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  • Research Article
  • Open Access

A Secret Image Sharing Method Using Integer Wavelet Transform

EURASIP Journal on Advances in Signal Processing20072007:063281

  • Received: 28 August 2006
  • Accepted: 25 June 2007
  • Published:


A new image sharing method, based on the reversible integer-to-integer (ITI) wavelet transform and Shamir's threshold scheme is presented, that provides highly compact shadows for real-time progressive transmission. This method, working in the wavelet domain, processes the transform coefficients in each subband, divides each of the resulting combination coefficients into shadows, and allows recovery of the complete secret image by using any or more shadows . We take advantages of properties of the wavelet transform multiresolution representation, such as coefficient magnitude decay and excellent energy compaction, to design combination procedures for the transform coefficients and processing sequences in wavelet subbands such that small shadows for real-time progressive transmission are obtained. Experimental results demonstrate that the proposed method yields small shadow images and has the capabilities of real-time progressive transmission and perfect reconstruction of secret images.


  • Information Technology
  • Quantum Information
  • Wavelet Transform
  • Secret Image
  • Integer Wavelet

Authors’ Affiliations

Department of Computer and Communication Engineering, Ming Chuan University, Taoyuan, 333, Taiwan
Department of Electrical and Computer Engineering, University of Pittsburgh, Pittsburgh, PA 15261, USA


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© C.-P. Huang and C.-C. Li. 2007

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.