摘要
嵌入式GIS系统有限硬件资源与地图数据的海量性和复杂处理过程相矛盾,采用缓存显示技术是有效提高嵌入式GIS地图显示速度的主要途径之一;围绕着嵌入式GIS平台上的实时地图显示、漫游和旋转性能,研究设计了一种多缓存地图显示方法,主要内容包括多缓存的体系结构、实现机理和虚屏缓存大小计算等。采用该方法,通过牺牲一定的内存资源换取显示速度的提高,其良好的显示性能已在某嵌入式GIS导航平台上得到验证。
The limited hardware resource is in contradiction with vast map data and complicated map data processing on an embedded GIS platform. Using buffer technique is a efficient software method to speed up map show. An new multi-buffer technique is studied and designed in this paper which includes architecture, mechanism and virtual screen memory size. The high efficiency of increasing show speed at the sacrifice of some memory volume is validated on some embedded GIS navigation ternimal.
出处
《信息工程大学学报》
2010年第3期317-321,共5页
Journal of Information Engineering University
基金
科研基金资助项目
