Holographic fringe-contrast interferometry

Matczak, Marek J.

doi:10.1016/0143-8166(88)90020-6

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2017

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(2 citation statements)

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“…The method based on the filtration of the Fourier spectrum was proposed in [2]. This approach assumes separation of the spectral ranges of the individual components of (1), which is not exactly fulfilled in real conditions.…”

Section: Fourier Methodsmentioning

confidence: 99%

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Comparison of Methods for Determining the Contrast Distribution in Interference Images with Speckle Noise

2017

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Information about certain physical states of an examined object is encoded in the distribution of the fringe contrast in the metrological interference images of the object. Determining the contrast is one of the steps of converting the image into the distribution of the measured quantity in holographic fringe-contrast interferometry. In this paper, three methods of determining the fringe contrast in interference images containing speckle noise are compared. As the criterion for comparing the methods, the mean absolute error has been used. It turns out, in accordance with this criterium, the most effective method is the phase-shifting one.

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Section: Fourier Methodsmentioning

confidence: 99%

“…The distribution of the fringe contrast V (x, y) is the carrier and the source of information used in the fringecontrast interferometry [1,2], whose recorded images are characterized by the following distribution of the light intensity [2]:…”

Section: Introductionmentioning

confidence: 99%