3D MAP DISPLAY SYSTEM
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United States of America Patent
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Mar 18, 2016
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Feb 13, 2014
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Abstract
Representation of undulation with a light processing load is realized using three-dimensional ground surface data. Ground surface data representing a three-dimensional shape of a ground surface is stored in a map database. A two-dimensional image representing contrast of the ground surface is also generated by projecting the ground surface data by applying lighting thereto, and the two-dimensional image is stored in map data as a ground surface texture. In displaying the map, the ground surface texture is pasted on the ground surface data and perspective projection is performed. By such a configuration, even without applying lighting, a map can be provided which can give undulation of a ground surface with a light processing load.
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