Autonomous navigation for mobile robots referring pre-recorded image sequence. - Takayuki Ohno; Akihisa Ohya; Shin'ichi Yuta (IROS, 1996)

Obstacle detectability of ultrasonic ranging system and sonar map understanding. - Akihisa Ohya; Takayuki Ohno; Shin'ichi Yuta (Robotics Auton. Syst., 1996)