speckle


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.
Related to speckle: Speckle interferometry

speckle

(spĕk′əl)
n.
A speck or small spot, as a natural dot of color on skin, plumage, or foliage.

speck′le v.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

speckle

A grainy distortion (a kind of “noise”) in an ultrasonographic image.
Medical Dictionary, © 2009 Farlex and Partners
References in periodicals archive ?
In this study, a novel adaptive speckle noise reduction algorithm using anisotropic diffusion filter based on Haar wavelet transform and the median absolute deviation was proposed.
In this paper examined about the speckle noise model, the proposed NDWT algorithm for speckle suppression in SAR imagery and results and discussion of proposed methodology.
After that, we can get the speckle by performing the fast Fourier transform of the resulting matrix.
We have shown above that the problem of finding speckle intensity distribution for wave propagation in inhomogeneous media can be mapped to the problem of mixing in incompressible flows.
They used a miniature high-speed camera to record the fluctuating speckle pattern.
It has been applied to measure the transient phenomena by moire interferometry [35] and speckle interferometry.
Burckhardt, "Speckle in ultrasound B-mode scans," IEEE Transactions on Sonics and Ultrasonics, vol.
Although the light scattering method has discovered applications in the characterizations of the dynamic laser speckle from a magnet fluibuiltd [13,14], the contrast of the speckle or the scattering intensity may open only a general observation to the bulk magnet solution.
Classical despeckling methods such Lee [11], Frost [12] and Gamma-MAP [13] use a priori statistical information of speckle noise.
Two-dimensional speckle tracking echocardiography (STE) allows the study of regional myocardial deformation expressed by strain and strain rate.