Technical Reports
HPL-2013-15
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Forensic Authentication of Data Bearing Halftones
Pollard, Stephen; Ulichney, Robert; Gaubatz, Matthew; Simske, Steven
HP Laboratories
HPL-2013-15
Keyword(s): forensic printing; Stegatones; image registration; Gabor filters; biometrics
Abstract: This paper introduces a practical system for combining overt, covert and forensic information in a single, small printed feature. The overt "carrier" feature need not be a dedicated security mark such as a 2D or color barcode, but can instead be integrated into a desirable object such as a logo as part of the aesthetically-desired layout using steganographic halftones (Stegatones). High-resolution imaging in combination with highly accurate and robust image registration is used to recover, simultaneously, a unique identity suitable for associating a unique print with an on-line database and a unique forensic signature that is both tamper and copy sensitive.
4 Pages
External Posting Date: March 6, 2013 [Fulltext]. Approved for External Publication
Internal Posting Date: March 6, 2013 [Fulltext]