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Hosun Lee - IEEE Xplore Author Profile

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A hallmark of biological systems is their ability to self-calibrate sensory-motor loops during their development. Understanding the principles of such self-calibration will enable the design of robots with similar autonomous learning abilities. Here we consider the problem of active depth perception based on motion parallax. When an observer moves sideways while looking at an object with a single ...Show More
Toward a global picture of the radiation exposure of an area, particularly for fast emergency response, a UAV based exploration method is proposed. Without a priori knowledge of the radiation field, it is difficult to select the region of interest (ROI) which includes all radiation sources. For the case of a single radiation source, a greedy algorithm may localize the source by finding the maximum...Show More
In motion planning and robot navigation, continuous domain would be the natural way of representation of state space. However, discretization is needed in order to deal with continuous state space. Results precision depends on the discretization, which leads to a problem of “curse of dimensionality”. We present a new approximation approach of goal-directed imitation learning algorithm using the po...Show More
One of the main reasons for using a joint torque sensor in a robot is to measure body forces acting on the system. Especially, the motor actuating torque and the external link torque are important for a flexible joint control. However, it is difficult to measure or estimate those two torques simultaneously with a single joint torque sensor only due to the lack of information. In this paper, Kalman...Show More