Title:
THREE-DIMENSIONAL MAP DRAWING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2011/111239
Kind Code:
A1
Abstract:
Disclosed is a three-dimensional map wherein scale is preserved. Landscape feature data, wherein roads, buildings, and other landscape features are drawn three-dimensionally, is prepared, and a three-dimensional map is drawn on the basis of the data. The landscape feature data is generated by a method that projects an actual landscape feature (CST2) upon a projection plane (PL2) with parallel lines along the projection direction (PRJ), or in other words, a parallel projection, rather than a perspective projection. The landscape feature data is comprised of either two-dimensional raster data or polygonal data that draws a parallel projected projection map. It is possible to draw the three-dimensional map by only drawing the prepared landscape feature data, without rendering or other load-intensive processing. Unlike the perspective projection, with the parallel projection, the positional relations and scale of shapes between buildings is preserved, thereby facilitating a three-dimensional map wherein scale is preserved.
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Inventors:
KISHIKAWA KIYONARI (JP)
ADA MASAYA (JP)
TESHIMA EIJI (JP)
IRIE TORU (JP)
TOMITAKA TSUBASA (JP)
ADA MASAYA (JP)
TESHIMA EIJI (JP)
IRIE TORU (JP)
TOMITAKA TSUBASA (JP)
Application Number:
PCT/JP2010/058151
Publication Date:
September 15, 2011
Filing Date:
May 14, 2010
Export Citation:
Assignee:
GEO TECHNICAL LAB CO LTD (JP)
KISHIKAWA KIYONARI (JP)
ADA MASAYA (JP)
TESHIMA EIJI (JP)
IRIE TORU (JP)
TOMITAKA TSUBASA (JP)
KISHIKAWA KIYONARI (JP)
ADA MASAYA (JP)
TESHIMA EIJI (JP)
IRIE TORU (JP)
TOMITAKA TSUBASA (JP)
International Classes:
G09B29/00; G01C21/00
Foreign References:
| JP2000356525A | 2000-12-26 | |||
| JPH0396985A | 1991-04-22 | |||
| JPH09127862A | 1997-05-16 | |||
| JPH10232605A | 1998-09-02 | |||
| JP2000321975A | 2000-11-24 | |||
| JP2001229402A | 2001-08-24 | |||
| JPH0470507B2 | 1992-11-11 | |||
| JP3428294B2 | 2003-07-22 |
Other References:
See also references of EP 2546821A4
Attorney, Agent or Firm:
KATO MITSUHIRO (JP)
Mitsuhiro Kato (JP)
Mitsuhiro Kato (JP)
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Claims: