Map display device and map display method

Details Map display device and map display method Map display device and map display method

2005-03-02

2011-10-18

Broome, Said (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

C345S418000, C345S420000

Reexamination Certificate

active

08040343

ABSTRACT:
A map display device and a map display method, in which a building in a map is formed as a pseudo three-dimensional figure and arithmetic processing to display the figure as a bird's-eye view is simplified. The map display device20for displaying map data, formed from vector data, on a display means has a plane figure-for-bird's-eye-view creation means218, a shift amount storage means219, a building position determination means220, and a figure data copying means221. The plane-figure-for-bird's-eye-view creation means218creates, from the map data formed from vector data, a plane figure for creating a bird's-eye view. The figure data copying means221copies and draws the plane figure to display a bird's-eye view. This is performed based on the positions of buildings determined by the building determination means220and on the shift amounts stored in the shift amount storage means219, and in this process, the plane figures are shifted upward on a display screen according to the shift amounts, and the copying and drawing are made one by one from a building positioned on the far side in the bird's-eye view.

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