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Mostrando publicaciones 1-4 de 4

  • 4DGVF: Segmentation variationnelle pour images 3D multicomposantes 

    Jaouen, Vincent; González-Gutiérrez, Paulo; Stute, Simon; Guilloteau, Denis; Chalon, Sylvie; Buvat, Irene; Tauber, Clovis (2014)
    In this paper, we generalize the gradient vector flow field to vector-valued images. We base our method on the definition of a structure tensor that is calculated according to a blind estimation of contrast in the different ...

  • Dynamic PET image denoising 

    González-Gutiérrez, Paulo; Alcaino-Jaque, Barbara E.; Barrientos, Ricardo ORCID; Mora, Marco ORCID; Tirado-Marabolí, Felipe; Tauber, Clovis (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 ...

  • Heuristic parametrization of anisotropic diffusion filtering 

    González-Gutiérrez, Paulo; Vásquez, Philip; Alcaino-Jaque, Barbara E.; Barrientos, Ricardo ORCID; Mora, Marco ORCID; Tirado-Marabolí, Felipe; Tauber, Clovis (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 ...

  • Simultaneous filtering and sharpening of vector-valued images with numerical schemes 

    González-Gutiérrez, Paulo; García, Thierry; Spiterif, P; Tauber, Clovis (2019)
    The present work deals with the development of a novel approach to increase the quality of 3D vector-valued (4D) images. We model the problem as a coupled anisotropic convection diffusion filtering scheme based upon local ...