System and method for synchronizing map images
First Claim
1. A computer-implemented method of manipulating map images, each of which has a natural, internal coordinate system and is georeferenced by a georeferencing function, relative to geographic coordinates, comprising:
- (a) simultaneously displaying each map image in its respective internal coordinate system (b) altering a first of the map images;
(c) determining the geographic coordinates of the alteration to the first map image by applying thereto its georeferencing function if the alteration'"'"'s coordinates are not already in geographic format; and
(d) altering the other map images so that their displays contain the same alteration as the first map image at the same geographic coordinates as the first map image'"'"'s alteration by applying to the other map images their respective georeferencing function if they are not already in geographic format.
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Accused Products
Abstract
An originally non-georeferenced raster map, which may have resulted from scanning and storing a non-georeferenced paper map, is georeferenced with reference to a georeferenced map, such as a vector map. Points denoting common features, such as road intersections, on each map are captured as point-pairs. When two point-pairs have been captured, a computer system calculates two functions, one converting the x,y coordinates of the raster map to the lat,lon coordinates of the vector map, the other converting lat,lon to x,y. Thereafter, the maps may be viewed simultaneously—top-and-bottom, side-by-side—or quasi-simultaneously, for example, toggling rapidly back and forth. The georeferencing functions are used by the system to effect manipulation of one map as the other map is manipulated. Thus, any manipulation of the vector map—scrolling, zooming, etc,—by a user is mimicked by the raster map.
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Citations
16 Claims
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1. A computer-implemented method of manipulating map images, each of which has a natural, internal coordinate system and is georeferenced by a georeferencing function, relative to geographic coordinates, comprising:
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(a) simultaneously displaying each map image in its respective internal coordinate system (b) altering a first of the map images;
(c) determining the geographic coordinates of the alteration to the first map image by applying thereto its georeferencing function if the alteration'"'"'s coordinates are not already in geographic format; and
(d) altering the other map images so that their displays contain the same alteration as the first map image at the same geographic coordinates as the first map image'"'"'s alteration by applying to the other map images their respective georeferencing function if they are not already in geographic format. - View Dependent Claims (2, 3, 4, 5, 6, 7, 15, 16)
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8. A computer system for manipulating map images, each of which has a natural, internal coordinate system and is georeferenced by a georeferencing function relative to geographic coordinates, comprising:
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(a) monitor facilities for simultaneously displaying each map image in its respective internal coordinate system;
(b) mouse/keyboard facilities for altering a first of the map images;
(c) first facilities for determining the geographic coordinates of the alteration to the first map image by applying thereto its georeferencing function if the alteration'"'"'s coordinates are not already in geographic format; and
(d) second facilities for altering the other map images so that their displays contain the same alteration as the first map image at the same geographic coordinates as the first map image'"'"'s alteration by applying to the other map images their respective georeferencing function if they are not already in geographic format. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification