Title :
Evaluation of complicated fringe patterns by the nonlinear data-dependent fringe processing method
Author :
Gurov, Igor ; Volkov, Mikhail
Author_Institution :
Comput. Technol. Dept., Saint Petersburg State Univ. of Inf. Technol., Mech. & Opt., Russia
Abstract :
The possibilities of a new fringe evaluation method were explored. The method is based on estimating locally the fringe step and orientation that allows forming the 2D data-dependent anisotropic impulse response of a spatial filter to suppress noise influence without decreasing fringe visibility. The high noise-immunity of the proposed method was verified experimentally when processing complicated fringe patterns by recovering the full fringe phase.
Keywords :
holographic interferometry; image denoising; image reconstruction; light interferometry; moire fringes; spatial filters; transient response; 2D data-dependent impulse response; anisotropic impulse response; fringe pattern analysis; fringe processing procedures; fringe visibility; full fringe phase recovery; holographic techniques; interferometric techniques; local fringe orientation; local fringe step; noise suppression; nondestructive testing; nonlinear data-dependent processing method; optical metrology; spatial filter; Adaptive optics; Amplitude estimation; Anisotropic magnetoresistance; Geometrical optics; Holographic optical components; Holography; Nonlinear optics; Optical distortion; Optical interferometry; Optical sensors;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2004. IMTC 04. Proceedings of the 21st IEEE
Print_ISBN :
0-7803-8248-X
DOI :
10.1109/IMTC.2004.1351312
