Shared image generation apparatus and method, computer...

Details Shared image generation apparatus and method, computer... Shared image generation apparatus and method, computer...

2005-12-13

2005-12-13

Johns, Andrew W. (Department: 2625)

Image analysis

Histogram processing

For segmenting an image

C382S100000, C345S033000

Reexamination Certificate

active

06975760

ABSTRACT:
A shared image generation apparatus generates a basis matrix on the basis of a graph, the vertex set of which corresponds to a set of a plurality of members to which shared images are to be distributed, and generates a plurality of shared images to be distributed to the plurality of members on the basis of the basis matrix and an externally input secret image to be shared. The plurality of generated shared images form the secret image when they are stacked up.

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A. Shamir, “How To Share A Secret,” Nov., 1979, Communications of the ACM, vol. 22, No. 11, pp. 612-613.
M. Naor and A. Shamir, “Visual Cryptography,” Advances in Cryptology—Eurocrypt, 1994, Lecture Notes in Computer Science 950, pp. 1-12, Springer-Verlag.
Okamoto, Tatsuaki and Yamamoto, Hirosuke, “Modern Cryptography”, Sangyo Tosho, pp. 209-219, 1997.

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