Bird's-eye view forming method, map display apparatus and navigation system
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United States of America Patent
Stats
-
Jul 6, 2004
Issued Date -
N/A
app pub date -
Jun 9, 2003
filing date -
Apr 20, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a navigation system using a bird's-eye view display mode, map data on a plan view map are subjected to a perspective projection conversion to obtain drawing data on a bird's-eye view map. An input of the position of a view point is accepted, and a projection plane for a bird's-eye view is determined so that the display positions of the two points which have been subjected to perspective-projection conversion are coincident with predetermined positions. Alternatively, an input of a scale is accepted, so that the display positions of the two points after the perspective projection conversion are coincident with predetermined positions and the drawing scale is coincident with the input scale. In a further alternative, an input of the projection angle is accepted, and the projection plane is determined on the basis of the projection angle and the position of the view point.
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Family
International Classification(s)
Cited Art Landscape
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