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Characterization of drying paint coatings by dynamic speckle and holographic interferometry measurements
(Optical Society of America, 2016-05)
In this work we implemented dynamic speckle and holographic interferometry techniques to characterize the drying process of solvent-based paint coatings. We propose a simple way to estimate drying time by measuring speckle ...
Transient process in ice creams evaluated by laser speckles
(ELSEVIER SCIENCE BV, 2010)
When a coherent light beam is scattered from a colloidal medium, in the observation plane, appears a random grainy image known as speckle pattern. The time evolution of this interference image carries information about the ...
Técnicas estatísticas aplicadas em imagens do speckle dinâmicoStatistic Techniques applied in dynamic speckle images
(UNIVERSIDADE FEDERAL DE LAVRASDEG - Programa de Pós-graduaçãoUFLABRASIL, 2014)
A descriptor of speckle textures using box fractal dimension curve
(Elsevier, 2018-02)
We propose a simple generalization of the box fractal dimension in images by considering the curve obtained from its value as a function of the binarization threshold. This curve can be used to partially describe ordinary ...
Activity speckle images obtained from box fractal formalism
(Elsevier, 2019-10)
We propose a generalized Box Fractal algorithm to segment activity speckle images. The time history of the intensity value at every pixel of the frames is taken as a time series. The plot of this time series is then ...
Vortex analysis in dynamic speckle images
(Optical Society of America, 2009-12)
Optical vortex analysis has become an important tool in optical metrology. It has been shown to be able to measure small displacements with up to nanometric precision. We analyze optical vortex behavior in dynamic speckle ...