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Mostrando publicaciones 1-7 de 7

  • 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 ...

  • Efficient exploitation of the Xeon Phi architecture for the Ant Colony Optimization (ACO) metaheuristic 

    Tirado-Marabolí, Felipe; Barrientos, Ricardo ORCID; Mora, Marco ORCID; González-Gutiérrez, Paulo (2017)
    In recent years, the use of compute-intensive coprocessors has been widely studied in the field of Parallel Computing to accelerate sequential processes through a Graphic Processing Unit (GPU). Intel has recently released ...

  • Ethical value of transparency on professional formation 

    González-Gutiérrez, Paulo; Correa-Schnake, Marcelo G.; LAZZARO-SALAZAR, MARIANA; Toranzo, Marco ORCID; Alcaino-Jaque, Barbara E. (2018)
    In this article, transparency is presented as an ethical value that can be used during the training process of engineers. The article begins by describing the concepts related to the ethical values involved in this process, ...

  • 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 ...

  • Teach data structures by using logical-mathematical object oriented formalism and several programing languages 

    González-Gutiérrez, Paulo (2019)
    In this work, a method to teach data structures based on a novel logical-mathematical object oriented framework and several programming languages to develop the solutions is presented. The logical-mathematic formalism helps ...