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Source verification using images

  • US 5,859,935 A
  • Filed: 04/25/1997
  • Issued: 01/12/1999
  • Est. Priority Date: 07/22/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A machine for performing source verification so as to determine whether an operation may be performed, the machine comprising:

  • image input circuitry for obtaining image set data as input;

    a memory device having data stored therein; and

    a processor connected for receiving image set data from the image input circuitry;

    the processor further being connected for accessing the data stored in said memory device;

    the data stored in the memory device comprising;

    original source verifying data defining and original source verifying image, said original source verifying image associated with said operation;

    match criterion data defining a criterion for use in generating sameness data indicating whether two images are the same; and

    instruction data indicating instructions the processor can execute;

    said instruction data including instructions for;

    receiving image set data from the image input circuitry, the image set data defining an image set that shows a purported source verifying image;

    comparing the image set data and the original source verifying data from memory to obtain similarity measure data;

    the similarity measure data indicating a measure of similarity between the original and purported source verifying images;

    comparing the match criterion data and the similarity measure data to obtain sameness data indicating whether the original and purported source verifying images are the same; and

    performing said operation only if the sameness data indicate that the original and purported source verifying images are the same.

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