High capacity reversible data hiding using overlapping difference expansion

E. Chrysochos; E. E. Varsaki; V. Fotopoulos; A. N. Skodras

doi:10.1109/WIAMIS.2009.5031447

Image Analysis for Multimedia Interactive Services, International Workshop on

High capacity reversible data hiding using overlapping difference expansion

Year: 2009, Pages: 121-124

DOI Bookmark: 10.1109/WIAMIS.2009.5031447

Authors

E. Chrysochos, Digital Systems&Media Computing Laboratory, School of Science and Technology, Hellenic Open University, 13-15 Tsamadou st., GR-26222, Patras, Greece
E. E. Varsaki, Digital Systems&Media Computing Laboratory, School of Science and Technology, Hellenic Open University, 13-15 Tsamadou st., GR-26222, Patras, Greece
V. Fotopoulos, Digital Systems&Media Computing Laboratory, School of Science and Technology, Hellenic Open University, 13-15 Tsamadou st., GR-26222, Patras, Greece
A. N. Skodras, Digital Systems&Media Computing Laboratory, School of Science and Technology, Hellenic Open University, 13-15 Tsamadou st., GR-26222, Patras, Greece

Abstract

Difference expansion (DE) has been widely used for reversible data hiding. In this work, a new DE based scheme is presented that uses consecutive, overlapping pairs, instead of the non-overlapping pairs or triads used by traditional DE derivatives. The scheme is superior to the existing approaches, both in capacity and PSNR terms. By applying multiple runs of the embedding process, a significant capacity gain is obtained at the expense of lower quality.

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High capacity reversible data hiding using overlapping difference expansion

Authors

Abstract

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