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Spatial image index and associated updating functionality

  • US 8,971,641 B2
  • Filed: 12/16/2010
  • Issued: 03/03/2015
  • Est. Priority Date: 12/16/2010
  • Status: Active Grant
First Claim
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1. A method, using a physical image matching system, of performing a search based on a query image, comprising:

  • receiving a query image;

    receiving location information which indicates a location that is associated with the query image;

    identifying a bounding region associated with the location, based on the location information;

    identifying, using an index, a set of candidate reference images that match the query image and the bounding region;

    performing verification analysis to identify at least one final matching image, selected from among the candidate reference images, that successfully matches the query image, the verification analysis includingmapping non-quantized features based on the query image into additional quantized features, andmapping points in the query image to corresponding points in the at least one final matching image by applying a geometric model that transforms each point in the query image into a corresponding point in the at least one final matching image; and

    updating the index to include at least one image information entry that corresponds, respectively, to the at least one final matching image that successfully matches the query image.

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