Results 51 to 60 of about 169 (141)
Bendlet Transform Based Adaptive Denoising Method for Microsection Images. [PDF]
Entropy (Basel), 2022 Mei S +5 more
europepmc +1 more source
Noise reduction by adaptive-SIN filtering for retinal OCT images. [PDF]
Sci Rep, 2021 Hu Y, Ren J, Yang J, Bai R, Liu J.
europepmc +1 more source
Automated Diagnosis and Assessment of Cardiac Structural Alteration in Hypertension Ultrasound Images. [PDF]
Contrast Media Mol Imaging, 2022 Raghavendra U +11 more
europepmc +1 more source
Scale Invariant Interest Points with Shearlets
CoRR, 2016 Shearlets are a relatively new directional multi-scale framework for signal analysis, which have been shown effective to enhance signal discontinuities such as edges and corners at multiple scales. In this work we address the problem of detecting and describing blob-like features in the shearlets framework.
Miguel A. Duval-Poo +3 more
openaire +2 more sources
Shearlets and Microlocal Analysis [PDF]
, 2012 Although wavelets are optimal for describing pointwise smoothness properties of univariate functions, they fail to efficiently characterize the subtle geometric phenomena of multidimensional singularities in high-dimensional functions. Mathematically these phenomena can be captured by the notion of the wavefront set which describes point- and direction-
openaire +2 more sources
Noise Suppression and Edge Preservation for Low-Dose COVID-19 CT Images Using NLM and Method Noise Thresholding in Shearlet Domain. [PDF]
Diagnostics (Basel), 2022 Diwakar M +7 more
europepmc +1 more source
On Quaternion Shearlet Transforms
, 2018 In this paper, we introduce the notion of quaternion shearlet transform- which is an extension of the ordinary shearlet transform. Firstly, we study the fundamental properties of quaternion shearlet transforms and then establish some basic results including Moyal's and inversion formulae.
Shah, Firdous A., Tantary, Azhar Y.
openaire +2 more sources
Deep Prior Approach for Room Impulse Response Reconstruction. [PDF]
Sensors (Basel), 2022 Pezzoli M +5 more
europepmc +1 more source
Analyse von Shearlet-Coorbit-Räumen
, 2018 Coorbit theory provides a framework for the study of approximation theoretic properties of certain elementary building blocks and to analyze properties of functions by considering the decay behavior of their associated wavelet transform. This transform is based on a representation of a group and properties of the group are decisive for the structure of
openaire +2 more sources
Bankline detection of GF-3 SAR images based on shearlet. [PDF]
PeerJ Comput Sci, 2021 Sun Z +4 more
europepmc +1 more source