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Adjustment of sensor geometry model parameters using digital imagery co-registration process to reduce errors in digital imagery geolocation data

  • US 5,995,681 A
  • Filed: 06/03/1997
  • Issued: 11/30/1999
  • Est. Priority Date: 06/03/1997
  • Status: Expired due to Term
First Claim
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1. For use with a digital imagery processing system, in which a first digital image of an object is derived from a first image capture system, and wherein the position of a respective pixel of said first digital image, in terms of a spatial coordinate system for said object, is definable to a first spatial accuracy, a method of improving the spatial accuracy of the location of the position of said respective pixel of said first digital image, said method comprising the steps of:

  • (a) providing a first geometry model associated with said first image capture system that projects said first digital image onto a registration surface;

    (b) providing a second digital image of said object that has been derived from a second image capture system, locations of respective pixels of which, in terms of said spatial coordinate system, are known to a second spatial accuracy, said second image capture system having a second geometry model that projects said second digital image onto said registration surface; and

    (c) modifying parameters of said first geometry model by co-registering said first digital image with said second digital image on said registration surface in accordance with said first and second respective geometry models therefor, thereby causing locations of respective pixels of said first image, in terms of said spatial coordinate system, to be known to said second spatial accuracy.

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