摘要
针对大数据量地图数据的快速调度与显示问题,提出了一种基于影像金字塔的GIS地图动态漫游算法。基于影像金字塔技术构建不同粒度的GIS地图数据分级影像,对影像数据进行分块,以实现大数据量地图的实时调度,采用数据链表对分层、分块数据进行组织和内存调度。测试及分析结果表明,与以往算法相比,该算法大幅减少了系统加载数据量,提高了大数据量地图的动态漫游速度。
Aiming at the problem of scheduling and display of large amounts of map data, a dynamic roaming algorithm based on the image pyramid is presented. First, a GIS map of the different particle size data is built based on image pyramid classification image, then making partitions of image to achieve real-time scheduling of the large amount of data map. Finally organizing and scheduling the hierarchical data and block data by data linked list. Test and analysis results show that the algorithm, which is compared to other well-known algorithms, has considerably reduces the amount of loading data and improves the dynamic roaming speed of a large amount of GIS data map.
出处
《计算机工程与设计》
CSCD
北大核心
2013年第5期1711-1715,共5页
Computer Engineering and Design
基金
2012年江苏省高校科研成果产业化推进化基金项目(JHB2012-36)
