Reprojecting map images using graphical techniques

Details Reprojecting map images using graphical techniques Reprojecting map images using graphical techniques

2007-07-10

2007-07-10

Bella, Matthew C. (Department: 2624)

Computer graphics processing and selective visual display system

Computer graphics processing

Attributes

Reexamination Certificate

active

10957621

ABSTRACT:
A system and method of re-projecting a map image using graphical techniques is provided. A digital map image, in a first projection, may be divided into a number of rectangular sub-images, the geographic coordinates for the four corners of the rectangular sub-image may be computed, the planar coordinates in a second projection may be computed for the four corners of each rectangular sub-image, and each sub-image and its corresponding second projection coordinates may be supplied to a texture mapping subroutine with optional hardware acceleration of the texture mapping process in order to create a second map image in a second projection.

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