Benvinguts al Repositori Digital de la UPF

Visualitzant Departament de Tecnologies de la Informació i les Comunicacions per títol

Visualitzant Departament de Tecnologies de la Informació i les Comunicacions per títol

Ordena per: Ordre: Resultats:

  • Bertalmío, Marcelo; Batard, Thomas (International Press of Boston, 2016)
    We extend two existing variational models from the Euclidean space to a vector bundle over a Riemannian manifold. The Euclidean models, dedicated to regularize or enhance some color image features, are based on the concept ...
  • Caro Repetto, Rafael; Serra, Xavier (2017)
    The MIR research on jingju (also known as Beijing or Peking opera) music has taken audio as the main source of information. Music scores are an important resource for the musicological research of this tradition, but ...
  • Panagiotaropoulos, Theofanis I.; Kapoor, Vishal; Logothetis, N.; Deco, Gustavo (Public Library of Science, 2013)
    The neural correlates of conscious visual perception are commonly studied in paradigms of perceptual multistability that/nallow multiple perceptual interpretations during unchanged sensory stimulation. What is the source ...
  • Sfairopoulou, Anna; Bellalta, Boris; Macián, Carlos; Oliver Riera, Miquel (Springer Verlag, 2010)
    In multi-rate WLANs, users can suffer transmission rate changes due to the link adaptation mechanism. This results in a variable capacity channel, which is very hostile for VoIP and can cause serious quality of service ...
  • García-Pablos, Aitor; Cuadros Oller, Montse; Rigau Claramunt, German (ELRA (European Language Resources Association), 2016)
    A key point in Sentiment Analysis is to determine the polarity of the sentiment implied by a certain word or expression. In basic Sentiment Analysis systems this sentiment polarity of the words is accounted and weighted ...
  • Sezginer, Serdar; Sari, Hikmet; Biglieri, Ezio (Institute of Electrical and Electronics Engineers (IEEE), 2008)
    Multiple-input multiple-output (MIMO) techniques have become an essential part of broadband wireless communications systems. For example, the recently developed IEEE 802.16e specifications for broadband wireless access ...
  • Bosch, Juan J.; Bittner, Rachel M.; Salamon, Justin; Gómez Gutiérrez, Emilia, 1975- (International Society for Music Information Retrieval (ISMIR), 2016)
    This work explores the use of source-filter models for pitch/nsalience estimation and their combination with different/npitch tracking and voicing estimation methods for automatic/nmelody extraction. Source-filter models ...
  • Martinez, Alfonso; Scarlett, Jonathan; Dalai, Marco; Guillén i Fàbregas, Albert (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    This paper derives a saddlepoint approximation for the random-coding bound to the error probability of channel coding by using complex-integration techniques. The approximation is given by a sum of two terms: one with ...
  • Oliver, Maria; Haro Ortega, Gloria; Dimiccoli, Mariella; Mazin, Baptiste; Ballester, Coloma (Springer, 2016)
    This paper presents a computational model to recover the most likely interpretation of the 3D scene structure from a planar image, where some objects may occlude others. The estimated scene interpretation is obtained by ...
  • García Cañadilla, Patricia, 1985-; Rudenick, Paula A.; Crispi Brillas, Fàtima; Cruz-Lemini, Mónica; Palau, Georgina; Camara, Oscar; Gratacós Solsona, Eduard; Bijnens, Bart (Public Library of Science, 2014)
    Intrauterine growth restriction (IUGR) due to placental insufficiency is associated with blood flow redistribution in order to/nmaintain delivery of oxygenated blood to the brain. Given that, in the fetus the aortic isthmus ...
  • Serra, Xavier (International Computer Music Conference, 1986)
    This paper presents a computer model for bar percussion instruments that captures their main physical characteristics in a very flexible structure. The starting point is current knowledge of the acoustics of the instruments. ...
  • Malinverni, Laura; Valero, Cristina; Schaper, Marie-Monique; Parés, Narcís, 1966- (ACM Association for Computer Machinery, 2018)
    Augmented and Mixed Reality mobile technologies are becoming an emerging trend in the development of play and learning experiences for children. This tendency requires a deeper understanding of their specificities to ...
  • Pérez Sanagustín, Maria del Mar; Santos Rodríguez, Patrícia; Moghnie, Ayman; Hernández Leo, Davinia; Blat, Josep (Inderscience Enterprises Ltd, 2009)
    The emergence of the Web 2.0 technologies in the last years have/nchanged the way people interact with knowledge. Services for cooperation and/ncollaboration have placed the user in the centre of a new knowledge building/nspace. ...
  • Cardelino, Juan; Caselles, Vicente; Bertalmío, Marcelo; Randall, Gregory (SIAM (Society for Industrial and Applied Mathematics), 2013)
    We present a novel segmentation algorithm based on a hierarchical representation of images. The main contribution of this work is to explore the capabilities of the a contrario reasoning when applied to the segmentation ...
  • Uyar, Burak; Atli, Hasan Sercan; Sentürk, Sertan; Bozkurt, Baris; Serra, Xavier (ACM Association for Computer Machinery, 2014)
    Each music tradition has its own characteristics in terms of melodic, rhythmic and timbral properties as well as semantic understandings. To analyse, discover and explore these culture-specific characteristics, we need ...
  • Scarlett, Jonathan; Somekh-Baruch, Anelia; Martinez, Alfonso; Guillén i Fàbregas, Albert (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    This paper studies the mismatched decoding problem for binary-input discrete memoryless channels. An example is provided for which an achievable rate based on superposition coding exceeds the Csiszár-Körner-Hui rate, thus ...
  • Pasarella Sánchez, Ana Edelmira; Lobo, Jorge (ACM Association for Computer Machinery, 2017)
    Relationships like friendship to limit access to resources have been part of social network applications since their beginnings. Describing access control policies in terms of relationships is not particular to social ...
  • Ghimpeteanu, Gabriela; Batard, Thomas; Bertalmío, Marcelo; Levine, Stacey (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    In this paper, we consider an image decomposition model that provides a novel framework for image denoising. The model computes the components of the image to be processed in a moving frame that encodes its local geometry ...
  • Oramas, Sergio; Nieto Caballero, Oriol; Sordo, Mohamed; Serra, Xavier (ACM Association for Computer Machinery, 2017)
    An increasing amount of digital music is being published daily. Music streaming services often ingest all available music, but this poses a challenge: how to recommend new artists for which prior knowledge is scarce? In ...
  • Štajner , Sanja; Béchara, Hannah; Saggion, Horacio (ACL (Association for Computational Linguistics), 2015)
    In the last few years, there has been a growing number of studies addressing the Text Simplification (TS) task as a monolingual machine translation (MT) problem which translates from ‘original’ to ‘simple’ language. ...