Donggeun Cha, Woojin Chung
(School of Mechanical Engineering, Korea University, Seoul 136-701, Korea)
Abstract： Obstacle detection is essential for mobile robots to avoid collision with obstacles. Mobile robots usually operate in indoor environments, where they encounter various kinds of obstacles; however, 2D range sensor can sense obstacles only in 2D plane. In contrast, by using 3D range sensor, it is possible to detect ground and aerial obstacles that 2D range sensor cannot sense. In this paper, we present a 3D obstacle detection method that will help overcome the limitations of 2D range sensor with regard to obstacle detection. The indoor environment typically consists of a flat floor. The position of the floor can be determined by estimating the plane using the least squares method. Having determined the position of the floor, the points of obstacles can be known by rejecting the points of the floor. In the experimental section, we show the results of this approach using a Kinect sensor.
Key words： 3D obstacle detection; mobile robot; Kinect sensor
CLD number： TP242.6 Document code： A
Article ID： 1674-8042(2013)04-0381-04 doi： 10.3969/j.issn.1674-8042.2013.04.017
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