摘要
在分析了基于传统金字塔模型组织瓦片地图数据方法的基础上,针对其在电子地图跨越尺度较小的情况下实时动态显示时出现画面内容显著跳跃及空间信息冗余的弊端,提出了一种改进的嵌套金字塔模型,并以双金字塔嵌套为例详细阐述了其设计原理及构建方法。实验证明,该方案充分继承了金字塔模型通过多细节层次展现丰富空间信息的优势,并有效提升了该模型在各尺度间切换时的连贯性,一定程度上补充和优化了基于预生成技术的瓦片地图数据组织方法,为金字塔模型的具体构建方式提供了一种新思路。
An improved nested pyramids model is proposed,and designing principles and constructing methods are elaborated while taking double pyramids nested as an example.The tests show that the program fully inherits the advantage that pyramid model demonstrates rich spatial information through multiple levels of details,and effectively enhances the coherence when switching among the scales in the model,also supplementing and optimizing the method in organizing tile map data based on pre-production technology to some extent,providing a new idea for a specific approach to construct pyramid model.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2011年第5期564-567,共4页
Geomatics and Information Science of Wuhan University
基金
国家973计划资助项目(2006CB701300)
国家863计划资助项目(2006AA12Z202)
