19 December 2013 Study on optical 3D angular deformations measurement
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Abstract
3D angular deformations will be inevitable when ships are sailing, due to the changes of the environmental temperature and external stresses. The measurement of 3D angular deformations is one of the most critical and difficult issues in navy and shipbuilding industry around the world. In this paper, we propose an optical method to measure 3D ship angular deformations and discuss the measurement errors in detail. Theoretical analysis shows that the measured errors of the pitching and yawing deformations are induced by the installation errors of the image aperture, and the measured error of the rolling deformation depends on the subpixel location algorithm in image processing. It indicates that the measured errors of the optical measurement proposed in this paper are at the magnitude of angular seconds, when the elaborated installation and precise image processing technology are both performed.
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Yang Gao, Yang Gao, Xingshu Wang, Xingshu Wang, Zongsheng Huang, Zongsheng Huang, Jinliang Yang, Jinliang Yang, } "Study on optical 3D angular deformations measurement", Proc. SPIE 9046, 2013 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 90460U (19 December 2013); doi: 10.1117/12.2036317; https://doi.org/10.1117/12.2036317
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