Reversible data hiding using integer wavelet transform and companding technique

Authors:
Guorong Xuan;Chengyun Yang;Yizhan Zhen;Yun Q. Shi;Zhicheng Ni
Affiliations:
Tongji University, Shanghai, P.R. China;Tongji University, Shanghai, P.R. China;Tongji University, Shanghai, P.R. China;New Jersey Institute of Technology, NJ;New Jersey Institute of Technology, NJ
Venue:
IWDW'04 Proceedings of the Third international conference on Digital Watermarking
Year:
2004

Citing 2
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Abstract

This paper presents a novel reversible data-embedding method for digital images using integer wavelet transform and companding technique. This scheme takes advantage of the Laplacian-like distribution of integer wavelet coefficients in high frequency subbands, which facilitates the selection of compression and expansion functions and keeps the distortion small between the marked image and the original one. Experimental results show that this scheme outperforms the state-of-the-art reversible data hiding schemes.