Enviaments recents

  • Spatio-temporal road detection from aerial imagery using CNNs 

    Luque, Belen; Morros Rubió, Josep Ramon; Ruiz Hidalgo, Javier (SCITEPRESS, 2017)
    Text en actes de congrés
    Accés obert
    The main goal of this paper is to detect roads from aerial imagery recorded by drones. To achieve this, we propose a modification of SegNet, a deep fully convolutional neural network for image segmentation. In order to ...
  • Morphological interpolation for texture coding 

    Casas Pla, Josep Ramon; Salembier Clairon, Philippe Jean; Torres Urgell, Lluís (. S.N., 1995)
    Text en actes de congrés
    Accés obert
    In this paper a new morphological interpolation technique is presented. It is applied to the coding of the smooth (primary) component in a sketch-based image compression approach for very low bit-rates. The interpolation ...
  • Optical bistability in a fiber ring cavity with synchronous pulsed pump: anomalous and normal dispersion 

    García Mateos, Jorge (- IEEE, 1994)
    Text en actes de congrés
    Accés obert
    Passive fiber cavities are basic nonlinear optical systems that are described by simple models - however they have a rich spectrum of complex behaviors (optical bistability, period-doubling bifurcations, chaos, modulational ...
  • A new positive time-frequency distribution 

    Rodríguez Fonollosa, Javier; Nikias, C L (1994)
    Text en actes de congrés
    Accés obert
    This article studies the formulation of new members of the Cohen-Posch (1985) class of positive time-frequency energy distributions. Members of this class are always positive functionals and satisfy the marginal constraints. ...
  • Motion region overlapping for segmentation-based video coding 

    Pardàs Feliu, Montse; Salembier Clairon, Philippe Jean; Gonzalez, Benito (. S.N., 1994)
    Text en actes de congrés
    Accés obert
    In object-based video coding systems, the scenes are described in terms of three dimensional objects, which can be coded as textures and contours. However, in order to achieve high compression ratios, the redundancy in the ...
  • Application of hyperstability theory to interference cancelling 

    Bertran Albertí, Eduardo; Montoro López, Gabriel (O.YUKSEL IEEE, 1994)
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    Accés obert
    An alternative to the usual adaptive noise cancelling method devoted to removing interference is presented. In the conventional methodology to implement adaptive cancellers a reference signal is necessary correlated with ...
  • Continuous-time adaptive control applied to rf amplifier linearization 

    Bertran Albertí, Eduardo; Montoro López, Gabriel; Talavera Pedrol, Núria (O.YUKSEL IEEE, 1994)
    Text en actes de congrés
    Accés obert
    A new approach to the RF power amplifier linearization problem is presented. The proposed solution applies non-linear theories (Lyapunov direct method) to adaptive filtering in order to improve the linearity of the RF ...
  • A study of flexible bandwidth allocation in statistical OFDM-based PON 

    Cano Valadéz, Iván Nicolás; Escayola Elias, Francisco Javier; Peralta Gallardo, Ángel; Polo Querol, Víctor; Santos Blanco, M. Concepción; Prat Gomà, Josep Joan (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    The upstream of an OFDM-PON with direct modulated lasers tuned in temperature was experimentally tested. Results demonstrate flexible bandwidth allocation, and show it constitutes an efficient strategy to cope with the ...
  • Global concurrent optimization: advantages and opportunities in flexgrid-based networks 

    Castro Casales, Alberto; Velasco Esteban, Luis Domingo; Comellas Colomé, Jaume; Junyent Giralt, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    In future flexgrid core networks the amount of lightpaths might increase significantly as a consequence of the finer granularity in the use of the optical spectrum. Different spectrum bandwidth can be allocated to each ...
  • An elastic networks OMNeT++-based simulator 

    Asensio Garcia, Adrian; Castro Casales, Alberto; Velasco Esteban, Luis Domingo; Comellas Colomé, Jaume (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    An increasing number of studies about flexgrid-based elastic optical networks are currently being carried out by industry as well as academic research teams. As access to real test-beds is limited, there is a lack of ...

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