Authors:
Stephen Pollard
;
Robert Ulichney
;
Matthew Gaubatz
and
Steven Simske
Affiliation:
Hewlett Packard Labs, United Kingdom
Keyword(s):
Forensic Printing, Stegatones, Image Registration, Gabor Filters, Biometrics.
Related
Ontology
Subjects/Areas/Topics:
Applications and Services
;
Computer Vision, Visualization and Computer Graphics
;
Document Imaging in Business
;
Media Watermarking and Security
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.