speckle


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Related to speckle: Speckle interferometry
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Synonyms for speckle

Synonyms for speckle

produce a mottled effect

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mark with small spots

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References in periodicals archive ?
presented that linear and median filters didn't preserve edge of images degraded with speckle noise [9].
The patent schematics show a laser speckle interferometric system for a mobile device that includes a laser light source, a detector, processing and memory units, as well as a screen for displaying the data.
Speckle noise removal helps in Automatic Target Recognition, which involves detection and classification of SAR image.
Reproducibility of non-invasive assessment of skin endothelial function using laser Doppler flowmetry and laser speckle contrast imaging.
Using optimised scattering materials, they produce the finest-grained speckles yet made with visible light.
When the material that is scattering the light is moving-say, in the case of blood flowing through the circulatory system-"the speckle pattern changes with changes in the flow," explained biomedical engineer Mahsa Nemati, a graduate student in the Optics Research Group at the Delft University of Technology in the Netherlands and the lead author of the Biomedical Optics Express paper on monitoring pulse.
In unclotted blood, these light scattering particles move easily about, making the pattern of scattered light called a speckle pattern fluctuate rapidly.
[20] developed a phase shifting speckle interferometer operated at 1 k Hz capturing rate using a high-speed camera.
These echoes trigger constructive and destructive interferences and generate speckle patterns in the ultrasound images [1].
Instead, it is possible to use noncontact and nondestructive method based on the laser speckle technique [9-12].
In coherent systems, backscatter signals add to each other coherently, and random interference of electromagnetic signals causes the speckle noise [1].
Speckle tracking echocardiographic evaluation of right ventricular free wall revealed decreased regional longitudinal strain value of -10 (Fig.