• Opto-Electronic Engineering
  • Vol. 37, Issue 3, 144 (2010)
REN Wei-feng*, SU Xian-yu, and XIANG Li-qun
Author Affiliations
  • [in Chinese]
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    DOI: 10.3969/j.issn.1003-501x.2010.03.027 Cite this Article
    REN Wei-feng, SU Xian-yu, XIANG Li-qun. 3-D Surface Shape Restoration for Breaking Surface of Dynamic Process Based on Two-frequency Grating[J]. Opto-Electronic Engineering, 2010, 37(3): 144 Copy Citation Text show less

    Abstract

    In the quick change process of impact or blast, sampling rate of CCD is lower than object move rate, which result in deficiency of CCD’s sampling. A novel method based on Fourier Transform Profilometry (FTP) was proposed, in which a two-frequency sine patterns is projected onto the object and the deformed fringe is captured by CCD. Some problems caused by deficiency of sampling and breaking fringes were solved in 3-D phase unwrapping by using the low-frequency grating unwrapping phase marked fringes. The same rank of high-frequency deformed fringes was tracked by marked fringes, and 3-D phase unwrapping by high-frequency grating fringes was obtained. Computer simulation experiment and glazed tile rupture experiment proves the feasibility of this method.
    REN Wei-feng, SU Xian-yu, XIANG Li-qun. 3-D Surface Shape Restoration for Breaking Surface of Dynamic Process Based on Two-frequency Grating[J]. Opto-Electronic Engineering, 2010, 37(3): 144
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