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Speckle photography through different multiaperture pupils 

Ángel Toro, Luciano; Tebaldi, Myrian Cristina; Bolognini, Néstor Alberto; Trivi, Marcelo Ricardo (SPIE/ 18th Congress of the International Commission for Optics, 1999-07-19)
An image multiplexing method based on the internal modulation of speckle grains by employing different multiple aperture pupils for recording is proposed. The interferometric fringes profile and visibility in the Fourier ...
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Double aperture speckle method using a BSO crystal for in plane displacement 

Trivi, Marcelo Ricardo; Tebaldi, Myrian Cristina; Bolognini, Néstor Alberto; Ángel Toro, Luciano (SPIE, 1999-07-06)
The possibility of using a BSO crystal as a recording medium of specklegrams with carrying frequency fringes, to storage multiple interferograms, for uniform in-plane displacements, is presented. Experimental results are ...
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Speckle interferometric technique to assess soap films 

Ángel Toro, Luciano; Bolognini, Néstor Alberto; Tebaldi, Myrian Cristina; Trivi, Marcelo Ricardo (Elsevier B.V., 2003-10-17)
An speckle interferometric technique to monitor the thinning process of vertical soap film before the film rupture is presented -- The interferometric arrangement consists in a double aperture pupil optical system which ...
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Analysis of vibrations in a plate using interferometric methods 

Ángel-Toro, Luciano; Prieto, Daniel Velasquez; Rueda Muñóz, Edgar Alberto (SPIE, 2004-10-21)
In this work some frequencies and modes of vibration of a thin plate were determined using interferometric methods like: real-time holographic interferometry, time-average holographic interferometry, digital speckle pattern ...
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Design of a control system for interferometric fringe stabilization system with remote access 

Espitia-Gómez, Javier; Ángel Toro, Luciano; Velásquez Prieto, Daniel (SPIE, 2013-11-18)
Stability in a fringe pattern is a necessary condition in interferometric processes, such as holography, and not always is enough the use of passive stabilization systems, like holographic tables, in particular, when ...
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Phase-difference images by digital holography applied to 3D surface contouring 

Velásquez-Prieto, Daniel; García Sucerquia, Jorge Iván (Academia Colombiana de Ciencias Exactas Físicas y Naturales, 2005-06)
The problem to determine the 3D-contour of objects with all sizes and shapes is a hot topic in diverse fields of optical research and engineering. Through the use of the numerical reconstruction of digital recorded holograms, ...
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Improvement of the signal-to-noise ratio in digital holography 

Velásquez-Prieto, Daniel; Herrera Ramírez, Jorge Alexis; García Sucerquia, Jorge Iván (Sociedad Mexicana de Física, 2005-02)
A fundamental problem in optical and digital holography is the presence of speckle noise in the reconstruction process, which essentially diminishes the signal to noise ratio (SNR). For many applications, that reduction ...
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Multiple-aperture speckle method applied to local displacement measurements 

Ángel-Toro, Luciano; Tebaldi, Myrian; Bologninic, Néstor (Elsevier B.V, 2007)
The goal of this work is to analyze the measurement capability of the modified speckle photography technique that uses different multiple aperture pupils in a multiple exposure scheme. In particular, the rotation case is ...

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Document typeDocumento de conferencia (5)Artículo (3)AuthorÁngel Toro, Luciano (4)Bolognini, Néstor Alberto (3)Tebaldi, Myrian Cristina (3)Trivi, Marcelo Ricardo (3)García Sucerquia, Jorge Iván (2)... View MoreSubject
Holographic interferometry (8)
INTERFEROMETRÍA HOLOGRÁFICA (8)Interferometry (4)Image processing - Digital techniques (3)INTERFEROMETRÍA (3)... View MoreDate Issued2010 - 2013 (1)2000 - 2009 (5)1999 - 1999 (2)

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