Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2007/05/01 Vol. E90-ANo. 5pp. 949-951 Type of Manuscript: Special Section LETTER (Special Section on Discrete Mathematics and Its Applications) Category: Keyword: participants, shares, pixel expansion, relative contrast,
Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2004/05/01 Vol. E87-ANo. 5pp. 1198-1202 Type of Manuscript: Special Section LETTER (Special Section on Discrete Mathematics and Its Applications) Category: Keyword: secret sharing scheme, visual secret sharing scheme, visual cryptography, BIBD, latin square,