MAPT: network address and port translation approach to IP multicast and its application to public wireless LANs. - Ryo Kitahara; Hidetoshi Ueno; Hideharu Suzuki; Norihiro Ishikawa; Takaaki Komura; Kenji Fujikawa; Haruo Takagi (IWCMC, 2006)

A Fast, Robust Watermark Detection Scheme for Videos Captured on Camera Phones. - Takao Nakamura; Susumu Yamamoto; Ryo Kitahara; Atsushi Katayama; Takayuki Yasuno; Noboru Sonehara (ICME, 2007)