Exploració per autor "Karatzas, D"

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    • A generic framework for median graph computation based on a recursive embedding approach 

      Ferrer Sumsi, Miquel; Karatzas, D; Valveny, Ernest; Bardaji Goikoetxea, Itziar; Bunke, Horst (2011)
      Article
      Accés obert
      The median graph has been shown to be a good choice to obtain a representative of a set of graphs. However, its computation is a complex problem. Recently, graph embedding into vector spaces has been proposed to obtain ...

    • Segmentation robust to the vignette effect for machine vision systems 

      Karatzas, D; Rusiñol, Marçal; Antens, Coen; Ferrer Sumsi, Miquel (Institute of Electrical and Electronics Engineers (IEEE), 2008)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The vignette effect (radial fall-off) is commonly encountered in images obtained through certain image acquisition setups and can seriously hinder automatic analysis processes. In this paper we present a fast and efficient ...