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    • 3. 发明公开
    • Stereoscopic map-display method and navigation system using the method
    • Verfahren zur stereoskopischen Kartenanzeige und Navigationssystem zur Verwendung bei dem Verfahren
    • EP1024467A2
    • 2000-08-02
    • EP00101242.6
    • 2000-01-25
    • Hitachi, Ltd.Xanavi Informatics Corporation
    • Okude, MarikoEndo, YoshinoriHiroshige, Hideo
    • G08G1/0969
    • G01C21/3638G08G1/0969
    • The view point-setting part (305) 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 (307). The data reading part (308) reads out map data M (3) about map elements such as buildings, which are located around the current position. The representing method-changing part (312) calculates the distance or level difference between the view point 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 (311) 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 (312), and displays the image.
    • 视点设定部(305)基于当前位置测量部所计算出的当前位置和位置校正值,计算要设定在轿厢的当前位置之后和空中的视点V的位置 部分(307)。 数据读取部(308)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(3)。 代表方法改变部分(312)计算视点与每个地图元素之间的距离或水平差,并且例如改变视点附近的一个地图元素的表示形状,即,在 距离观察点的预定距离内的区域,到详细的形状,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的区域分别为简单的形状。 最后,显示处理部(311)根据从表示方式变更部(312)发送的映射要素的显示模式,构成每个映射要素的图像,并显示图像。