ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)

vol 63 / September, 2020

DOI 10.17586/0021-3454-2016-59-8-645-650

UDC 62-503.55: 539.3/.6: 004.93


A. D. Perechesova
ITMO University, Department of Mechatronics;

I. I. Kalapyshina
Saint Petersburg National Research University of Information Technologies, Mechanics and Optics; postgraduate

G. A. Solovieva
ITMO University; Department of Mechatronics; Post-Graduate Student

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Abstract. An algorithm of image recognition based on segmentation method with the use of Hough transform is proposed. The algorithm is created for development of optical-design method of evaluation of physical-mechanical characteristics of helical elements of helically-anisotropic torsion bar on the basis of tensile test experiments. Aramid fiber torsion is considered as a spirally anisotropic rod. A high-speed video camera CamRecord CR4503 Optronis is used in the study. Computer processing of images based on computer vision algorithms allows to determine the axes of elastically equivalent elements of the torsion and their deviation from the main axis. As a result of the algorithm angle of the elements inclination and variation of the angle in the process of deformation under the action of longitudinal force is determined. The obtained values are used for description of deformation process of spirally-anisotropic bodies, in particular when evaluating the changes of the shear modulus.
Keywords: segmentation method, Hough transform, image recognition, microfilament aramid fiber, spirally-anisotropic rod, torsion, tensile test experiment, high-speed camera

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