Abstract
This paper presents how to improve the visual recognition ability of SONY AIBO robot. AIBO is a general purpose quadruped robot and most users enjoy the robot through interactions with AIBO by means of a variety of sensors mounted thereon. The sensors include CMOS camera, infrared ranging sensor, microphone, accelerometer, many touch sensors and so on. This study focuses on use of the CMOS camera. Recognition task of the camera is sharply affected by ambient lighting conditions. In our approach, a shutter speed is adjusted so as to improve color recognition ability under different lighting conditions. The approach is verified through experiments under a variety of conditions.