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Image verification system

  • US 7,162,637 B2
  • Filed: 12/20/2002
  • Issued: 01/09/2007
  • Est. Priority Date: 12/28/2001
  • Status: Expired due to Fees
First Claim
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1. An image verification system comprising:

  • an imaging device including (a) an image generating unit which generates image data, and (b) a first verification data generating unit which generates first verification data using the image data and common information; and

    a first image verification device including (a)a first verification unit which verifies whether or not the image data is modified, using the image data, the first verification data, and the common information, (b) an embedding unit which, if it is verified by the first verification unit that the image data is not modified, embeds watermark data for detecting a modified portion of the image data so as to generate watermarked image data, and (c) a second verification data generating unit which generates second verification data using the watermarked image data and secret information.

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