Map display apparatus

Details Map display apparatus Map display apparatus

2004-11-10

2008-12-02

Tung, Kee M (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Three-dimension

C345S630000, C345S651000, C340S995100, C701S208000

Reexamination Certificate

active

07460120

ABSTRACT:
A map display apparatus includes a view transformation matrix generation unit which generates a view transformation matrix, including four rows and four columns, for transforming a global coordinate of a three-dimensional object into a view coordinate system; a view transformation matrix change unit which (i) changes, to 0, (a) the value of the first row in the second column and (b) the value of the third row in the second column in the view transformation matrix, in the case where the coordinate transformation is executed by multiplying a coordinate with the view transformation matrix from the left side of the coordinate, and (ii) changes, to 0, (a) the value of the second row in the first column and (b) the value of the second row in the third column in the view transformation matrix, in the case where the coordinate transformation is executed by multiplying the coordinate with the view transformation matrix from the right side of the coordinate; and a view transformation unit which transforms the global coordinate into the view coordinate system using the changed view transformation matrix.

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