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Authors: Xiaoyu Wu ; Duncan S. Wong and Qing Li

Affiliation: City University of Hong Kong, China

Keyword(s): Information hiding, Extended visual Cryptography, Secret sharing.

Related Ontology Subjects/Areas/Topics: Cryptographic Techniques and Key Management ; Data Engineering ; Data Management and Quality ; Digital Rights Management ; Information and Systems Security ; Shannon Theory ; Speech/Image Coding

Abstract: A k-out-of-n Extended Visual Cryptography Scheme (EVCS) is a secret sharing scheme which hides a secret image into n shares, which are also some images. The secret image can be recovered if at least k of the shares are superimposed, while nothing can be obtained if less than k shares are known. Previous EVCS schemes are either for black-and-white images or having pixel expansion. In this paper, we propose the first k-out-of-n EVCS for color images with no pixel expansion. The scheme also improves the contrast of the n shares and the reconstructed secret image (i.e. the superimposed image of any k or more shares) by allowing users to specify the level of each primary color (i.e. Red, Green and Blue) in the image shares as well as the reconstructed secret image.

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Paper citation in several formats:
Wu, X.; S. Wong, D. and Li, Q. (2010). EXTENDED VISUAL CRYPTOGRAPHY SCHEME FOR COLOR IMAGES WITH NO PIXEL EXPANSION. In Proceedings of the International Conference on Security and Cryptography (ICETE 2010) - SECRYPT; ISBN 978-989-8425-18-8; ISSN 2184-3236, SciTePress, pages 423-426. DOI: 10.5220/0002936904230426

@conference{secrypt10,
author={Xiaoyu Wu. and Duncan {S. Wong}. and Qing Li.},
title={EXTENDED VISUAL CRYPTOGRAPHY SCHEME FOR COLOR IMAGES WITH NO PIXEL EXPANSION},
booktitle={Proceedings of the International Conference on Security and Cryptography (ICETE 2010) - SECRYPT},
year={2010},
pages={423-426},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002936904230426},
isbn={978-989-8425-18-8},
issn={2184-3236},
}

TY - CONF

JO - Proceedings of the International Conference on Security and Cryptography (ICETE 2010) - SECRYPT
TI - EXTENDED VISUAL CRYPTOGRAPHY SCHEME FOR COLOR IMAGES WITH NO PIXEL EXPANSION
SN - 978-989-8425-18-8
IS - 2184-3236
AU - Wu, X.
AU - S. Wong, D.
AU - Li, Q.
PY - 2010
SP - 423
EP - 426
DO - 10.5220/0002936904230426
PB - SciTePress

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