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Mostrando publicaciones 11-20 de 25
Off-line writer verification based on simple graphemes
(2018)
A method to writer verification based on handwritten stroke analysis is presented. The proposed descriptors correspond to an estimation of the pressure applied when writing using the grayscale image of the stroke. These ...
Canopy architecture assessment of cherry trees by cover photography based on variable light extinction coefficient modelled using artificial neural networks
(2019)
Leaf area index (LAI) is one of the most important parameters in physiological and functional plant models to estimate tree canopy vigor and photosynthesis. However, LAI requires either destructive or indirect methods for ...
Dynamic PET image denoising
(2018)
Dynamic Positron Emission Tomography (dPET) images are inherently affected by noise and low spatial resolution. The problems aforementioned may lead to incorrect estimation of the uptake of the tracer in tissues. In this ...
A multi-directional gradient with bi-geometric calculus to detect contours in images with multiplicative noise
(2018)
In this paper a new operator is presented for the detection of contours in images with multiplicative noise, by using the operations introduced in the bi-geometric calculus, since recent results in the literature show that ...
Contour detection in images with speckle by using the bi-geometric structure
(2019)
The speckle produces severe degradations in digital images, which could be introduced by technological devices during the acquisition, capture or transmission of the images. This perturbation affects, for instance, medical ...
Heuristic parametrization of anisotropic diffusion filtering
(2019)
The methods of evolutionary computation allow to set optimal values in a space of solutions from a candidate set. In this work, we have used evolutionary methods, for optimal parameters setting of the anisotropic diffusion ...
Neural networks ensemble for automatic DNA microarray spot classification
(2019)
In this work, a new step for the DNA microarray image analysis pipeline is proposed using neural computing techniques. We perform the classification of the spots into morphology-derived classes in order to assist the ...
Performance analysis of clustering internal validation indexes with asymmetric clusters
(2019)
The present work evaluates the performance of a set of internal clustering indexes in artificial and real data sets regarding a specific structural characteristic. In particular, it deals with data sets whose clusters ...
Extreme learning machines to combat phase noise in RoF-OFDM schemes
(2019)
Radio-over-fiber (RoF) orthogonal frequency division multiplexing (OFDM) systems have been revealed as the solution to support secure, cost-effective, and high-capacity wireless access for the future telecommunication ...
Multiplicative local binary patterns (MuLBP)
(2019)
Speckle is a multiplicative noise that greatly deteriorates images. In this paper a model of Local Binary Patterns (LBP) adapted to images with speckle (MuLBP) is proposed. The multiplicative model is constructed by ...