Results 31 to 40 of about 3,337,138 (296)

Deep Learning for Integrated Speckle Reduction and Super-Resolution in Multi-Temporal SAR

open access: yesRemote Sensing, 2023
In the domain of synthetic aperture radar (SAR) image processing, a prevalent issue persists wherein research predominantly focuses on single-task learning, often neglecting the concurrent impact of speckle noise and low resolution on SAR images ...
Lijing Bu   +4 more
doaj   +1 more source

Speckle Reduction on Ultrasound Liver Images Based on a Sparse Representation over a Learned Dictionary

open access: yesApplied Sciences, 2018
Ultrasound images are corrupted with multiplicative noise known as speckle, which reduces the effectiveness of image processing and hampers interpretation.
Mohamed Yaseen Jabarulla, Heung-No Lee
doaj   +1 more source

SAR Image Change Detection Based on Nonlocal Low-Rank Model and Two-Level Clustering

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Change detection (CD) has found a wide range of applications in many fields. In this article, we propose a novel nonlocal low-rank (NLR) based method for multitemporal synthetic aperture radar image CD. This method jointly exploits the powerful NLR-based
Yuli Sun   +4 more
doaj   +1 more source

Reduction of Multiplicative Noise in Radar Images

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2021
Introduction. A radar image is an image obtained by remote sensing the earth's surface with a radar device. Radar images are characterized by background graininess caused by speckle noise, which should be filtered to improve the quality of radar images ...
A. A. Tuzova, V. A. Pavlov, A. A. Belov
doaj   +1 more source

Non-Local Means De-Speckling Based on Multi-Directional Local Plane Inclination Angle

open access: yesRemote Sensing, 2023
The unavoidable speckle in SAR images seriously interferes with image quality and has a negative effect on subsequent image interpretation. The existing filters still need to be strengthened in terms of both noise suppression and edge preservation. Based
Fengcheng Guo, Haoran Tang, Wensong Liu
doaj   +1 more source

Gaze-contingent holographic speckle reduction

open access: yes, 2020
Code for subjective user evaluation of "gaze-contingent holographic speckle ...
Chakravarthula, Praneeth   +2 more
core   +1 more source

Speckle Reduction in Projection Systems [PDF]

open access: yes, 2009
A speckle pattern is a quasi-random interference pattern which typically emerges when lasers are used as illumination sources in projection applications and which severely degrades the image quality.
Riechert, Falko
core   +1 more source

Laser speckle photometry - Contactless nondestructive testing technique

open access: yes, 2022
Paper 84130XLaser Speckle Photometry (LSP) is a newly developed contactless, fast and completely optical nondestructive testing method based on the detection and analysis of thermally or mechanically activated characteristic speckle dynamics.
Schreiber, Jürgen   +3 more
core   +1 more source

Deep Learning-Based Ultrasound Image Despeckling by Noise Model Estimation [PDF]

open access: yesIranian Journal of Electrical and Electronic Engineering, 2023
Speckle noise is an inherent artifact appearing in medical images that significantly lowers the quality and accuracy of diagnosis and treatment.
O. Mahmoudi Mehr   +2 more
doaj  

Methods for Determination of Mean Speckle Size in Simulated Speckle Pattern

open access: yesMeasurement Science Review, 2014
This paper deals with computation of mean speckle size in a speckle pattern generated through a numerical simulation of speckle after reflection of a Gaussian beam off a rough object’s surface. Within this simulation various speckle patterns are obtained
Hamarová I.   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy