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http://dx.doi.org/10.7736/KSPE.2015.32.6.543

Dimension Measurement for Large-scale Moving Objects Using Stereo Camera with 2-DOF Mechanism  

Cuong, Nguyen Huu (School of Mechanical Engineering, University of Ulsan)
Lee, Byung Ryong (School of Mechanical Engineering, University of Ulsan)
Publication Information
Journal of the Korean Society for Precision Engineering / v.32, no.6, 2015 , pp. 543-551 More about this Journal
Abstract
In this study, a novel method for dimension measurement of large-scale moving objects using stereo camera with 2-degree of freedom (2-DOF) mechanism is presented. The proposed method utilizes both the advantages of stereo vision technique and the enlarged visibility range of camera due to 2-DOF rotary mechanism in measuring large-scale moving objects. The measurement system employs a stereo camera combined with a 2-DOF rotary mechanism that allows capturing separate corners of the measured object. The measuring algorithm consists of two main stages. First, three-dimensional (3-D) positions of the corners of the measured object are determined based on stereo vision algorithms. Then, using the rotary angles of the 2-DOF mechanism the dimensions of the measured object are calculated via coordinate transformation. The proposed system can measure the dimensions of moving objects with relatively slow and steady speed. We showed that the proposed system guarantees high measuring accuracy with some experiments.
Keywords
Stereo vision; Moving object; Dimension measurement; Stereo calibration; Rotary mechanism;
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Times Cited By KSCI : 1  (Citation Analysis)
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