The Optimal n-out-of-n Visual Secret Sharing Scheme for Gray-Scale Images
Mitsugu Iwamoto, H. Yamamoto · IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences · 2002
SUMMARY 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 socalled 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.