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Efficient and secure forensic marking in compressed domain

  • US 8,346,567 B2
  • Filed: 08/06/2012
  • Issued: 01/01/2013
  • Est. Priority Date: 06/24/2008
  • Status: Expired due to Fees
First Claim
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1. A method, comprising:

  • receiving a code that identifies a transaction at a marking device;

    accessing a plurality of tributaries that are in compressed domain, one or more of the plurality of the tributaries having been produced by embedding a string of watermark symbols into a host content and compressing the embedded host content thereafter, wherein each watermark symbol spans an integer number of compression units of a first compression algorithm;

    selecting a plurality of segments from the plurality of tributaries based on the received code such that a sequence of the selected segments corresponds to the received code; and

    assembling the selected segments at the marking device to produce a forensically marked host content in compressed domain.

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