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    • 5. 发明授权
    • Stereoscopic map-display method and navigation system using the method
    • 立体地图显示方法和导航系统采用该方法
    • US06587784B1
    • 2003-07-01
    • US09493134
    • 2000-01-28
    • Mariko OkudeYoshinori EndoHideo Hiroshige
    • Mariko OkudeYoshinori EndoHideo Hiroshige
    • G01C2100
    • G01C21/3638G08G1/0969
    • The view point-setting part calculates the position of the view point V to be set behind the current position of the car and up in the air, based on the current position calculated by the current position-measuring part and the position correcting part. The data reading part reads out map data M about map elements such as buildings, which are located around the current position. The representing method-changing part calculates the distance or level difference between the viewpoint and each of the map elements, and, for example, changes the representation shapes of ones of the map elements near the view point, that is, in the region within a predetermined distance from the view point, to detailed shapes, and the rest ones far from the view point, that is, outside the region within a predetermined distance from the view point, to simple shapes, respectively. Finally, the display processing part composes an image of each of the map element according to the displaying mode of the map element, which is sent from the representation method-changing part, and displays the image.
    • 视点设定部根据由当前的位置测定部和位置校正部算出的当前位置,计算出将被设定在轿厢的当前位置和空中的后方的视点V的位置。 数据读取部分读出关于位于当前位置周围的诸如建筑物的地图元素的地图数据M. 代表方法改变部分计算视点和每个地图元素之间的距离或水平差,并且例如改变靠近观点的地图元素中的一个地图元素的表示形状,即在 从视点到详细形状的预定距离,以及远离观察点的其余部分,即距离观察点的预定距离内的区域之外分别到简单形状。 最后,显示处理部分根据从表示方法改变部分发送的地图元素的显示模式,构成每个地图元素的图像,并显示图像。