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Method for recognition between a first object and a second object each represented by images

  • US 8,027,532 B2
  • Filed: 03/17/2006
  • Issued: 09/27/2011
  • Est. Priority Date: 03/24/2005
  • Status: Expired due to Fees
First Claim
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1. A method for recognition between a first object and a second object represented by at least one first image and at least one second image, each containing a plurality of pixels, comprising the following steps:

  • defining a plurality of randomly positioned rectangular array of pixels;

    filtering by the mathematical operation of bi-dimensional matrix convolution of said first image with the first n matrices obtained from said randomly positioned rectangular array of pixels to obtain n first filtered matrices;

    classifying said n first filtered matrices by providing a first centre and a first radius within a space of N dimensions, for each of said n first filtered matrices, said first radius and said first centre representing n first hyperspheres within a space of N dimensions;

    filtering by the mathematical operation of bi-dimensional matrix convolution of said second image with the first n matrices obtained from said randomly positioned rectangular array of pixels to obtain n second filtered matrices;

    classifying said n second filtered matrices by providing a second centre within said space of N dimensions, for each of said n second filtered matrices;

    comparing said first centre and said first radius of each of said first filtered matrices with said second centre for each of said n second filtered matrices; and

    considering that recognition between said first object and said second object has taken place if at least one said second centre lies at a distance from said first centre which is less than or equal to at least one said first radius,wherein an inserted image of an unknown object is recognized only if a vector of the unknown object pertains to an N-dimensional sphere defined by the centre and radius of a previously inserted image.

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