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Mostrando ítems 11-20 de 26
Clustering multivariate climate data streams using fractal dimension
(Laboratório Nacional de Computação Científica - LNCCCentro Federal de Educação Tecnológica Celso Suckow da Fonseca - Cefet/RJPetrópolis, 2015-10)
A data stream is a flow of data produced continuously along the time. Storing and analyzing such information become challenging due to exponential growth of the data volume collected. In this context, some methods were ...
Maximum entropy, fractal dimension and lacunarity in quantification of cellular rejection in myocardial biopsy of patients submitted to heart transplantation
(Iop Publishing Ltd, 2011-01-01)
This paper presents a method for the quantification of cellular rejection in endomyocardial biopsies of patients submitted to heart transplant. The model is based on automatic multilevel thresholding, which employs histogram ...
The use of metamaterial technology to improve a GTEM chamber
(Rio de Janeiro, 2014-03-24)
In this work, metamaterial patterns are applied to a
GTEM – Gigahertz Transverse Electromagnetic Chamber to
improve and give flexibility to its frequency response. The main
goal is to achieve a better frequency resonance ...
Automatic method to classify images based on multiscale fractal descriptors and paraconsistent logic
(Iop Publishing Ltd, 2015-01-01)
In this study is presented an automatic method to classify images from fractal descriptors as decision rules, such as multiscale fractal dimension and lacunarity. The proposed methodology was divided in three steps: ...
On the association of young star: clusters and their parental clouds: a statistical fractal analysis
(International Astronomical UnionFlorianópolis, 2013)
We present a study of 21 young star clusters aiming to characterize their association to dense cllouds. The structure of the clouds was evaluated by means of the Q statistical fractal analysis, designed to compare their ...
On the efficacy of texture analysis for crowd monitoring
(Institute of Electrical and Electronics Engineers (IEEE), Computer Soc, 1998-01-01)
The goal of this work is to assess the efficacy of texture measures for estimating levels of crowd densities ill images. This estimation is crucial for the problem of crowd monitoring. and control. The assessment is carried ...
Shape analysis using multiscale hough transform statistics
(2015-01-01)
With the widespread proliferation of computers, many human activities entail the use of automatic image analysis. The basic features used for image analysis include color, texture, and shape. In this paper, we propose MHTS ...