Study of image characteristics on digital image correlation error assessment [PDF]
, 2009 In this paper, errors related to digital image correlation (DIC) technique applied to measurements of displacements are estimated. This work is based on the generation of synthetic images representative of real speckle patterns.
Dalverny, Olivier +3 more
core +3 more sources
On-sky speckle nulling demonstration at small angular separation with SCExAO [PDF]
, 2014 This paper presents the first on-sky demonstration of speckle nulling, which was achieved at the Subaru Telescope in the context of the Subaru Coronagraphic Extreme Adaptive Optics (SCExAO) Project.
Clergeon, Christophe +9 more
core +5 more sources
Speckle-interferometry and speckle-correlometry of GB-speckles
Frontiers in Bioscience, 2019 A new method of coding of genetic information using laser speckles has been developed. Specific technique of transforming the nucleotide of gene into a speckle pattern (gene-based speckles or GB-speckles) is suggested. Reference speckle patterns of omp1 gene of typical wild strains of Chlamydia trachomatis of genovars D, E, F, G, and J are generated ...
Onega V, Ulianova +7 more
openaire +2 more sources
Statistical Properties of an Unassisted Image Quality Index for SAR Imagery
Remote Sensing, 2019 The M estimator is a recently proposed image-quality index used to evaluate the despeckling operation in SAR (Synthetic Aperture Radar) data. It is used also to rank despeckling filters and to improve their design.
Luis Gomez +2 more
doaj +1 more source
Speckle Interferometry, Speckle Masking, Speckle Spectroscopy and Speckle Frame Selection [PDF]
International Astronomical Union Colloquium, 1984 AbstractHigh-resolution speckle imaging is one of the most fascinating possibilities of a Very Large Telescope (VLT). Various speckle methods can yield a resolution of about 0.01" with a 8-m to 10-m VLT. As exiting as the resolution is the limiting magnitude of the speckle methods. The limiting magnitude is extremely seeingdependent.
openaire +1 more source
A new denoising technique for ultrasound images using morphological properties of speckle combined with tissue classifying parameters [PDF]
, 2002 In this paper we introduce a new speckle suppression technique for medical ultrasound images that incorporates morphological properties of speckle as well as tissue classifying parameters.
Lemahieu, Ignace +2 more
core +1 more source
Statistical Region Based Segmentation of Ultrasound Images [PDF]
, 2008 Segmentation of ultrasound images is a challenging problem due to speckle, which corrupts the image and can result in weak or missing image boundaries, poor signal to noise ratio, and diminished contrast resolution.
Ayed +30 more
core +3 more sources
Reducing speckle artifacts in digital holography through programmable filtration
ETRI Journal, 2019 We propose a speckle reduction technique in electronic holographic display systems, where digital micro‐mirror array devices are used as spatial light modulators.
Yongjun Lim +5 more
doaj +1 more source
Laser speckle reduction based on angular diversity induced by Piezoelectric Benders [PDF]
Journal of the European Optical Society-Rapid Publications, 2013 Speckle reduction techniques have been investigated in display systems with coherent light sources. We propose a simple but efficient method to reduce speckle via two fast vibrating piezoelectric benders.
Ouyang G. +4 more
doaj +1 more source
A Contrast Calibration Protocol for X-ray Speckle Visibility Spectroscopy
Applied Sciences, 2021 X-ray free electron lasers, with their ultrashort highly coherent pulses, opened up the opportunity of probing ultrafast nano- and atomic-scale dynamics in amorphous and disordered material systems via speckle visibility spectroscopy.
Yanwen Sun +13 more
doaj +1 more source