Meaning Description by SD-Forms and a Prototype of a Conversational-Text Retrieval System. - Eiji Kawaguchi; Marilyn Lee; Koichi Nozaki (ICTAI, 1993)

A Large Capacity Steganography Using Color BMP Images. - Koichi Nozaki; Michiharu Niimi; Richard O. Eason; Eiji Kawaguchi (ACCV (1), 1998)

A Concept of Digital Picture Envelope for Internet Communication. - Eiji Kawaguchi; Koichi Nozaki; Michiharu Niimi; Hideki Noda; Richard O. Eason (EJC, 1998)

A Prototype of Semantic Retrieval for Video Data Using SD-Form. - Masahiro Wakiyama; Shota Yoshihara; Koichi Nozaki; Eiji Kawaguchi (EJC, 2003)

A Model of Digital Contents Access Control System Using Steganographic Information Hiding Scheme. - Eiji Kawaguchi; Michiro Maeta; Hideki Noda; Koichi Nozaki (EJC, 2006)

An Audio Steganography by a Low-Bit Coding Method with Wave Files. - Masahiro Wakiyama; Yasunobu Hidaka; Koichi Nozaki (IIH-MSP, 2010)