A method of storage and retrieval of digital map data based...

Details A method of storage and retrieval of digital map data based... A method of storage and retrieval of digital map data based...

G - Physics

06

F

352/32, 354/46

G06F 17/30 (2006.01) G06T 17/05 (2011.01) G01C 21/00 (2006.01) G09B 29/00 (2006.01)

Patent

CA 2001215

A method for storage and retrieval of digital map data representative of a tessellated sphere including five zones. Firstly, the number of tessellations for each zone is defined. secondly, the range of each zone is defined. Next, the radius of the sphere is defined. A spherical data base is then created by warping the digital map data into the spherical data base by latitude and longitude. Finally, data from the spherical data base is retrieved and the data may be displayed on a CRT display or a flat panel liquid crystal display.

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