An Automatic Method of Counting the Passing People through the Gate by Using Two Space-time Images. - Kenji Terada; Masaki Fujikawa; Jun-Ichi Yamaguchi (MVA, 1996)

Study of Garment-Wearing Detecting System Using Intra-Body Communication Technology. - Masaki Fujikawa; Kenji Furusawa; Hiroyuki Aoki; Masakatsu Nishigaki; Masasumi Yoshizawa (ICWN, 2010)

Study of Countermeasures for Content Leaks by Video Recording. - Masaki Fujikawa; Junki Akimoto; Fumihiko Oda; Kengo Moriyasu; Shingo Fuchi; Yoshikazu Takeda (ARES, 2011)

A Study of Prevention for Social Engineering Attacks Using Real/Fake Organization's Uniforms: Application of Radio and Intra-Body Communication Technologies. - Masaki Fujikawa; Masakatsu Nishigaki (ARES, 2011)

The New Verification Method of Authenticity for Pottery and Porcelain Products: Application of the Artifact-Metrics Technology. - Masaki Fujikawa; Fumihiko Oda; Kengo Moriyasu; Shingo Fuchi; Yoshikazu Takeda (COMPSAC, 2013)

Transparent cut detection sensor: Proposal of the security device that makes information leakage by photo/video shooting diffucult. - Masaki Fujikawa; Ryosuke Kamai; Sou Tsunetsugu; Michiko Ogawa (ICCST, 2014)

Multimodal Artifact Metrics for Valuable Resin Card. - Masaki Fujikawa; Kouki Jitsukawa; Shingo Fuchi (FedCSIS, 2017)

Anti-counterfeiting Technique for Molded Resin Articles. - Masaki Fujikawa; Kouki Takayama; Shingo Fuchi (ICIBE, 2017)

Development of an SNS education game for higher-grade elementary school children. - Masaki Fujikawa; Ryoya Kanou; Airi Itoh; Yoshie Abe (IC4E, 2019)

Fundamental theorem of matrix representations of hyper-dual numbers for computing higher-order derivatives. - Yusuke Imoto; Naoya Yamanaka; Takeo Uramoto; Masato Tanaka; Masaki Fujikawa; Naoto Mitsume (JSIAM Lett., 2020)