Recent Submissions

  • Antipodally invariant metrics for fast regression-based super-resolution 

    Pérez-Pellitero, Eduardo; Salvador, Jordi; Ruiz Hidalgo, Javier; Rosenhahn, Bodo (2016-03-31)
    Article
    Open Access
    Dictionary-based super-resolution (SR) algorithms usually select dictionary atoms based on the distance or similarity metrics. Although the optimal selection of the nearest neighbors is of central importance for such ...
  • A contour-based approach to binary shape coding using a multiple grid chain code 

    Nunes, P; Marqués Acosta, Fernando; Pereira, F; Gasull Llampallas, Antoni (2000-05)
    Article
    Open Access
    This paper presents a contour-based approach to efficiently code binary shape information in the context of object-based video coding. This approach meets some of the most important requirements identified for the MPEG-4 ...
  • Region-based representations of image and video: segmentation tools for multimedia services 

    Salembier Clairon, Philippe Jean; Marqués Acosta, Fernando (1999-12)
    Article
    Open Access
    This paper discusses region-based representations of image and video that are useful for multimedia services such as those supported by the MPEG-4 and MPEG-7 standards. Classical tools related to the generation of the ...
  • Prediction of image partitions using Fourier descriptors: application to segmentation-based coding schemes 

    Marqués Truyol, Francisco; Gasull Llampallas, Antoni (1998-04)
    Article
    Open Access
    This paper presents a prediction technique for partition sequences. It uses a region-by-region approach that consists of four steps: region parameterization, region prediction, region ordering, and partition creation. The ...
  • Segmentation of video sequences and rate control 

    Marcotegui Iturmendi, Beatriz; Marqués Acosta, Fernando; Morros Rubió, Josep Ramon; Pardàs Feliu, Montse; Salembier Clairon, Philippe Jean (1997-08)
    Article
    Open Access
    This paper deals with the relation between segmentation for coding and rate control. The efficiency of a segmentation-based coding scheme heavily relies on this step that defines how many and which regions have to be ...
  • Segmentation-based video coding system allowing the manipulation of objects 

    Salembier Clairon, Philippe Jean; Marqués Acosta, Fernando; Pardàs Feliu, Montse; Morros Rubió, Josep Ramon; Corset, I; Jeannin, S; Bouchard, L; Meyer, F; Marcotegui Iturmendi, Beatriz (1997-02)
    Article
    Open Access
    This paper presents a generic video coding algorithm allowing the content-based manipulation of objects. This manipulation is possible thanks to the definition of a spatiotemporal segmentation of the sequences. The coding ...
  • Allowing content-based functionalities in segmentation-based coding schemes 

    Marcotegui Iturmendi, Beatriz; Marqués Acosta, Fernando; Meyer, F (1997-08)
    Article
    Open Access
    This paper deals with the use of the segmentation tools and principles presented in [10] and [13] for allowing content-based functionalities. In this framework, means for supervised selection of objects in the scene are ...
  • Saliency maps on image hierarchies 

    Vilaplana Besler, Verónica (2015-01-01)
    Article
    Restricted access - publisher's policy
    © 2015 Elsevier B.V. All rights reserved. In this paper we propose two saliency models for salient object segmentation based on a hierarchical image segmentation, a tree-like structure that represents regions at different ...
  • Monocular depth ordering using T-Junctions and convexity occlusion cues 

    Palou Visa, Guillem; Salembier Clairon, Philippe Jean (2013)
    Article
    Restricted access - publisher's policy
    This paper proposes a system that relates objects in an image using occlusion cues and arranges them according to depth. The system does not rely on a priori knowledge of the scene structure and focuses on detecting ...
  • An improved maximum likelihood method for power spectral density estimation 

    Lagunas Hernandez, Miguel A.; Gasull Llampallas, Antoni (1984-02)
    Article
    Open Access

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