Auto-Identification of Symmetrical Contours on ICT Image in Reverse Engineering

Abstract:

Through considering the symmetry constraint characteristics in mechanical product contours, an auto-identification method of two-dimensional symmetrical contour based on feature matching is presented in this paper. Firstly, the feature points are extracted based on contour cloud point data partition and by using offset method, the different distribution rules of axis-symmetrical and rotation-symmetrical images for judging the type of symmetry was studied. The feature description parameters of symmetrical contour were calculated by adopting rotational inertia method and periodic method, which is regarded as the parameters for solving overall constraint optimization of the contour. Examples show that the proposed method can effectively identify the symmetrical contours and their types, and accurately extract the symmetrical constraint features.

• Periodical: Applied Mechanics and Materials (Volumes 401-403)
• Pages: 1341-1346
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.401-403.1341
• Online since: September 2013
• Authors: Guang Shuai Liu, Bai Lin Li
• Keywords: Feature Matching, ICT Image, Reverse Engineering (RE), Symmetrical Contour

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