Patent ID: 8406513

Claim:
A method of determining the location in ground space of a selected point in a digital image of the earth obtained by a camera, the image comprising a rectangular image having four corners and corresponding to an image space, wherein the digital image is associated with data indicating the geo-location coordinates for the points in the ground space corresponding to the four corners of the image, comprising the steps of: (a) performing independently and in parallel a recursive partitioning of both the image space and the ground space into successively smaller quadrants until a pixel coordinate in the image space assigned to the selected point is within a predetermined limit (Δ) of the center of a final recursively partitioned quadrant in the image space, and (b) calculating a geo-location of the point in the ground space corresponding to the selected point in the image space from the final recursively partitioned quadrant in the ground space corresponding to the final recursively partitioned quadrant in the image space.