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Method and apparatus for representing and searching for an object using shape

  • US 7,769,248 B2
  • Filed: 10/31/2007
  • Issued: 08/03/2010
  • Est. Priority Date: 04/29/1999
  • Status: Expired due to Fees
First Claim
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1. A method of representing an object appearing in an image, wherein the object appears in the image with a first two-dimensional outline in a first perspective view, by processing signals corresponding to the image using one or more processors, the method comprising:

  • extracting, using a processor, the first two-dimensional outline of the object in the image;

    deriving, using a processor, a view descriptor of the first two-dimensional outline of the object in the first perspective view;

    identifying the object;

    identifying at least one image in a database of images that includes the object, or a different example of the object, in a perspective view different from the first perspective view;

    extracting, using a processor, at least one of the identified images from the database;

    obtaining, using a processor, from the extracted image at least one additional outline of the object in a perspective view different from said first perspective view;

    deriving, using a processor, at least one additional view descriptor of an outline of the object in a perspective view different from said first perspective view; and

    associating, using a processor, the two or more view descriptors representing the outlines of the object from different perspective views to form an object descriptor.

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