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THREE-DIMENSIONAL MAP DISPLAY NAVIGATION DEVICE, COMPUTER-READABLE THREE-DIMENSIONAL MAP DISPLAY SYSTEM, AND COMPUTER READABLE MEDIUM STORING THREE-DIMENSIONAL MAP DISPLAY PROGRAM
THREE-DIMENSIONAL MAP DISPLAY NAVIGATION DEVICE, COMPUTER-READABLE THREE-DIMENSIONAL MAP DISPLAY SYSTEM, AND COMPUTER READABLE MEDIUM STORING THREE-DIMENSIONAL MAP DISPLAY PROGRAM
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机译:三维地图显示导航设备,计算机可读的三维地图显示系统和计算机可读的存储三维地图显示程序
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摘要
A three-dimensional map display navigation device includes a map database having a road database that stores road data and a stereograph database that stores stereographic data of a solid body; a route information storage portion for storing route information pertaining to a guidance route set based on the road data; a stereographic data reading unit for accessing the map database, computing a discrete distance between the guidance route and the solid body, and selectively transferring stereographic data pertaining to the solid body that has been simplified depending on the discrete distance to a buffer portion; and a map image generating unit for generating a three-dimensional map image for route guidance based on the stereographic data loaded from the buffer portion.
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