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23 May 2013 Dynamic properties of multispectral speckles in digital holography and image correlation
Mikael Sjodahl
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Optical Engineering, Vol. 52, Issue 10, 101908 (May 2013). https://doi.org/10.1117/1.OE.52.10.101908
Abstract
I discuss dynamic properties of multispectral speckle in the context of digital holographic interferometry and image correlation. I outline the correlation of speckles in free space, in an imaging system, and, in the case of interferometric detection, caused by reflection off an inclined diffuse surface. It is shown that interferometric phase gradients and speckle movements are closely related where in fact the phase gradients are the generator of speckle movements in a defocused plane. The theory is exemplified by three typical situations encountered in image-plane digital holographic interferometry.
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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Mikael Sjodahl "Dynamic properties of multispectral speckles in digital holography and image correlation," Optical Engineering 52(10), 101908 (23 May 2013). https://doi.org/10.1117/1.OE.52.10.101908
Published: 23 May 2013
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Cited by 15 scholarly publications.
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KEYWORDS
Speckle
Digital holography
Sensors
Digital image correlation
Digital imaging
Interferometry
Speckle pattern
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