Method for recognition of numbers on speed limit signs utilizing an eigen space method based on the KL transform. - Shigeharu Miyata; Takehara Shin; Hideki Sakai; Takahiro Ishikawa (ICARCV, 2012)

Flexible Polymer-Wall-Stabilized Blue-Phase Liquid Crystal Cell Using Plastic Substrates. - Hideki Sakai; Takahiro Ishinabe; Hideo Fujikake (IEICE Trans. Electron., 2015)