Subcomunitats

Enviaments recents

  • Edge versus contrast estimation of morphological filters 

    Salembier Clairon, Philippe Jean (. ICASSP, 1993)
    Text en actes de congrés
    Accés obert
    The estimation properties of morphological filters are considered in terms of edge localization and grey level contrast preservation in two-dimensional spaces. It is shown that, at least in practice, a compromise between ...
  • Unsupervised segmentation controlled by morphological contrast ext 

    Marqués Acosta, Fernando; Gasull Llampallas, Antoni (. ICASSP, 1993)
    Text en actes de congrés
    Accés obert
    A novel approach for unsupervised image segmentation is described. This approach makes use of a Gaussian pyramid as multiresolution decomposition to analyze images. Compound random fields are used to model images at each ...
  • Estimation of the modulation index of cpm signals using hos 

    Rodríguez Fonollosa, Javier; Rodríguez Fonollosa, José Adrián (Institute of Electrical and Electronics Engineers (IEEE), 1993)
    Text en actes de congrés
    Accés obert
    Three simple methods are proposed for the estimation of the modulation index of continuous phase modulated signals in noise. These methods employ the estimated autocorrelation and fourth-order cumulant sequences of the ...
  • Improvements on stochastic vector quantization of images 

    Torres Urgell, Lluís (. ICASSP, 1993)
    Text en actes de congrés
    Accés obert
    A novel nonadaptive fixed-rate vector quantizer encoding scheme is presented, and preliminary results are shown. The design of the codebook has been based on a stochastic approach in order to match a previously defined ...
  • Use of multi-layered PCM gypsums to improve fire response. Physical, thermal and mechanical characterization 

    Serrano, Susana; Barreneche, Camila; Navarro Ezquerra, Antonia; Haurie Ibarra, Laia; Fernández Renna, Ana Inés; Cabeza Fabra, Luisa F. (2016-09-01)
    Article
    Accés obert
    The building sector is one of the highest energy consumers representing around 30% of total energy use. One of the recommendations of the IEA (International Energy Agency) to reduce energy consumption in buildings is to ...
  • Precoding in multibeam satellite communications: present and future challenges 

    Vázquez, Miguel Ángel; Pérez Neira, Ana Isabel; Christopoulos, Dimitrios (2016-12-01)
    Article
    Accés obert
    Whenever multibeam satellite systems target very aggressive frequency reuse in their coverage area, inter-beam interference becomes the major obstacle for increasing the overall system throughput. As a matter of fact, users ...
  • Influence of pre-existing martensite on the wear resistance of metastable austenitic stainless steels 

    Fargas Ribas, Gemma; Roa Rovira, Joan Josep; Mateo García, Antonio Manuel (2016)
    Article
    Accés obert
    The effect of pre-existing martensite on the sliding wear behavior of a commercial metastable austenitic stainless steel was investigated. Two different steel conditions were considered: annealed (with a fully austenitic ...
  • Microstructural influence on tolerance to corrosion-induced damage in hardmetals 

    Tarrago, J.M.; Fargas Ribas, Gemma; Isern, Lluis; Dorvlo, Selassie; Tarrés, E.; Muller, Carlos; Jiménez Piqué, Emilio; Llanes Pitarch, Luis Miguel (2016)
    Article
    Accés restringit per política de l'editorial
    The influence of the microstructure on the tolerance of WC-Co cemented carbides to corrosion damage was studied by using residual strength as the critical design parameter. In doing so, samples were immersed in synthetic ...
  • A performance analysis of a mimetic finite difference scheme for acoustic wave propagation on GPU platforms 

    Otero Calviño, Beatriz; Frances, Jorge; Rodriguez Cruz, Robert; Rojas, Otilio; Solano, Freysimar; Guevara-Jordan, Juan (2017-02-01)
    Article
    Accés restringit per política de l'editorial
    Realistic applications of numerical modeling of acoustic wave dynamics usually demand high-performance computing because of the large size of study domains and demanding accuracy requirements on simulation results. Forward ...
  • Influence of building orientation on the flexural strength of laminated object manufacturing specimens 

    Olivier, Djamila; Travieso Rodriguez, Jose Antonio; Borrós Gómez, Salvador; Reyes Pozo, Guillermo; Jerez Mesa, Ramón (Springer, 2017)
    Article
    Accés obert
    This study aims to define the best building orientation for components produced via the Laminated object manufacturing (LOM) technique to enhance their flexural performance. Results of previous research show that components ...

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