Abstract
The continuous wavelet transform (CWT) has been used in fringe projection profilometry (FPP) to recover a three-dimensional surface from a single-frame fringe. This Letter constructs a two-dimensional (2D) continuous complex wavelet employing a 2D real Mexican hat wavelet function, combined with the single-orthant analytical 2D Hilbert transform. The 2D complex wavelet has an asymmetric frequency envelope in the radial direction and the ability of direction selectivity, which results in better matching between the local fringe and daughter wavelets. We provide a complex wavelet construction model, present a theoretical analysis, and conduct experimental validation. The experiments demonstrate that the proposed method provides high phase accuracy in the single-frame FPP method.
© 2021 Optical Society of America
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Mengqi Han and Wenjing Chen, "Two-dimensional complex wavelet with directional selectivity used in fringe projection profilometry: publisher’s note," Opt. Lett. 46, 4630-4630 (2021)https://opg.optica.org/ol/abstract.cfm?uri=ol-46-18-4630
31 August 2021: A typographical correction was made to the author listing.
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