Recent Submissions

  • Three dimensional adaptive Laplacian Pyramid image coding 

    Sallent Ribes, Sebastián; Torres Urgell, Lluís; Gils, L. (Elsevier, 1990)
    Conference report
    Open Access
  • Vector quantization in image sequence coding 

    Huguet, Jordi; Torres Urgell, Lluís (1990)
    Conference report
    Open Access
  • Temporal automatic edge detection of echocardiographic images 

    Torres Urgell, Lluís; Gasull Llampallas, Antoni (1990)
    Conference report
    Open Access
  • Obtencion de un esqueleto morfologico sin puntos redundantes 

    Marqués Acosta, Fernando; Gasull Llampallas, Antoni; Torres Urgell, Lluís (1991)
    Conference report
    Open Access
    Skeleton is a powerful method to describe binary images. Although there are different possibilities to define a skeleton, is very common to use morphological skeleton because it is easy and fast for implementation purposes. ...
  • Análisis de no estacionariedades en la interpolación de imágenes. Aplicación a codificación piramidal y zoom 

    Gasull Llampallas, Antoni; Marqués Acosta, Fernando; Torres Urgell, Lluís (1991)
    Conference report
    Open Access
    In some applications of digital image processing the fact that an image is a non estacionary signal can cause some undesirable effects. That is the case of block effect in transform coding, or destructive effects on contours ...
  • An adaptive pyramid image coding system 

    Torres Urgell, Lluís; Sallent Ribes, Sebastián (Institute of Electrical and Electronics Engineers (IEEE), 1988)
    Conference report
    Open Access
    The Laplacian Pyramid is a new and efficient method for image encoding. The method is of increasing interest as band-pass pyramids and multiresolution images are being used in other image processing applications. The Pyramid ...
  • Diseño de filtros de imagen con funciones de transferencia de dominio romboidal 

    Casas Rius, Joan Ramon; Torres Urgell, Lluís (1991)
    Conference report
    Open Access
    When orthogonal sampllng patterns are applled to digitize analogue images, some degree of spatial redundancy is lntroduced. Quincunx sampllng patterns allow to remove this redundant visual lnformation which consist of ...
  • Detección automática de contornos en imágenes ecocardiográficas 

    Gasull Llampallas, Antoni; Marqués Acosta, Fernando; Sallent Ribes, Sebastián; Torres Urgell, Lluís; Vidal Sans, Josep (Asociación Española de Reconocimiento de Formas y Análisis de Imágenes, 1988)
    Conference report
    Open Access
  • A new adaptive method for image compression using Karhunen-Loeve transform 

    Torres Urgell, Lluís (Institute of Electrical and Electronics Engineers (IEEE), 1987)
    Conference report
    Open Access
    The Karhunen-Loeve transformation (KLT) is an optimal method for encoding images in the MSE sense. Only one spatially adaptive method is known to be reported in the literature. Many other suboptimal encoding methods have ...
  • A non-rectangular pyramid coding system 

    Sallent Ribes, Sebastián; Torres Urgell, Lluís (1988)
    Conference report
    Open Access
    Rectangular sampling lattices bave been extensively applied to image coding. Sampling is a fundamental orera.tion m image coding systems as a proper selection of the sampling lattice minimizes the physica support of the ...

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