Illumination-invariant retrieval of multicolored object using sampled spectrum image. - Kousuke Moriwaki; Kotaro Nakatani (Syst. Comput. Jpn., 2000)

Passive Step-Climbing Mechanism for a Mobility Aid. - Jin-Kyu Choi; Choong Sik Park; Takahiro Kitagawa; Kotaro Nakatani; Haruo Sugii (Adv. Robotics, 2009)