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Summary: 1
AN IMPROVED VISUAL CRYPTOGRAPHY SCHEME FOR SECRET HIDING
R.Youmaran, A. Adler, A. Miri
School of Information Technology and Engineering (SITE),
University of Ottawa, Ontario, Canada
ABSTRACT
Visual Cryptography is based on cryptography
where n images are encoded in a way that only the human
visual system can decrypt the hidden message without any
cryptographic computations when all shares are stacked
together. This paper presents an improved algorithm based
on Chang's and Yu visual cryptography scheme for hiding
a colored image into multiple colored cover images. This
scheme achieves lossless recovery and reduces the noise in
the cover images without adding any computational
complexity.
Keywords: Image processing, visual Cryptography, secret
sharing
I. INTRODUCTION
Visual cryptography, introduced by Naor and
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