An accelerated nonlocal means algorithm for synthetic aperture radar ocean image despeckling
Sign Up to like & getrecommendations! Published in 2019 at "Acta Oceanologica Sinica"
DOI: 10.1007/s13131-019-1504-5
Abstract: Synthetic aperture radar (SAR) images play an increasingly important role in ocean environmental monitoring and research. However, SAR images are inherently corrupted by speckle noise. SAR ocean images have some unique characteristics. The signatures of… read more here.
Keywords: ocean image; image; aperture radar; nonlocal means ... See more keywords
Dynamic PET image reconstruction incorporating a median nonlocal means kernel method
Sign Up to like & getrecommendations! Published in 2021 at "Computers in Biology and Medicine"
DOI: 10.1016/j.compbiomed.2021.104713
Abstract: Abstract In dynamic positron emission tomography (PET) imaging, the reconstructed image of a single frame often exhibits high noise due to limited counting statistics of projection data. This study proposed a median nonlocal means (MNLM)-based… read more here.
Keywords: median nonlocal; pet image; method; kernel method ... See more keywords
Seismic random noise attenuation using nonlocal-means via smooth patch ordering
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Applied Geophysics"
DOI: 10.1016/j.jappgeo.2019.05.005
Abstract: Abstract In seismic exploration, suppressing random noise is a key step in improving the signal-to-noise ratio (SNR) of seismic data. The effective structures of seismic profiles can be characterized by the abundance of self-repeating patterns.… read more here.
Keywords: random noise; patch ordering; nonlocal means; smooth patch ... See more keywords
Multifrequency Polarimetric SAR Image Despeckling by Iterative Nonlocal Means Based on a Space-Frequency Information Joint Covariance Matrix
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing"
DOI: 10.1109/jstars.2018.2884194
Abstract: This paper presents an iterative nonlocal means (NLM) filtering method under the Bayesian framework to deal with the issue of multifrequency fully polarimetric synthetic aperture radar (PolSAR) image despeckling. Differing from most of the PolSAR… read more here.
Keywords: iterative nonlocal; nonlocal means; frequency; image ... See more keywords
Speckle denoising by variant nonlocal means methods.
Sign Up to like & getrecommendations! Published in 2019 at "Applied optics"
DOI: 10.1364/ao.58.007110
Abstract: This study aims to demonstrate the performances of nonlocal means (NLM) and their variant denoising methods, mainly focusing on NLM-shaped adaptive patches and several NLM-reprojection schemes for speckle noise reduction in amplitude and phase images… read more here.
Keywords: denoising methods; speckle denoising; nonlocal means; imaging systems ... See more keywords
Guided filtering-based nonlocal means despeckling of optical coherence tomography images.
Sign Up to like & getrecommendations! Published in 2020 at "Optics letters"
DOI: 10.1364/ol.400926
Abstract: This Letter presents a guided filtering (GF)-based nonlocal means (NLM) method for despeckling of optical coherence tomography (OCT) images. Unlike existing NLM methods that determine weights using image intensities or features, the proposed method first… read more here.
Keywords: filtering based; optical coherence; based nonlocal; despeckling optical ... See more keywords