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EDGE-PRESERVING SPECKLE TEXTURE REMOVAL BY INTERFERENCE-BASED SPECKLE FILTERING FOLLOWED BY ANISOTROPIC DIFFUSION
(ELSEVIER SCIENCE INCNEW YORK, 2012)
Ultrasonography has an inherent noise pattern, called speckle, which is known to hamper object recognition for both humans and computers. Speckle noise is produced by the mutual interference of a set of scattered wavefronts. ...
One dimensional speckle fields generated by three phase level diffusers
(Iop Publishing, 2015-01)
Speckle patterns have usually been obtained by using ground glass as random diffusers. Liquid-crystal spatial light modulators have opened the possibility of engineering tailored speckle fields obtained from designed ...
Influence of photo-detector’s dead-time on the speckle contrast for blood flow measurement
(Centro de Ciencias Aplicadas y Desarrollo Tecnológico, 2016)
Influence of ultrasound speckle tracking strategies for motion and strain estimation
(Elsevier Science, 2016-08)
Speckle Tracking is one of the most prominent techniques used to estimate the regional movement of the heart based on ultrasound acquisitions. Many different approaches have been proposed, proving their suitability to ...
Two simple methods for overall determination of mobility in dynamic speckle patterns
(Elsevier, 2013-12)
In this work, we present two simple methods to quantify the mobility of dynamic speckle patterns. The first method is based on the averaged pixel intensity differences between subsequent frames, while the second simply ...
Analysis of tilt by modulated speckles generated with a double aperture pupil mask
(Elsevier Science, 2015-03)
We present a method based on modulated speckles to detect tilt movement of a diffusing surface. In our proposal a speckle image of the speckle produced by a reflective diffusing surface is formed by a lens having a double ...