Results 91 to 100 of about 640 (174)

Noise Suppression and Edge Preservation for Low-Dose COVID-19 CT Images Using NLM and Method Noise Thresholding in Shearlet Domain. [PDF]

open access: yesDiagnostics (Basel), 2022
Diwakar M   +7 more
europepmc   +1 more source

Irregular shearlet frames

open access: yes, 2009
This thesis discusses the necessary and sufficient conditions for irregular shearlet systems tobe frames for L2(R2). For this purpose, the notions of densities for irregular shearlet systems areintroduced, and they are used as efficient tools for observing the connection between the geometryof discrete sets of space-scale-shear parameters associated ...
Kittipoom, Pisamai   +1 more
openaire   +1 more source

Optimal sparsity allows reliable system-aware restoration of fluorescence microscopy images. [PDF]

open access: yesSci Adv, 2023
Mandracchia B   +8 more
europepmc   +1 more source

GPR data noise attenuation based on the Shearlet transform

open access: yes矿业科学学报, 2017
When using ground penetrating radar(GPR) to detect the underground target distribution, valid signal in receiving data tend to be susceptible to noise and the interference of air-ground waves, which will affect the accuracy of target recognition and ...
Zheng Jing   +4 more
doaj  

Multimodal medical image fusion in NSST domain with structural and spectral features enhancement. [PDF]

open access: yesHeliyon, 2023
Khan SU   +5 more
europepmc   +1 more source

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