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Data hiding and extraction methods

  • US 6,005,643 A
  • Filed: 09/02/1997
  • Issued: 12/21/1999
  • Est. Priority Date: 10/15/1996
  • Status: Expired due to Term
First Claim
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1. A data hiding method for embedding information into a motion image constituted by a plurality of frames, comprising the steps of:

  • specifying at least one embedding region in the frame for embedding information; and

    determining a type of interframe prediction of said embedding region in correspondence with information to be embedded by referring to an embedding rule where a content of data to be embedded is caused to correspond to the type of interframe prediction of said embedding region.

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