Linear and nonlinear oblivious data hiding

Document Type

Article

Publication Date

12-15-2004

Abstract

The majority of the existing data hiding schemes are based on the direct-sequence (DS) modulation where a low-power random sequence is embedded into the original cover signal to represent hidden information. In this paper, we investigate linear and nonlinear modulation approaches in digital data hiding. One typical DS modulation algorithm is explored and its optimal oblivious detector is derived. The results expose its poor cover noise suppression as the hiding signature signal always has much lower energy than the cover signal. A simple nonlinear algorithm, called set partitioning, is proposed and its performance is analyzed. Analysis and simulation studies further demonstrate improvements over the existing schemes.

Identifier

11844267262 (Scopus)

Publication Title

Eurasip Journal on Applied Signal Processing

External Full Text Location

https://doi.org/10.1155/S1110865704403059

ISSN

11108657

First Page

2102

Last Page

2112

Issue

14

Volume

2004

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