Results 51 to 60 of about 53,992 (120)

Extraction of Face Features Using Various Techniques [PDF]

open access: yes, 2014
This thesis aims at devising a novel method of feature extraction of face images which proves to be faster and more accurate than the existing methods defined by wavelet, curvelet and ridgelet transforms.
Biswal, Shruti
core  

Ridgelet-type Frame Decompositions for Sobolev Spaces related to Linear Transport [PDF]

open access: yes, 2018
In this paper we study stability properties of ridgelet and curvelet frames for mixed-smoothness Sobolev spaces with norm $\|f\|_{s} = \|f\|_{L_{2}(\mathbb{R}^{d})} +\|s\cdot\nabla f\|_{L_{2}(\mathbb{R}^{d})}$ .
Grohs, P.
core  

Holography on local fields via Radon Transform

open access: yes, 2018
We define Radon transform and its inverse on the two-dimensional anti-de Sitter space over local fields using a novel construction through a quadratic equation over the local field.
Bhowmick, Samrat, Ray, Koushik
core   +1 more source

Multi-scale analysis of the roughness effect on lubricated rough contact [PDF]

open access: yes, 2014
Determining friction is as equally essential as determining the film thickness in the lubricated contact, and is an important research subject. Indeed, reduction of friction in the automotive industry is important for both the minimization of fuel ...
DEMIRCI, Ibrahim
core   +2 more sources

Deep Convolutional Neural Networks Based on Semi-Discrete Frames

open access: yes, 2015
Deep convolutional neural networks have led to breakthrough results in practical feature extraction applications. The mathematical analysis of these networks was pioneered by Mallat, 2012.
Bölcskei, Helmut, Wiatowski, Thomas
core   +1 more source

(k,q)-Compressed Sensing for dMRI with Joint Spatial-Angular Sparsity Prior

open access: yes, 2017
Advanced diffusion magnetic resonance imaging (dMRI) techniques, like diffusion spectrum imaging (DSI) and high angular resolution diffusion imaging (HARDI), remain underutilized compared to diffusion tensor imaging because the scan times needed to ...
E Candès   +6 more
core   +1 more source

Wavelet-based texture segmentation of titanium based alloy lamellar microstructure: application to images from optical microscope and X-ray microtomography [PDF]

open access: yes, 2009
A texture segmentation algorithm which combines grey level intensity from 2 images after discrete wavelet transform and variance has been applied on 2D images to segment lamellar colonies in (α+β) titanium alloy Ti6A14V.
Babout, Laurent   +4 more
core  

Multivariate $\alpha$-molecules

open access: yes, 2016
The suboptimal performance of wavelets with regard to the approximation of multivariate data gave rise to new representation systems, specifically designed for data with anisotropic features.
Flinth, Axel, Schäfer, Martin
core   +1 more source

Multimodal hybrid convolutional neural network based brain tumor grade classification. [PDF]

open access: yesBMC Bioinformatics, 2023
Rohini A   +7 more
europepmc   +1 more source

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