Secure data-hiding in multimedia using NMF

Authors:
Hafiz Malik;Farhan Baqai;Ashfaq Khokhar;Rashid Ansari
Affiliations:
Department of Electrical and Computer Engineering, University of Illinois at Chicago, MC 154, Chicago, IL;Sony US Advanced Technologies Center, San Jose, CA;Department of Electrical and Computer Engineering, University of Illinois at Chicago, MC 154, Chicago, IL;Department of Electrical and Computer Engineering, University of Illinois at Chicago, MC 154, Chicago, IL
Venue:
MRCS'06 Proceedings of the 2006 international conference on Multimedia Content Representation, Classification and Security
Year:
2006

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Abstract

This paper presents a novel data-hiding scheme for multimedia data using non-negative matrix factorization (NMF). Nonnegative feature space (basis matrix) is estimated using the NMF-framework from the sample set of multimedia objects. Subsequently, using a secret key a subspace (basis vector) of the estimated basis matrix is used to decompose the host data for information embedding and detection. Binary dither modulation is used to embed/detect the information into the host signal coefficients. To ensure the fidelity of the embedded information for a given robustness, host media coefficients are selected for information embedding according to the estimated masking threshold. Masking threshold is estimated using the human visual/auditory system (HVS/HAS) and host media. Simulation results show that the proposed NMF-based scheme provides flexible control over robustness and capacity for imperceptible embedding.