Masayoshi Kakikura

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This paper describes an ultrasonic tagging system developed for robustly observing human activity in a living area. Using ultrasonic transmitter tags with unique identifiers, the system is shown through experimental application to be able to track the three-dimensional motion of tagged objects in real time with high accuracy, resolution and robustness to(More)
This paper presents some advanced examples of reactive vision-based cooperative behaviors: (1) Chasing and posing against another robot among others, (2) Unblocking the path of another robot by removing an obstacle, (3) Passing an object from one to another. These behaviors are demonstrated using real mobile robots equipped with CCD cameras, in a complex(More)
A novel framework for multiple robot cooperation called \Cooperation by Observation" is presented. It introduces many interesting issues such as viewpoint constraint and role interchange, as well as novel concepts like \attentional structure". The framework has the potential to realize a high level of task coordination by decentralized autonomous robots(More)
In order to construct an intelligent robot system, the implementation of sensor systems is a prime requirement. With the increasing demands for hand-eye coordinating systems, problems of how to design, construct, and utilize hand-eye systems effectively have been realized which have to be solved. For example, teaching tasks to a hand-eye system requires(More)
Measurement of gaze is effective to evaluate human operator's attention, one's operation skills, perceptional capability and so on. Especially, gaze duration, called fixation time, is often utilized. Generally, it is said that long fixation time is detected when the operator pays attention to something intentionally. However, the duration also depends on(More)
Most of studies on path planning assume a wheeled robot as the vehicle. However, the robot is allowed to only make a detour for obstacle avoidance that often includes inefficiency. This research focuses that a walking robot has a high adaptation on irregular terrain and ability to transform the robot posture during walk. Therefore, the walking robot follows(More)