• Acta Optica Sinica
  • Vol. 36, Issue 4, 412006 (2016)
Xu Dongying1、2、*, Li Sikun1、3, Wang Xiangzhao1、3, and Wang Kaiwei2
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
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    DOI: 10.3788/aos201636.0412006 Cite this Article Set citation alerts
    Xu Dongying, Li Sikun, Wang Xiangzhao, Wang Kaiwei. Wavelet Ridge Extraction Method Employing a Cost Function in Two-Dimensional Wavelet Transform Profilometry[J]. Acta Optica Sinica, 2016, 36(4): 412006 Copy Citation Text show less

    Abstract

    Wavelet ridge extraction is a key step in the wavelet transform profilometry. The speed and noise suppression capability of the wavelet ridge extraction method directly influences the wavelet transform profilometry. One new wavelet ridge extraction method used in the two-dimensional wavelet transform profilometry is proposed based on a new evaluation function. This function is established by using the module information from the wavelet transform coefficients, fringe instantaneous frequency and local fringe direction to improve the noise suppression capability. Moreover, one fast dynamic optimization algorithm is adopted to improve the wavelet ridge extraction speed. Computer simulation and experimental demonstration verify the proposed method’s effectiveness.
    Xu Dongying, Li Sikun, Wang Xiangzhao, Wang Kaiwei. Wavelet Ridge Extraction Method Employing a Cost Function in Two-Dimensional Wavelet Transform Profilometry[J]. Acta Optica Sinica, 2016, 36(4): 412006
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