Results 21 to 30 of about 1,371,255 (284)

Meshless techniques for anisotropic diffusion [PDF]

open access: yesApplied Mathematics and Computation, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
MAZZIA, ANNAMARIA   +2 more
openaire   +2 more sources

GVF-based anisotropic diffusion models [PDF]

open access: yes, 2006
In this paper, the gradient vector flow fields are introduced in image restoration. Within the context of flow fields, the shock filter, mean curvature flow, and Perona-Malik equation are reformulated.
Chua, Chin-seng, Yu, Hongchuan
core   +1 more source

Anisotropic diffusion-limited aggregation [PDF]

open access: yesPhysical Review E, 2004
Using stochastic conformal mappings we study the effects of anisotropic perturbations on diffusion limited aggregation (DLA) in two dimensions. The harmonic measure of the growth probability for DLA can be conformally mapped onto a constant measure on a unit circle.
Popescu, M., Hentschel, H., Family, F.
openaire   +4 more sources

Perceptual Color Image Smoothing via a New Region-Based PDE Scheme

open access: yesELCVIA Electronic Letters on Computer Vision and Image Analysis, 2013
In this paper, we present a new color image regularization method using a rotating smoothing filter. This approach combines a method of pixel classification, which roughly  determines if a pixel belongs to a homogenous region or an edge with an ...
Magnier Baptiste   +2 more
doaj   +1 more source

Local Entropy-Based Coupled Anisotropic Diffusion for Detail-And Edge-Preserving Smoothing

open access: yesDiscrete Dynamics in Nature and Society, 2023
It is important in image restoration to remove noise while preserving sharp edges and fine details such as blurred thin edges and low-contrast fine feature.
De Zhao, Lan Chen
doaj   +1 more source

Anisotropic Diffusion in ITK

open access: yesThe Insight Journal, 2014
Anisotropic Non-Linear Diffusion is a powerful image processing technique, which allows to simultaneously remove the noise and enhance sharp features in two or three dimensional images. Anisotropic Diffusion is understood here in the sense of Weickert, meaning that diffusion tensors are anisotropic and reflect the local orientation of image features ...
Mirebeau, Jean-Marie   +3 more
openaire   +3 more sources

Preserving monotonicity in anisotropic diffusion [PDF]

open access: yesJournal of Computational Physics, 2007
We show that standard algorithms for anisotropic diffusion based on centered differencing (including the recent symmetric algorithm) do not preserve monotonicity. In the context of anisotropic thermal conduction, this can lead to the violation of the entropy constraints of the second law of thermodynamics, causing heat to flow from regions of lower ...
Prateek Sharma, Gregory W. Hammett
openaire   +3 more sources

Smart interpolation by anisotropic diffusion [PDF]

open access: yes12th International Conference on Image Analysis and Processing, 2003.Proceedings., 2004
To enlarge a digital image from a single frame preserving the perceptive cues is a relevant research issue. The best known algorithms take into account the presence of edges in the luminance channel, to interpolate correctly the samples/pixels of the original image.
BATTIATO, SEBASTIANO   +2 more
openaire   +3 more sources

Detection and modeling of non-Gaussian apparent diffusion coefficient profiles in human brain data [PDF]

open access: yes, 2002
This work details the observation of non-Gaussian apparent diffusion coefficient (ADC) profiles in multi-direction, diffusion-weighted MR data acquired with easily achievable imaging parameters (b 1000 s/mm2).
BARKER, G. J.; id_orcid   +5 more
core   +1 more source

Roussos-Maragos Tensor-Driven Diffusion for Image Interpolation

open access: yesImage Processing On Line, 2011
Roussos and Maragos proposed a method for image interpolation in "Reversible interpolation of vectorial images by an anisotropic diffusion-projection PDE." An earlier version was also published in conference paper (Roussos and Maragos, "Vector-Valued ...
Pascal Getreuer
doaj   +1 more source

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