Manabu Araoka

Localization and Obstacles Detection Using Omni-directional Vertical Stereo Vision

This paper describes an omni-directional vertical stereo vision system for an autonomous mobile robot. The system is composed of two omni-directional cameras and enables both the localization with wide range of view and the obstacles detection by 3D measurement of arbitrary direction. The system architecture and an experimental result are shown.

On-line Navigation of Mobile Robot Among Moving Obstacles Using Ultrasonic Sensors

This paper proposes a realistic on-line navigation method of the mobile robot in dynamical environment where multiple obstacles are always changing their velocities. Considering characteristics of actual sensor system, a method to estimate the velocity of moving obstacles is presented. The estimated velocity and measured distance from the nearest obstacle are used to plan a velocity of mobile robot based on a new idea of Collision Possibility Cone(CPC). Then an on-line navigation method is proposed by using CPC and feasible velocity space of mobile robot. Simulational examples show an effectiveness of the new navigation.