Laser & Optoelectronics Progress, Volume. 61, Issue 10, 1011013(2024)

Three-Dimensional Shape Measurement of Moving Object with Color Fringe Projection

Hongzhi Xu1, Yu Wang1, Lingling Yang1, Lu Liu1,2,3, and Wenhui Hou1、*
Author Affiliations
  • 1College of Engineering, Anhui Agricultural University, Hefei 230036, Anhui , China
  • 2Anhui Province Engineering Laboratory of Intelligent Agricultural Machinery and Equipment, Hefei 230036, Anhui , China
  • 3Hefei Institute of Technology Innovation Engineering, Chinese Academy of Sciences, Hefei 230094, Anhui , China
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    Phase-shifting profilometry (PSP) is a well-established technique for the accurate measurement of three-dimensional (3D) shapes. Nonetheless, it faces a significant challenge when the object under study experiences motion, as this can alter the phase-shifts between adjacent fringes, introducing periodic errors known as motion-induced errors. A three-dimensional measurement method for moving objects based on color stripe projection is proposed to address the above issues. This method encodes cosine and sine fringes into the red and blue channels of color images, respectively. Then, a phase shift algorithm is used to extract two phase maps with reverse motion errors from the two color channels. Finally, the average phase map is calculated to compensate for periodic motion errors, and the impact of color crosstalk on this method is further analyzed. Both simulation and real experimental results show that the proposed method can effectively suppress motion errors, achieve accurate three-dimensional measurement of moving objects, and is less affected by color crosstalk.

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    Hongzhi Xu, Yu Wang, Lingling Yang, Lu Liu, Wenhui Hou. Three-Dimensional Shape Measurement of Moving Object with Color Fringe Projection[J]. Laser & Optoelectronics Progress, 2024, 61(10): 1011013

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    Paper Information

    Category: Imaging Systems

    Received: Oct. 13, 2023

    Accepted: Jan. 4, 2024

    Published Online: Apr. 29, 2024

    The Author Email: Wenhui Hou (hwh303@ahau.edu.cn)

    DOI:10.3788/LOP232305

    CSTR:32186.14.LOP232305

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