×

Watermarking of data invariant to distortion

  • US 8,098,883 B2
  • Filed: 10/06/2009
  • Issued: 01/17/2012
  • Est. Priority Date: 12/13/2001
  • Status: Expired due to Fees
First Claim
Patent Images

1. A computer-implemented method comprising:

  • electronically transforming a data set to a first domain in which data values are more invariant to distortion;

    electronically transforming the data set from the first domain to a second domain that includes a set of expandable values, wherein transforming the data set from the first domain to the second domain comprises recursively transforming at least one difference value; and

    modifying expandable values to include auxiliary data.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×