A visual cryptography based system for sharing multiple secret images

Authors:
Shang-Kuan Chen
Affiliations:
Department of Computer Science and Information Engineering, Yuanpei University, Hsinchu, Taiwan, R.O.C.
Venue:
ISCGAV'07 Proceedings of the 7th WSEAS International Conference on Signal Processing, Computational Geometry & Artificial Vision
Year:
2007

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Abstract

A Visual Cryptography (VC)-based system for sharing multiple secret images is proposed. Several weighted transparencies are generated so that people can reveal multiple secret images by stacking qualified subsets of some transparencies together. The transparency with relatively larger weight decides which secret image will be revealed. The proposed method has the following characteristics: decoding without computation, multiple secret images recovery, max-weight dominance, and quality-control design.