Novel approaches based on windowed Fourier transform for demodulation of fringe patterns were previously presented [Appl. Opt. 43, 2695–2702 (2004)], where extraction of phase and phase derivatives from either phase-shifted fringe patterns or a single-carrier fringe pattern was the main focus. I show that the same methods can be applied to process a single closed-fringe pattern in either noise reduction or phase approximation, which adds to the versatility of the windowed Fourier-transform method for fringe pattern analysis.
© 2004 Optical Society of America
(100.2650) Image processing : Fringe analysis
(100.5070) Image processing : Phase retrieval
(100.7410) Image processing : Wavelets
(120.3940) Instrumentation, measurement, and metrology : Metrology
(300.6300) Spectroscopy : Spectroscopy, Fourier transforms
Qian Kemao, "Windowed Fourier Transform for Fringe Pattern Analysis: Addendum," Appl. Opt. 43, 3472-3473 (2004)