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Title:
DIGITAL WATERMARKING
Document Type and Number:
WIPO Patent Application WO/2015/031495
Kind Code:
A3
Abstract:
Some implementations may include a method for watermarking an identification document, the method including: modulating a spatial luminance pattern associated with a first digital watermark to encode a first portion of personally identifiable information; modulating a spatial chrominance distribution associated with a second digital watermark to encode a second portion of the personally identifiable information; and applying the first digital watermark and the second digital watermark to the identification document.

Inventors:
MARTIN BRIAN (US)
PODER DANIEL (US)
ECKEL ROBERT ANDREW (US)
Application Number:
PCT/US2014/052949
Publication Date:
November 05, 2015
Filing Date:
August 27, 2014
Export Citation:
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Assignee:
MARTIN BRIAN (US)
PODER DANIEL (US)
ECKEL ROBERT ANDREW (US)
International Classes:
G07F7/12
Foreign References:
US20070016790A12007-01-18
US20120014557A12012-01-19
US20050066172A12005-03-24
US20070170248A12007-07-26
Attorney, Agent or Firm:
WANG, Yao et al. (P.O. Box 1022Minneapolis, Minnesota, US)
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