• Acta Optica Sinica
  • Vol. 41, Issue 16, 1612004 (2021)
Yuemin Wang1、2, Zonghua Zhang1、*, Feng Gao2, Yongjia Xu2, Nan Gao1, Zhaozong Meng1, and Xiangqian Jiang2
Author Affiliations
  • 1School of Mechanical Engineering, Hebei University of Technology, Tianjin 300130, China
  • 2Centre for Precision Technologies, University of Huddersfield, Queensgate Huddersfield West Yorkshire HD1 3DH UK
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    DOI: 10.3788/AOS202141.1612004 Cite this Article Set citation alerts
    Yuemin Wang, Zonghua Zhang, Feng Gao, Yongjia Xu, Nan Gao, Zhaozong Meng, Xiangqian Jiang. Three-Dimensional Measurement of Discontinuous Specular Object Based on Feature Matching[J]. Acta Optica Sinica, 2021, 41(16): 1612004 Copy Citation Text show less

    Abstract

    This paper presents a three-dimensional (3D) measurement method for discontinuous specular objects based on feature matching, which can not only avoid the integration errors between discontinuous surfaces, but ensure the high accuracy. First, the image segmentation method and stereo deflectometry technique are applied to separate the discontinuous specular object into several continuous surfaces and calculate the 3D shape of each area independently by slope integration. Then, the binocular vision technology is utilized to obtain the absolute spatial coordinates of the feature points to accurately evaluate the relative positions between continuous surfaces. Meanwhile, a feature matching method combining epipolar constraint and feature descriptor is proposed to overcome the problem of poor matching rate of non-texture specular objects. Finally, the 3D shape of the measured object is reconstructed by combing the topography and absolute spatial position of each surface. Experimental results show that the method can obtain better results without texture matching and can achieve high precision measurement of discontinuous specular object.
    Yuemin Wang, Zonghua Zhang, Feng Gao, Yongjia Xu, Nan Gao, Zhaozong Meng, Xiangqian Jiang. Three-Dimensional Measurement of Discontinuous Specular Object Based on Feature Matching[J]. Acta Optica Sinica, 2021, 41(16): 1612004
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