
2006年第8期1463-1467,共5页
Journal of Electronics & Information Technology
基金
国家863计划(2003AA131152)资助课题
关键词
可视化检索
空间查询
查询优化
存储过程
Visual retrieval, Spatial query, Query optimization, Stored procedures
