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Global signatures for large-scale image recognition

  • US 10,565,759 B2
  • Filed: 06/26/2017
  • Issued: 02/18/2020
  • Est. Priority Date: 03/05/2015
  • Status: Active Grant
First Claim
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1. An image recognition device comprising:

  • at least one tangible, non-transitory, computer-readable memory configured to store a vocabulary including a set of content indices that reference corresponding cells in a descriptor space based on an input set of descriptors identifying medical information; and

    at least one processor coupled with the at least one tangible, non-transitory computer-readable memory and, upon execution of image recognition software instructions, is configured to;

    identify a plurality of local features of an image based on the vocabulary, the local features being represented by a plurality of local descriptors;

    determine an associated visual word in the vocabulary for each one of the plurality of local descriptors;

    generate, prior to facilitating an image recognition search, a plurality of global signatures for the image based on the associated visual words, wherein some of the plurality of global signatures are generated using local descriptors corresponding to different cropped versions of the image;

    store the plurality of global signatures; and

    facilitate the image recognition search to search a medical record dataset, wherein the image recognition search compares each of the stored plurality of global signatures with a plurality of document image signatures.

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