Nonlinear filtering of noisy interference fringes with the 2D spatially dependent filter impulse response

Igor P. Gurov; Mikhail V. Volkov

doi:10.1117/12.464481

1 April 2002 Nonlinear filtering of noisy interference fringes with the 2D spatially dependent filter impulse response

Igor P. Gurov, Mikhail V. Volkov

Proceedings Volume 4750, ICONO 2001: Quantum and Atomic Optics, High-Precision Measurements in Optics, and Optical Information Processing, Transmission, and Storage; (2002) https://doi.org/10.1117/12.464481
Event: XVII International Conference on Coherent and Nonlinear Optics (ICONO 2001), 2001, Minsk, Belarus

Abstract

Image enhancement and evaluation play an important role in modern information and measurement technologies. An important image kind is obtained in coherent systems in holography and interferometry in the form of fringe patterns. Because of the physical and technical limitations fringe patterns are often distorted under the noise influence. It is proposed new noise-immune method for fringe pattern enhancement and evaluation. Unlike conventional filtering methods, in this method a filter impulse response is formed by the local empirical histogram modification with the spatial weighting function inside a dimensionally-varied area dependent on the local fringe intensity distribution. High efficiency of the method was verified experimentally when processing real noisy distorted fringe patterns.

Citation Download Citation

Igor P. Gurov and Mikhail V. Volkov "Nonlinear filtering of noisy interference fringes with the 2D spatially dependent filter impulse response", Proc. SPIE 4750, ICONO 2001: Quantum and Atomic Optics, High-Precision Measurements in Optics, and Optical Information Processing, Transmission, and Storage, (1 April 2002); https://doi.org/10.1117/12.464481

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