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Method to efficiently index extracted image features from geographically located images

  • US 8,433,338 B1
  • Filed: 08/30/2011
  • Issued: 04/30/2013
  • Est. Priority Date: 08/30/2011
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • maintaining in data storage a plurality of images and a plurality of geo-feature identifiers, wherein each image in the plurality of images is associated with at least one geo-feature identifier that indicates at least one geographic cell in which the image was recorded and a visual feature of the image;

    receiving a query image from a client device;

    receiving an indication of a requested geographic location, wherein the indication of the geographic location comprises an indication of a location of the client device and an estimate of error in the location of the client device;

    determining at least one target geographic cell corresponding to the requested geographic location;

    identifying at least one target visual feature within the query image;

    determining at least one requested geo-feature identifier based on the at least one target geographic cell and the at least one target visual feature; and

    selecting one or more images from the plurality of images based on the at least one requested geo-feature identifier.

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