On the morphology of irregular rough particles from the analysis of speckle-like interferometric out-of-focus images

被引:63
|
作者
Brunel, Marc [1 ]
Ruiz, Sara Gonzalez [2 ]
Jacquot, Justin [1 ]
van Beeck, Jeroen [2 ]
机构
[1] CORIA, UMR CNRS 6614, F-76801 St Etienne, France
[2] Von Karman Inst Fluid Dynam, B-1640 Rhode St Genese, Belgium
关键词
Interferometric out-of focus imaging; Optical transfer matrices; Rough objects; Morphology; LIGHT-SCATTERING; DROPLETS; SIZE;
D O I
10.1016/j.optcom.2014.10.053
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Using a simplified description, we show that the Fourier transform of the speckle-like out-of-focus image of an irregular rough particle is given by the 2 dimensional-autocorrelation of the shape of the particle. Experiments confirm well this result. Using a matrix transfer based-formulation, we further determine the exact scaling factors between both functions, whatever the imaging system is. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:193 / 198
页数:6
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