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    • 1. 发明授权
    • Apparatus for preparing map data with regional properties
    • 用于准备具有区域属性的地图数据的设备
    • US5377102A
    • 1994-12-27
    • US25984
    • 1993-03-03
    • Kenji Nishiishigaki
    • Kenji Nishiishigaki
    • G06T3/00G06T17/05G09B29/00G06F15/62
    • G06T3/0081G06T17/05G09B29/007
    • The line-data generating unit of this apparatus automatically reads a map image through an image scanner, generates a digital-image signal in a pattern-recognition module, prepares line data in a line-data image processing unit, and stores the line data in RAM (I). A data converter retrieves the line data from the line-data generating unit, prepares plane data, and issues the plane data to a property-data preparation unit. Through a closed-area-data image processing unit, the property-information preparation unit, based on instructions input from a keyboard, interpolates points of discontinuity in the plane data; assigns properties corresponding to such points, and prints the output. RAM (II) stores completed data. The interpolation of points of discontinuity in the plane data is performed jointly and simultaneously by input terminals PCi (i=1, 2, . . . , n). Using this method, accurate plane data can be easily and rapidly prepared by reading an original topographical map or the like so that vector line-data is transformed into plane data whose points of discontinuity have been corrected-thus making the plane data completed and accurate.
    • 该设备的线数据生成单元通过图像扫描器自动读取地图图像,在图案识别模块中生成数字图像信号,在线数据图像处理单元中准备线数据,并将线数据存储在 RAM(I)。 数据转换器从线数据生成单元检索线数据,准备平面数据,并将平面数据发布到属性数据准备单元。 通过封闭区域数据图像处理单元,基于从键盘输入的指令,属性信息准备单元插入平面数据中的不连续点; 分配与这些点对应的属性,并打印输出。 RAM(II)存储完成的数据。 平面数据中的不连续点的插值由输入端子PCi(i = 1,2,...,n)共同地同时进行。 使用该方法,可以通过读取原始的地形图等来容易且快速地准备精确的平面数据,使得矢量线数据被转换成已经校正了不连续点的平面数据,从而使平面数据完成并准确。