Results 41 to 50 of about 256 (167)

Blind Restoration of Motion Blurred Barcode Images using Ridgelet Transform and Radial Basis Function Neural Network

open access: yesELCVIA Electronic Letters on Computer Vision and Image Analysis, 2014
The aim of any image restoration techniques is recovering the original image from a degraded observation. One of the most common degradation phenomena in images is motion blur.
shamik tiwari
doaj   +1 more source

Analysis of the Spatial Distribution of Galaxies by Multiscale Methods

open access: yesEURASIP Journal on Advances in Signal Processing, 2005
Galaxies are arranged in interconnected walls and filaments forming a cosmic web encompassing huge, nearly empty, regions between the structures. Many statistical methods have been proposed in the past in order to describe the galaxy distribution and ...
E. Saar   +5 more
doaj   +1 more source

Morphological analysis of dendrites and spines by hybridization of ridge detection with twin support vector machine [PDF]

open access: yesPeerJ, 2016
Dendritic spines are described as neuronal protrusions. The morphology of dendritic spines and dendrites has a strong relationship to its function, as well as playing an important role in understanding brain function.
Shuihua Wang   +6 more
doaj   +2 more sources

Application of an Improved Ridgelet Process Neural Network for Predicting the Temperature Rise of Rotor Structure Optimization

open access: yesMachines, 2023
To solve the negative-sequence temperature-rise problem of large equipment under asymmetric operating conditions, this paper optimizes the structure of the main components and adopts an improved process neural network to conduct online analysis and ...
Wu Guo, Jian Guo, Fengjuan Miao
doaj   +1 more source

Multiresolution Analysis Using Wavelet, Ridgelet, and Curvelet Transforms for Medical Image Segmentation

open access: yesInternational Journal of Biomedical Imaging, 2011
The experimental study presented in this paper is aimed at the development of an automatic image segmentation system for classifying region of interest (ROI) in medical images which are obtained from different medical scanners such as PET, CT, or MRI ...
Shadi AlZubi, Naveed Islam, Maysam Abbod
doaj   +1 more source

Multiscale Transform and Shrinkage Thresholding Techniques for Medical Image Denoising – Performance Evaluation

open access: yesCybernetics and Information Technologies, 2020
Due to sparsity and multiresolution properties, Mutiscale transforms are gaining popularity in the field of medical image denoising. This paper empirically evaluates different Mutiscale transform approaches such as Wavelet, Bandelet, Ridgelet, Contourlet,
Nisha S. Shajun, Raja S. P.
doaj   +1 more source

Scale-discretised ridgelet transform on the sphere [PDF]

open access: yes2019 27th European Signal Processing Conference (EUSIPCO), 2019
5 pages, 4 figures, matches version accepted by EUSIPCO, code available at http://www.s2let ...
Jason D. McEwen, Matthew A. Price
openaire   +2 more sources

Ridge Functions and Orthonormal Ridgelets

open access: yesJournal of Approximation Theory, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +3 more sources

A Comprehensive Survey on Concrete Crack Detection

open access: yesShock and Vibration, Volume 2026, Issue 1, 2026.
Concrete structures form the backbone of modern civil infrastructures, yet they are inherently susceptible to cracking over time due to mechanical stress, environmental exposure, and aging. Undetected cracks can escalate into catastrophic structural failures, making timely inspection critical.
Md. Siam Ansary   +1 more
wiley   +1 more source

Almost billfish: convergent longirostry, micro‐dentition, and possible glandular sinuses in a large teleost fish from the Upper Cretaceous of Northern Italy

open access: yesJournal of Anatomy, Volume 247, Issue 6, Page 1109-1130, December 2025.
A fossil rostrum fragment of a large teleost fish from the Upper Cretaceous of Northern Italy reveals remarkable anatomical convergences with Cenozoic and Recent billfishes (marlins, swordfishes, and akin). The extinct group Plethodidae independently acquired a long snout, micro‐teeth, and oil‐gland sinuses well before the evolution of true billfishes.
Giovanni Serafini   +5 more
wiley   +1 more source

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