Ara es mostren els items 46-65 de 100

    • Improving retrieval accuracy of Hierarchical Cellular Trees for generic metric spaces 

      Ventura Royo, Carles; Vilaplana Besler, Verónica; Giró Nieto, Xavier; Marqués Acosta, Fernando (2013-09)
      Article
      Accés restringit per política de l'editorial
      Abstract Metric Access Methods (MAMs) are indexing techniques which al- low working in generic metric spaces. Therefore, MAMs are specially useful for Content-Based Image Retrieval systems based on features which use ...
    • Interpolation and extrapolation of image partitions using Fourier descriptors: application to segmentation-based coding schemes 

      Marqués Acosta, Fernando; Llorens, Bernat; Gasull Llampallas, Antoni (. S.N., 1995)
      Text en actes de congrés
      Accés obert
      This paper presents an interpolation/extrapolation technique for sequence partitions. It consists of four steps: region parametrization, region interpolation, region ordering and partition creation. The evolution of each ...
    • Matehematic morphology approach for renal biopsy analysis 

      Marqués Acosta, Fernando; Cuberas, Gemma; Gasull Llampallas, Antoni; Seron, Daniel; Moreso, Francesc; Joshi, Nayana (Institute of Electrical and Electronics Engineers (IEEE), 2004)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper proposes a new technique for the analysis of renal biopsies stained with Sirius red and digitized under non-polarized light. The renal interstitial space, the cortex area and the tubules should be segmented to ...
    • Materials transversals per a l'aprenentatge actiu de les matèries de processat d'imatge i vídeo 

      Morros Rubió, Josep Ramon; Vilaplana Besler, Verónica; Ruiz Hidalgo, Javier; Casas Pla, Josep Ramon; Gasull Llampallas, Antoni; Marqués Acosta, Fernando; Pardàs Feliu, Montse; Salembier Clairon, Philippe Jean (2014)
      Text en actes de congrés
      Accés obert
      Aquest treball vol promoure la col·laboració i coordinació entre assignatures de processat d'imatge/vídeo amb l’objectiu de potenciar els resultats en l'aprenentatge. Les principals contribucions son a) la creació d’un ...
    • Measures and meta-measures for the supervised evaluation of image segmentation 

      Pont Tuset, Jordi; Marqués Acosta, Fernando (IEEE Computer Society Publications, 2013)
      Text en actes de congrés
      Accés obert
      This paper tackles the supervised evaluation of image segmentation algorithms. First, it surveys and structures the measures used to compare the segmentation results with a ground truth database, and proposes a new measure: ...
    • La Millor Metodologia Docent 

      Marqués Acosta, Fernando (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2013-06)
      Altres
      Accés obert
      En aquesta xerrada defensaré la que jo considero que és la millor metodologia docent i com es pot aplicar. Intentaré argumentar els diferents punts amb exemples personals o propers per tal de poder donar referències clares ...
    • Morphological detection based on size and contrast criteria. Application to cells detection 

      Salembier Clairon, Philippe Jean; Gasull Llampallas, Antoni; Marqués Acosta, Fernando; Sayrol Clols, Elisa (. IEEE, 1992)
      Text en actes de congrés
      Accés obert
      This paper deals with a detection algorithm relying on size and contrast criteria. It is suitable for a large range of applications where a priori information about the size and the contrast of the objects to detect is ...
    • MPEG-4 : una nueva representación de la información audio-visual 

      Casas Pla, Josep Ramon; Marqués Acosta, Fernando; Salembier Clairon, Philippe Jean (Escola Tècnica Superior d'Enginyers de Telecomunicació de Barcelona, 1996)
      Article
      Accés obert
    • Multiresolution co-clustering for uncalibrated multiview segmentation 

      Ventura, Carles; Varas, David; Vilaplana Besler, Verónica; Giró Nieto, Xavier; Marqués Acosta, Fernando (2019-05-04)
      Article
      Accés obert
      We propose a technique for coherently co-clustering uncalibrated views of a scene with a contour-based representation. Our work extends the previous framework, an iterative algorithm for segmenting sequences with small ...
    • Multiresolution hierarchy co-clustering for semantic segmentation in sequences with small variations 

      Varas González, David; Alfaro Vendrell, Mónica; Marqués Acosta, Fernando (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper presents a co-clustering technique that, given a collection of images and their hierarchies, clusters nodes from these hierarchies to obtain a coherent multiresolution representation of the image collection. We ...
    • Multiresolution image segmentation based on camporend random fields: Application to image coding 

      Marqués Acosta, Fernando (Universitat Politècnica de Catalunya, 1992-11-22)
      Tesi
      Accés obert
      La segmentación de imágenes es una técnica que tiene como finalidad dividir una imagen en un conjunto de regiones, asignando a cada objeto en la escena una o varias regiones. Para obtener una segmentación correcta, cada ...
    • Multiscale combinatorial grouping 

      Arbelaez, Pablo Andres; Pont Tuset, Jordi; Barron, Jonathan; Marqués Acosta, Fernando; Malik, Jitendra (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés obert
      We propose a unified approach for bottom-up hierarchical image segmentation and object candidate generation for recognition, called Multiscale Combinatorial Grouping (MCG). For this purpose, we first develop a fast normalized ...
    • Multiscale combinatorial grouping for image segmentation and object proposal generation 

      Pont Tuset, Jordi; Arbelaez, Pablo Andrés; Barron, Jonathan; Marqués Acosta, Fernando; Malik, Jitendra (2017-01-01)
      Article
      Accés obert
      We propose a unified approach for bottom-up hierarchical image segmentation and object proposal generation for recognition, called Multiscale Combinatorial Grouping (MCG). For this purpose, we first develop a fast normalized ...
    • Multiview depth coding based on combined color/depth segmentation 

      Ruiz Hidalgo, Javier; Morros Rubió, Josep Ramon; Aflaki, Payman; Calderero Patino, Felipe; Marqués Acosta, Fernando (2012-01)
      Article
      Accés restringit per política de l'editorial
      In this paper, a new coding method for multiview depth video is presented. Considering the smooth structure and sharp edges of depth maps, a segmentation based approach is proposed. This allows further preserving the depth ...
    • Object detection and segmentation on a hierarchical region-based image representation 

      Vilaplana Besler, Verónica; Marqués Acosta, Fernando; León Cristóbal, Míriam; Gasull Llampallas, Antoni (2010)
      Comunicació de congrés
      Accés obert
      In this paper we present a general framework for object detection and segmentation. Using a bottom-up unsupervised merging algorithm, a region-based hierarchy that represents the image at different resolution levels is ...
    • Object retrieval with deep convolutional features 

      Mohedano, Eva; Salvador Aguilera, Amaia; McGuinness, Kevin; Giró Nieto, Xavier; O'Connor, Noel; Marqués Acosta, Fernando (IOS Press, 2017-11-23)
      Capítol de llibre
      Accés restringit per política de l'editorial
      Deep learning and image processing are two areas of great interest to academics and industry professionals alike. The areas of application of these two disciplines range widely, encompassing fields such as medicine, robotics, ...
    • Object-based evaluation of hierarchical region-based representations based on information theory statistical measures 

      Calderero Patino, Felipe; Marqués Acosta, Fernando (IEEE Computer Society Publications, 2008)
      Text en actes de congrés
      Accés obert
      This work presents an evaluation in terms of object representation of the hierarchical region-based representations created by a family of general statistical region merging algorithms. These merging techniques are based ...
    • Obtencion de un esqueleto morfologico sin puntos redundantes 

      Marqués Acosta, Fernando; Gasull Llampallas, Antoni; Torres Urgell, Lluís (1991)
      Text en actes de congrés
      Accés obert
      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. ...
    • Partition coding using multi-grid chain code and motion compensation 

      Marqués Acosta, Fernando; Gasull Llampallas, Antoni (IEEE, 1996)
      Text en actes de congrés
      Accés obert
      In this paper, a lossy partition coding technique is presented which leads to decoded partitions with unnoticeable losses. It uses a hexagonal grid for contour representation and it is based on the concept of multi-grid ...
    • Partition tree for a segmentation-based video coding system 

      Pardàs Feliu, Montse; Salembier Clairon, Philippe Jean; Marqués Acosta, Fernando; Morros, R (Institute of Electrical and Electronics Engineers (IEEE), 1996)
      Text en actes de congrés
      Accés obert
      In this paper we describe a very low bit rate video coding system that belongs to the class of object based coding systems. The system takes advantage of homogeneity in both gray level and motion, trying to use the most ...