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Proceedings Paper

Stochastic dithering and watermarking
Author(s): Cesar L. Nino; Gonzalo R. Arce
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Paper Abstract

A new screen construction technique, which is described by means of a Maximum likelihood function as constraint of an iterative optimization procedure is introduced. Such stochastic screen function is spatially based, and is defined using the density function of a Markov point process. Further, a new high-capacity data embedding technique that focuses on exploiting the theory available for digital halftoning design, is also introduced. Such halftoning and watermarking scheme can be used in authentication and integrity verification applications as well as for general data embedding, where, digital signatures could be embedded into halftoned photos in a variety of identification documents. Being image independent, this new technique allows for imperceptible embedding such that no a priori knowledge is needed for recovery of inserted data.

Paper Details

Date Published: 28 December 2001
PDF: 13 pages
Proc. SPIE 4663, Color Imaging: Device-Independent Color, Color Hardcopy, and Applications VII, (28 December 2001); doi: 10.1117/12.452992
Show Author Affiliations
Cesar L. Nino, Univ. of Delaware (United States)
Gonzalo R. Arce, Univ. of Delaware (United States)

Published in SPIE Proceedings Vol. 4663:
Color Imaging: Device-Independent Color, Color Hardcopy, and Applications VII
Reiner Eschbach; Gabriel G. Marcu, Editor(s)

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