Exploració per autor "Gasull Llampallas, Antoni"
Ara es mostren els items 55-72 de 72
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Partition coding using multi-grid chain code and motion compensation
Marqués Acosta, Fernando; Gasull Llampallas, Antoni (IEEE, 1996)
Text en actes de congrés
Accés obertIn 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 ... -
Prediction of image partitions using Fourier descriptors: application to segmentation-based coding schemes
Marqués Truyol, Francisco; Gasull Llampallas, Antoni (1998-04)
Article
Accés obertThis 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 ... -
Principio de incertidumbre en señales digitales
Lagunas Hernandez, Miguel A.; Mariño Acebal, José Bernardo; Figueiras Vidal, Aníbal R.; Carol Vilanova, Antonio; Gasull Llampallas, Antoni (1978)
Text en actes de congrés
Accés obert -
Procesado digital de imágenes para la detección y seguimiento de células
Sayrol Clols, Elisa; Gasull Llampallas, Antoni (1989)
Text en actes de congrés
Accés obertA new computerized methodology is described in which detection and tracking of human spermatozoa in semen are analized using a personal computer. Several aproaches are studied in order to quantify the number of spermatozoa ... -
Projecte COM@WEB: plataforma web d'aprenentatge intel•ligent de processament del Senyal i Comunicacions.
Cabrera-Bean, Margarita; Fernández Rubio, Juan Antonio; Giró, Xavier; Closas, Pau; Rey Micolau, Francesc; Fernández Prades, Carlos; Sala, Josep; Villares Piera, Nemesio Javier; Gasull Llampallas, Antoni; Casas Pla, Josep Ramon (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2007-06-28)
Text en actes de congrés
Accés obertLa plataforma d’e-learning: comweb.upc.edu és una eina multimèdia de suport a l’estudi, l’experimentació i l’adquisició de tècniques d’auto-aprenentatge. COM@WEB s’ofereix com a punt de trobada entre estudiants, professors ... -
Recursive image sequence segmentation by hierarchical models
Marqués Acosta, Fernando; VERA, V; Gasull Llampallas, Antoni (. IEEE COMPUTER SOCIETY PRESS., 1994)
Text en actes de congrés
Accés obertThis paper addresses the problem of image sequence segmentation. A technique using a sequence model based on compound random fields is presented. This technique is recursive in the sense that frames are processed in the ... -
Region-based caption text extraction
León Cristóbal, Miriam; Vilaplana Besler, Verónica; Gasull Llampallas, Antoni; Marqués Acosta, Fernando (Springer, 2013)
Article
Accés obertThis chapter presents a method for caption text detection. The proposed method will be included in a generic indexing system dealing with other semantic concepts which are to be automatically detected as well. To have a ... -
Region-based caption text extraction
León Cristóbal, Míriam; Vilaplana Besler, Verónica; Gasull Llampallas, Antoni; Marqués Acosta, Fernando (Springer, 2013)
Capítol de llibre
Accés restringit per política de l'editorialThis chapter presents a method for caption text detection. The proposed method will be included in a generic indexing system dealing with other semantic concepts which are to be automatically detected as well. To have a ... -
Region-based caption text extraction
León Cristóbal, Míriam; Vilaplana Besler, Verónica; Gasull Llampallas, Antoni; Marqués Acosta, Fernando (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
Text en actes de congrés
Accés obertThis paper presents a method for caption text detection. The proposed method will be included in a generic indexing system dealing with other semantic concepts which are to be automatically detected as well. To have a ... -
Segmentacion de imagenes mediante modelos de Gibbs-Markov
Marqués Acosta, Fernando; Gasull Llampallas, Antoni (1991)
Text en actes de congrés
Accés obertA coding oriented image segmentation algorithm is presented. This new method is based on Gibbs-Markov Random Fields (GMRF) for contourn information, a stationary gaussian model for region interna! information, and a ... -
Segmentacion de imagenes multiespectrales con tecnicas piramidales
Marqués Acosta, Fernando; Gasull Llampallas, Antoni (Universidad de Málaga, 1992)
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Accés obert -
Senyals i sistemes analògics : una introducció pràctica
Sayrol Clols, Elisa; Gasull Llampallas, Antoni; Moreno Bilbao, M. Asunción; Salavedra Molí, Josep; Vallverdú Bayés, Sisco (Edicions UPC, 2001)
Llibre
Accés restringit a la comunitat UPCAquest material didàctic de caràcter experimental s'adreça a aquells alumnes que s'introdueixen en l'estudi dels senyals i els sistemes analògics tant en el domini temporal com en el de freqüència. Els seus continguts han ... -
Temporal automatic edge detection of echocardiographic images
Torres Urgell, Lluís; Gasull Llampallas, Antoni (1990)
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Accés obert -
Técnicas de preprocesado para la segmentación de imágenes
Gasull Llampallas, Antoni; Marqués Acosta, Fernando; Montolio, P.; Torres Urgell, Lluís (Universidad de Málaga, 1992)
Text en actes de congrés
Accés obert -
Una aproximación experimental a las señales y sistemas analógicos
Sayrol Clols, Elisa; Gasull Llampallas, Antoni; Moreno Bilbao, M. Asunción; Salavedra Molí, Josep; Vallverdú Bayés, Sisco (2000)
Text en actes de congrés
Accés obertSe presenta en este artículo un material docente para la enseñanza de las señales y los sistemas analógicos. El enfoque que se ha dado es eminentemente aplicado. Se presenta un conjunto muy completo de ejercicios, problemas ... -
Unsupervised segmentation controlled by morphological contrast ext
Marqués Acosta, Fernando; Gasull Llampallas, Antoni (. ICASSP, 1993)
Text en actes de congrés
Accés obertA 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 ... -
Use of the available information for adequate step-size actualization
Vázquez Grau, Gregorio; Gasull Llampallas, Antoni (1987)
Text en actes de congrés
Accés obertThis paper deals with the use of the available information for the update of the step-size in gradient-based adaptive methods. Several proposals are made and due to the relatively high computational cost, more efficient ... -
Uso del conocimiento estadístico de la señal para la mejora de la velocidad de convergencia de los algoritmos adaptativos de gradiente
Vázquez Grau, Gregorio; Gasull Llampallas, Antoni; Lagunas Hernandez, Miguel A. (Consejo Superior de Investigaciones Científicas (CSIC), 1986)
Text en actes de congrés
Accés obertThis work deals with the use of previous or colateral information to improve the behaviour of adaptive algorithms. The study is made on gradient-based methods due to the relatively simple and good performances that they ...