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    • 4. 发明授权
    • Method for placing names for point-features on a map based on a plane
sweeping technique
    • 基于平面扫描技术在地图上放置点特征的名称的方法
    • US5988853A
    • 1999-11-23
    • US943596
    • 1997-10-03
    • Jang Su KimKyeong Hee OhKyung Eun ParkJong Won Lee
    • Jang Su KimKyeong Hee OhKyung Eun ParkJong Won Lee
    • G06F17/24G06F17/00
    • G06F17/243
    • In an automatic mapping system, a plurality of names are placed on a map in association with a plurality of corresponding point-features with minimized overlapping among the names. First a minimum bounding rectangle (MBR) is placed on a predetermined position of a target point located on a predetermined direction-uppermost position from point-features, where the MBR is selected for representing a name corresponding to the target point. Next, it is determined whether the MBR is overlapped with at least one of previously assigned MBRs and if the MBR is not overlapped with any of the previously assigned MBRs, the current position of the MBR is determined and the name is placed on the MBR. If the MBR is overlapped with at least one of the previously assigned MBRs, it is determined whether it is possible to continuously shift the MBR around the target point so that the MBR located on one of shifted positions is not overlapped with any of the previously assigned MBRs and, if possible, the MBR is located on the shifted position and the name is placed on the MBR. Another point-feature is assigned and located on a predetermined direction-uppermost position from the remaining point-features as a target point and the above steps are repeated until all of the point features contained on the map are processed.
    • 在自动映射系统中,将多个名称与多个对应的点特征相关联地放置在地图上,并且在名称之间具有最小化的重叠。 首先,将最小边界矩形(MBR)放置在位于从特征点的预定方向 - 最上方位置的目标点的预定位置,其中选择MBR以表示与目标点相对应的名称。 接下来,确定MBR是否与先前分配的MBR中的至少一个重叠,并且如果MBR与先前分配的任何MBR不重叠,则确定MBR的当前位置并将名称放置在MBR上。 如果MBR与先前分配的MBR中的至少一个重叠,则确定是否可以围绕目标点连续地移动MBR,使得位于移位位置之一上的MBR不与先前分配的任何一个重叠 MBR,如果可能,MBR位于移位的位置,名称放在MBR上。 分配另一个点特征并将其定位在作为目标点的剩余点特征的预定方向 - 最上位置上,并且重复上述步骤,直到处理包含在地图上的所有点特征。