Scalable secret image sharing

Authors:
Ran-Zan Wang;Shyong-Jian Shyu
Affiliations:
Department of Computer and Communication Engineering, Ming Chuan University, 5 Der-Ming Rd., Kwei-Shan, Tau-yuan 333, Taiwan, ROC;Department of Computer Science and Information Engineering, Ming Chuan University, 5 Der-Ming Rd., Kwei-Shan, Tau-yuan 333, Taiwan, ROC
Venue:
Image Communication
Year:
2007

Citing 11
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Abstract

In this paper, we propose an innovative scheme, namely the scalable secret image sharing scheme, for sharing an image O among n participants such that the clarity of the reconstructed image (i.e., the amount of information therein) scales with proportion with the number of the participants. The proposed scheme encodes O into n shadow images that exhibit the following features: (a) each shadow image reveals no information about O, (b) each shadow image is only half the size of O, (c) any k (2=