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Logic operations by using modulated speckle
(SPIE, 2001-08-14)
An alternative image multiplexing technique is proposed. In the arrangement implemented, the input is imaged by introducing a multiple aperture pupil in the imaging lens. Then, the speckle pattern is modulated by several ...
Propierties of speckle patterns generated through multiaperture pupils
(Elsevier, 2001-05-15)
The characteristics of the image speckles obtained through multiple aperture pupils are theoretically analyzed in terms of the parameters defining the pupils. The possibility of interpreting and synthesizing the image ...
Multiple rotation assessment through isothetic fringes in speckle photography
(OSA, 2007-04-20)
The use of different pupils for storing each speckled image in speckle photography is employed to determine multiple in-plane rotations. The method consists of recording a four exposure specklegram where the rotations are ...
Optical processing by fringed speckles registered in a BSO crystal
(SPIE, 2000-07-28)
An alternative image multiplexing technique, employing a multiple-aperture pupil for each exposure, is presented. The aperture arrangement of the pupil is modified between exposures. A thick photorefractive BSO crystal is ...
Soap film analysis by speckle interferometer
(SPIE, 2003-11-18)
In this paper a soap film is characterized by using a speckle interferometer. The arrangement consists of a double-exposure specklegram obtained through a double-aperture system, by introducing a wedge in front of one ...
Features on photorefractive registered speckles
(SPIE, 1999-04-29)
The recording and read-out of a volume speckle pattern is investigated for transmission geometry. The modulation of the 3D speckle grains appears when the image of a coherently illuminated random diffusor is formed onto ...
