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Scalable secret image sharing
- Source :
-
Signal Processing: Image Communication . Apr2007, Vol. 22 Issue 4, p363-373. 11p. - Publication Year :
- 2007
-
Abstract
- 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⩽k⩽n) shadow images can be used to reconstruct O in a scalable manner such that the amount of information about O is proportional to k, and (d) O can be reconstructed perfectly when all of the n shadow images are available. The clarity of O can be measured in terms of several metrics. We define three modes, namely the multisecret, priority, and progressive modes, for sharing O in our scheme. The scalability and flexibility of the proposed schemes indicate the wide range of potential applications for secret image sharing. [Copyright &y& Elsevier]
- Subjects :
- *IMAGE files
*IMAGE transmission
*IMAGING systems
*SCALABILITY
Subjects
Details
- Language :
- English
- ISSN :
- 09235965
- Volume :
- 22
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Signal Processing: Image Communication
- Publication Type :
- Academic Journal
- Accession number :
- 24784728
- Full Text :
- https://doi.org/10.1016/j.image.2006.12.012