Reprojecting map images using graphical techniques
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United States of America Patent
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-
Jul 10, 2007
Grant Date -
Dec 1, 2005
app pub date -
Oct 5, 2004
filing date -
May 28, 2004
priority date (Note) -
Expired
status (Latency Note)
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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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Cited Art Landscape
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