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双峰型电子地图载负量变化规律的探究

江南1,孙庆辉曹亚妮3,张昊4 谷宇航   

  • 收稿日期:2012-10-17 修回日期:2014-01-14 出版日期:2014-03-20 发布日期:2014-01-15
  • 通讯作者: 江南
  • 基金资助:

    高分辨率遥感影像的语义信息提取;天基综合信息网中的时间同步研究

Research and Application of Two-peak Changing Law of Electronic Map Load

  • Received:2012-10-17 Revised:2014-01-14 Online:2014-03-20 Published:2014-01-15

摘要:

电子地图载负量是影响电子地图多尺度显示清晰性、平滑性和层次性的重要因素,也是多尺度显示模型建立的重要指标,因此,对电子地图载负量的研究具有重要意义。文章分析了电子地图与纸质地图载负量变化规律的差异性;采用基于RGB值的方法获取了大量的电子地图载负量数据,在此基础上对其变化规律进行了研究,探索出了双峰型电子地图载负量变化规律,并对双峰型电子地图载负量变化曲线形态、影响因素等进行了深入探讨;最后,基于双峰型电子地图载负量变化规律,建立了较为科学实用的电子地图多尺度显示模型,取得了较好的实验效果。

关键词: 电子地图, 载负量, 双峰型地图载负量模型, 多尺度显示模型, S型曲线载负量模型

Abstract:

Electronic map load is one of the most important factors that influence the clarity, smooth and gradation of the multi-scale display; and it is also an important indicator in multi-scale representation modeling. All of these make the research of electronic map load more significance. This article analyzed differences of the map load variation between paper map and electronic map; using RGB values-based approach to obtain a large number of electronic map data; explored two-peak changing law of electronic map load by making further research; discussed the curve shape and influencing factor of two-peak changing law of electronic map load. In the end, it established a more scientific and practical electronic map multi-scale model, and this achieved a preferable experiment results.

Key words: Electronic Map, Map Load, Two-peak Changing Model of Map Load, Multi-Scale Display Model, S-Style Curve Model of Map Load

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