Results 21 to 30 of about 3,553,938 (121)

Texture analysis by multi-resolution fractal descriptors

open access: yes, 2014
This work proposes a texture descriptor based on fractal theory. The method is based on the Bouligand-Minkowski descriptors. We decompose the original image recursively into 4 equal parts. In each recursion step, we estimate the average and the deviation
Bruno, Odemir M., Florindo, João B.
core   +1 more source

Texture analysis using complex system models: fractal dimension, swarm systems and non-linear diffusion

open access: yes, 2016
Texture is one of the primary visual features used to computationally describe the patterns found in nature. Existing computational methods, however, do not successfully discriminate the complexity of texture patterns.
Bruno Brandoli Machado   +1 more
semanticscholar   +1 more source

Multiscale Fractal Descriptors Applied to Nanoscale Images

open access: yes, 2012
This work proposes the application of fractal descriptors to the analysis of nanoscale materials under different experimental conditions. We obtain descriptors for images from the sample applying a multiscale transform to the calculation of fractal ...
Bruno, Odemir M.   +3 more
core   +1 more source

Invariance of the normalized Minkowski content with respect to the ambient space

open access: yes, 2012
It is easy to show that the lower and the upper box dimensions of a bounded set in Euclidean space are invariant with respect to the ambient space. In this article we show that the Minkowski content of a Minkowski measurable set is also invariant with ...
Boros   +18 more
core   +1 more source

Minkowski Functionals of Abell/ACO Clusters [PDF]

open access: yes, 1996
We determine the Minkowski functionals for a sample of Abell/ACO clusters, 401 with measured and 16 with estimated redshifts. The four Minkowski functionals (including the void probability function and the mean genus) deliver a global description of the ...
Borgani, S.   +8 more
core   +3 more sources

Fractal boundary basins in spherically symmetric $\phi^4$ theory

open access: yes, 2011
Results are presented from numerical simulations of the flat-space nonlinear Klein-Gordon equa- tion with an asymmetric double-well potential in spherical symmetry.
C. Gundlach   +2 more
core   +1 more source

On a class of nonlinear variational inequalities: High concentration of the graph of weak solution via its fractional dimension and Minkowski content

open access: yesElectronic Journal of Differential Equations, 2007
Weak continuous bounded solutions of a class of nonlinear variational inequalities associated to one-dimensional p-Laplacian are studied. It is shown that a kind of boundary behaviour of nonlinearity in the main problem produces a kind of high boundary ...
Mervan Pasic, Luka Korkut
doaj  

The Power of Poincar\'e: Elucidating the Hidden Symmetries in Focal Conic Domains

open access: yes, 2010
Focal conic domains are typically the "smoking gun" by which smectic liquid crystalline phases are identified. The geometry of the equally-spaced smectic layers is highly generic but, at the same time, difficult to work with. In this Letter we develop an
Alexander, Gareth P.   +3 more
core   +1 more source

On the Calculation of Solid-Fluid Contact Angles from Molecular Dynamics [PDF]

open access: yes, 2013
A methodology for the determination of the solid-fluid contact angle, to be employed within molecular dynamics (MD) simulations, is developed and systematically applied.
Carmelo Herdes   +7 more
core   +3 more sources

Characterizing neuromorphologic alterations with additive shape functionals

open access: yes, 2004
The complexity of a neuronal cell shape is known to be related to its function. Specifically, among other indicators, a decreased complexity in the dendritic trees of cortical pyramidal neurons has been associated with mental retardation.
Barbosa, M. S.   +4 more
core   +1 more source

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