Results 1 to 10 of about 6,617 (256)

Sparse Representation-Based Multi-Focus Image Fusion Method via Local Energy in Shearlet Domain [PDF]

open access: yesSensors, 2023
Multi-focus image fusion plays an important role in the application of computer vision. In the process of image fusion, there may be blurring and information loss, so it is our goal to obtain high-definition and information-rich fusion images.
Liangliang Li   +3 more
doaj   +3 more sources

X-ray Image Enhancement Based on Nonsubsampled Shearlet Transform and Gradient Domain Guided Filtering [PDF]

open access: yesSensors, 2022
In this paper, we propose an image enhancement algorithm combining non-subsampled shearlet transform and gradient-domain guided filtering to address the problems of low resolution, noise amplification, missing details, and weak edge gradient retention in
Tao Zhao, Si-Xiang Zhang
doaj   +3 more sources

Multimodality Medical Image Fusion Using Clustered Dictionary Learning in Non-Subsampled Shearlet Transform [PDF]

open access: yesDiagnostics, 2023
Imaging data fusion is becoming a bottleneck in clinical applications and translational research in medical imaging. This study aims to incorporate a novel multimodality medical image fusion technique into the shearlet domain.
Manoj Diwakar   +7 more
doaj   +3 more sources

$p$-adic Dual Shearlet Frames [PDF]

open access: yesSahand Communications in Mathematical Analysis, 2019
We introduced the continuous and discrete $p$-adic shearlet systems. We restrict ourselves to a brief description of the $p$-adic theory and shearlets in real case.
Mahdieh Fatemidokht   +1 more
doaj   +3 more sources

Bankline detection of GF-3 SAR images based on shearlet [PDF]

open access: yesPeerJ Computer Science, 2021
The GF-3 satellite is China’s first self-developed active imaging C-band multi-polarization synthetic aperture radar (SAR) satellite with complete intellectual property rights, which is widely used in various fields.
Zengguo Sun   +4 more
doaj   +3 more sources

Bendlet Transform Based Adaptive Denoising Method for Microsection Images [PDF]

open access: yesEntropy, 2022
Magnetic resonance imaging (MRI) plays an important role in disease diagnosis. The noise that appears in MRI images is commonly governed by a Rician distribution. The bendlets system is a second-order shearlet transform with bent elements.
Shuli Mei   +5 more
doaj   +2 more sources

Noise reduction by adaptive-SIN filtering for retinal OCT images [PDF]

open access: yesScientific Reports, 2021
Optical coherence tomography (OCT) images is widely used in ophthalmic examination, but their qualities are often affected by noises. Shearlet transform has shown its effectiveness in removing image noises because of its edge-preserving property and ...
Yan Hu   +4 more
doaj   +2 more sources

Determining Area Affected by Corona in Lung Computed Tomography Images by Three-phase Level Set and Shearlet Transform [PDF]

open access: yesJournal of Medical Signals and Sensors
Background: The COVID-19 pandemic has created a critical global situation, causing widespread challenges and numerous fatalities due to severe respiratory complications. Since lung involvement is a key factor in COVID-19 diagnosis and treatment, accurate
Nasser Aghazadeh   +2 more
doaj   +2 more sources

A Comparative Study of Shearlet, Wavelet, Laplacian Pyramid, Curvelet, and Contourlet Transform to Defect Detection [PDF]

open access: yesJournal of Soft Computing in Civil Engineering, 2023
This study presents a new approach based on shearlet transform for the first time to detect damages, and compare it with the wavelet, Laplacian pyramid, curvelet, and contourlet transforms to specify different types of defects in plate structures ...
Sepideh Vafaie, Eysa Salajegheh
doaj   +1 more source

Adaptive filter method in Bendlet domain for biological slice images

open access: yesMathematical Biosciences and Engineering, 2023
The biological cross-sectional images majorly consist of closed-loop structures, which are suitable to be represented by the second-order shearlet system with curvature (Bendlet).
Yafei Liu   +3 more
doaj   +1 more source

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