江南, 曹亚妮, 赵军喜, 安敏. 不同密度区电子地图多尺度显示模型的建立与应用[J]. 武汉大学学报 ( 信息科学版), 2013, 38(4): 465-469.
引用本文: 江南, 曹亚妮, 赵军喜, 安敏. 不同密度区电子地图多尺度显示模型的建立与应用[J]. 武汉大学学报 ( 信息科学版), 2013, 38(4): 465-469.
JIANG Nan, CAO Yani, ZHAO Junxi, AN Min. Foundation and Application of Electronic Map Multi-scale Display Models of Different Density Areas[J]. Geomatics and Information Science of Wuhan University, 2013, 38(4): 465-469.
Citation: JIANG Nan, CAO Yani, ZHAO Junxi, AN Min. Foundation and Application of Electronic Map Multi-scale Display Models of Different Density Areas[J]. Geomatics and Information Science of Wuhan University, 2013, 38(4): 465-469.

不同密度区电子地图多尺度显示模型的建立与应用

Foundation and Application of Electronic Map Multi-scale Display Models of Different Density Areas

  • 摘要: 从实际应用出发,将地理区域划分为最密区、密集区、中密区和稀疏区4种类型,针对不同区域建立了适合其显示的电子地图多尺度显示模型。研究了基于RGB灰度值的地理区域类型自动判别方法,在定性分析和调查统计的基础上建立了基础地理要素显示分级体系。以我国中原某地区的电子地图为例进行了多尺度显示实验。

     

    Abstract: According to the application demands, we divide geographical areas into four kinds. They are densest area, dense area, moderate dense area and sparse area. Aiming at different areas, the multi-scale display models are built to adapt their characters. Then, automatic estimation methods of different density areas based on RGB value are studied. On the basis of qualitative analysis and survey statistic, a hierarchical basic geographical elements display system is built. At last, taking examples of electronic maps of the area of mid-China, multi-scale display experiments are carried out.

     

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