Texture preservation and speckle reduction in optical coherence tomography using the shearlet-based total variation algorithm
Sign Up to like & getrecommendations! Published in 2019 at "Optics and Lasers in Engineering"
DOI: 10.1016/j.optlaseng.2019.06.014
Abstract: Abstract In optical coherence tomography (OCT), speckle residue, texture loss, and edge blur are the main factors that limit the image quality improvement during speckle reduction, especially for human retinal OCT images. This paper proposes… read more here.
Keywords: speckle reduction; preservation; method; texture ... See more keywords
Speckle reduction in ultrasound endoscopy using refraction based elevational angular compounding
Sign Up to like & getrecommendations! Published in 2021 at "Scientific Reports"
DOI: 10.1038/s41598-021-97717-2
Abstract: Endoscopic ultrasonography (EUS) is a safe, real-time diagnostic and therapeutic tool. Speckle noise, inherent to ultrasonography, degrades the diagnostic precision of EUS. Elevational angular compounding (EAC) can provide real-time speckle noise reduction; however, EAC has… read more here.
Keywords: based elevational; refraction based; angular compounding; speckle reduction ... See more keywords
Polarimetric SAR Speckle Reduction by Hybrid Iterative Filtering
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.2993902
Abstract: Speckle filtering in synthetic aperture radar polarimetry (PolSAR) is essential for the extraction of significant information. In this study, the authors introduced a hybrid iterative filtering scheme. The proposed iterative filter is initialized by a… read more here.
Keywords: hybrid iterative; tex math; speckle reduction; iterative filtering ... See more keywords
Noise-Powered Disentangled Representation for Unsupervised Speckle Reduction of Optical Coherence Tomography Images
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Medical Imaging"
DOI: 10.1109/tmi.2020.3045207
Abstract: Due to its noninvasive character, optical coherence tomography (OCT) has become a popular diagnostic method in clinical settings. However, the low-coherence interferometric imaging procedure is inevitably contaminated by heavy speckle noise, which impairs both visual… read more here.
Keywords: optical coherence; speckle reduction; disentangled representation; coherence ... See more keywords
Single-shot speckle reduction by elimination of redundant speckle patterns in digital holography.
Sign Up to like & getrecommendations! Published in 2020 at "Applied optics"
DOI: 10.1364/ao.390500
Abstract: Speckle reduction is a crucial technique, since the presence of speckle disturbs the quality of the reconstruction in digital holography. In this paper, we present a redundant speckle elimination method to suppress the speckle noise.… read more here.
Keywords: speckle reduction; speckle; digital holography; redundant speckle ... See more keywords
Speckle reduction using deformable mirrors with diffusers in a laser pico-projector.
Sign Up to like & getrecommendations! Published in 2017 at "Optics express"
DOI: 10.1364/oe.25.018140
Abstract: We propose a design for speckle reduction in a laser pico-projector adopting diffusers and deformable mirrors. This research focuses on speckle noise suppression by changing the angle of divergence of the diffuser. Moreover, the speckle… read more here.
Keywords: contrast value; speckle; speckle contrast; value ... See more keywords
Weak-scattering static diffuser by fast pumping dispersed-nanoparticles in a long distance using microfluidic flows for efficient laser speckle reduction.
Sign Up to like & getrecommendations! Published in 2018 at "Optics express"
DOI: 10.1364/oe.26.020270
Abstract: Changing diffusers are most commonly used for laser speckle reduction. Here, a weak-scattering static diffuser (WSSD) is proposed and demonstrated by fast pumping poly(methyl methacrylate) nanoparticles in a long distance using microfluidic flow. Experimental results… read more here.
Keywords: scattering static; speckle; weak scattering; laser speckle ... See more keywords
Speckle Reduction on Ultrasound Liver Images Based on a Sparse Representation over a Learned Dictionary
Sign Up to like & getrecommendations! Published in 2018 at "Applied Sciences"
DOI: 10.3390/app8060903
Abstract: Ultrasound images are corrupted with multiplicative noise known as speckle, which reduces the effectiveness of image processing and hampers interpretation. This paper proposes a multiplicative speckle suppression technique for ultrasound liver images, based on a… read more here.
Keywords: ultrasound liver; images based; liver images; sparse representation ... See more keywords