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Self checkout with visual recognition

  • US 8,474,715 B2
  • Filed: 06/11/2012
  • Issued: 07/02/2013
  • Est. Priority Date: 08/17/2007
  • Status: Active Grant
First Claim
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1. A checkout system, comprisinga data reader section including an optical code reader having a read region and configured to read an optical code on an item located in the read region and to generate a product identifier of the item;

  • a collection section within which items read by the optical code reader are collected after having been read by the optical code reader;

    at least one camera disposed with a field of view of the collection section for capturing one or more images of an item within the collection section;

    a database of features and images of known objects;

    an image processor configured toa) extract a plurality of visual features from the one or more images of the item,b) identify matches between the extracted visual features and the features of known objects,c) generate a geometric transform between the extracted visual features and the features of known objects for a subset of known objects corresponding to the matches, andd) identify one of the known objects based on a best match of the geometric transform; and

    a transaction processor configured to execute at least one of a predetermined set of actions if the known object that has been identified is different than the item corresponding to the product identifier.

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