Dynamic Integrated Transmission Control (DITRAC) over inter-vehicle communications in ITS. - Ryusuke Fukui; Hiroyuki Koike; Hkorni Okada (VTC Spring, 2002)

Recommendation algorithm focused on individual viewpoints. - Noriyuki Yamamoto; Mari Saito; Mitsuhiro Miyazaki; Hiroyuki Koike (CCNC, 2005)

Rate-distortion optimized image coding allowing lossless conversion to JPEG compliant bitstreams. - Ichiro Matsuda; Shunya Hashimoto; Hiroyuki Koike; Hisashi Aomori; Susumu Itoh (EUSIPCO, 2011)