Journal Articles
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The Optimal n-out-of-n Visual Secret Sharing Scheme for Gray-Scale Images
- Author(s)
- M. Iwamoto and H. Yamamoto
- Journal
- IEICE Transactions on Fundamentals
- Vol.
- E85–A
- No.
- 10
- Pages
- 2238–2247
- Publisher
- IEICE
- Publication Year
- 2002
Abstract
In this paper, a method is proposed to construct an n-out-of-n visual secret sharing scheme for gray-scale images, for short an (n, n)-VSS-GS scheme, which is optimal in the sense of contrast and pixel expansion, i.e., resolution. It is shown that any (n, n)-VSS-GS scheme can be constructed based on the so- called polynomial representation of basis matrices treated in (15), (16). Furthermore, it is proved that such construction can attain the optimal (n, n)-VSS-GS scheme.