• A Framework For TV Logos Learning Using Linear Inverse Diffusion Filters For Noise Removal 

      Ramos Cózar, Julián; Zeljković, Vesna; González-Linares, José M.; Guil, Nicolás; Tameze, Claude; [et al.] (IEEE, 2013)
      Different logotypes represent significant cues for video annotations. A combination of temporal and spatial segmentation methods can be used for logo extraction from various video contents. To achieve this segmentation, ...
    • Performance Analysis of the Multi-pass Transformation for Complex 3D-Stencils on GPUs 

      López-Zapata, Emilio; Romero, Luis F.; Tabik, Siham (2013-09-25)
      Performance Analysis of the Multi-pass Transformation for Complex 3D-Stencils on GPUs
    • GPUs para HPC: Logros y perspectivas futuras 

      Ujaldón, Manuel (2013-10-18)
      Hace una década comenzábamos a mejorar las primeras aplicaciones científicas en GPUs utilizando Cg y OpenGL. Ahora CUDA y OpenCL han tomado el relevo, marcando un ritmo vertiginoso en la aceleración de códigos procedentes ...
    • Quantifying the regeneration of bone tissue in biomedical images via Legendre moments 

      Lachiondo, José Antonio; Ujaldón, Manuel; Berretta, Regina; Moscato, Pablo (2013-10-21)
      We investigate the use of Legendre moments as biomarkers for an efficient and accurate classification of bone tissue on images coming from stem cell regeneration studies. Regions of either existing bone, cartilage or ...
    • Efficient Floating-Point Representation for Balanced Codes for FPGA Devices 

      Villalba-Moreno, Julio; Hormigo-Aguilar, Javier; Corbera, Francisco; Gonzalez, Mario; López-Zapata, Emilio (2013-10-30)
      We propose a floating–point representation to deal efficiently with arithmetic operations in codes with a balanced number of additions and multiplications for FPGA devices. The variable shift operation is very slow in ...
    • Aspectos computacionales en la bisección de un n-simplex regular. 

      Aparicio, Gillermo; Casado, L.G.; Garcia, I.; Hendrix, Eligius Maria Theodorus; Toth, B.G. (2013-11-05)
      En el ambito de la optimizacion global basada en tecnicas de ramificacion y acotacion, cuando el espacio de busqueda es un n-simplex regular es habitual utilizar como regla de division la biseccion por el lado mayor. ...
    • Solución de múltiples sistemas lineales en GPUs 

      Molero, Jose Manuel; Plaza, Antonio; Martín-Garzón, Esther; García-Fernández, Inmaculada; Quintana-Ortí, Enrique S. (2013-11-05)
      Este trabajo se centra en el calculo, de forma concurrente, de múltiples sistemas lineales definidos por matrices densas de una dimensión media. Se considera una solución basada en la factorización de Cholesky y su ...
    • An Experience of e-assessment in an Introductory Course on Computer Organization 

      Ramos Cózar, Julián; Gutiérrez Carrasco, Eladio D.; Trenas, María A.; Corbera, Francisco; Romero, Sergio (2013-11-13)
      This work describes how the CTPracticalsMoodle module can be used for e-assessment in an introductory course on computer organization, where the practical content consists of the design and simulation of a basic CPU ...
    • Entropy-based High Performance Computation of Boolean SNP-SNP Interactions Using GPUs 

      Riveros, Carlos; Ujaldón, Manuel; Pablo, Moscato (2014-05-02)
      It is being increasingly accepted that traditional statistical Single Nucleotide Polymorphism (SNP) analysis of Genome-Wide Association Studies (GWAS) reveals just a small part of the heritability in complex diseases. ...
    • Acelerando los momentos de Zernike sobre Kepler 

      Ruiz, Antonio; Ujaldón, Manuel (2014-05-02)
      Este trabajo analiza las características más avanzadas de la arquitectura Kepler de Nvidia, principalmente el paralelismo dinámico para el lanzamiento de kernels desde la GPU y la planificación de hilos con Hyper-Q. ...
    • Pre-Ictal Phase Detection with SVMs 

      Ramos Cózar, Julián; Zeljković, Vesna; González-Linares, José M.; Guil, Nicolás; Bojic, Milena; [et al.] (2014-07-29)
      Over 50 million persons worldwide are affected by epilepsy. Epilepsy is a brain disorder known for sudden, unexpected transitions from normal to pathological behavioral states called epileptic seizures. Epilepsy poses a ...
    • Low-textured regions detection for improving stereoscopy algorithms 

      Ibarra-Delgado, Salvador; Ramos Cózar, Julián; González-Linares, José M.; Gómez Luna, Juan; Guil, Nicolás (2014-07-29)
      The main goal of stereoscopy algorithms is the calculation of the disparity map between two frames corresponding to the same scene, and captured simultaneously by two different cameras. The different position (disparity) ...
    • Adaptive Partition Strategies for Loop Parallelism in Heterogeneous Architectures 

      Vilches, Antonio; Asenjo-Plaza, Rafael; Corbera, Francisco; Navarro, Ángeles (2014-07-30)
      This paper explores the possibility of efficiently using multicores in conjunction with multiple GPU accelerators under a parallel task programming paradigm. In particular, we address the challenge of extending a ...
    • Localizando partículas en un fluido a partir de holografías y computación de altas prestaciones 

      Ortega, Gloria; Lobera, Julia; García, Inmaculada; Arroyo, Maria del Pilar; Garzon, Ester M. (2014-09-24)
      La tomografía se ha introducido recientemente en la velocimetría de fluidos para proporcionar información en tres dimensiones de la localización de partículas en el seno de fluidos. En concreto, algunos trabajos previos ...
    • Paralelismo de datos en la obtención de Tablas de Control de Tráfico con información de llegada 

      Herrera, Juan Francisco R.; Casado, Leocadio G.; Haijema, Rene; Hendrix, Eligius Maria Theodorus (2014-09-24)
      Los semáforos se pueden controlar de forma dinámica a través de varias reglas que dictaminan el color del semáforo segun el número de vehículos a la espera. Estas reglas o acciones se recogen en lo que se conoce como ...
    • On the parallelization of a three-parametric log-logistic estimation algorithm 

      Asenjo-Plaza, Rafael; Rodríguez, Andrés; Navarro, Ángeles; Fernández-Madrigal, Juan Antonio; Cruz-Martin, Ana Maria (2014-09-25)
      Networked telerobots transmit data from its sensors to the remote controller. To provide guarantees on the time requirements of these systems it is mandatory to keep the transmission time delays below a given threshold, ...
    • CUVLE: Variable-Length Encoding on CUDA 

      Fuentes-Alventosa, Antonio; Gómez-Luna, Juan; González-Linares, José M.; Guil, Nicolás (2014-10-14)
      Data compression is the process of representing information in a compact form, in order to reduce the storage requirements and, hence, communication bandwidth. It has been one of the critical enabling technologies for ...
    • Scalability Analysis of Signatures in Transactional Memory Systems 

      Quislant, Ricardo; Eladio, Gutiérrez; Óscar, Plata (2014-10-29)
      Signatures have been proposed in transactional memory systems to represent read and write sets and to decouple transaction conflict detection from private caches or to accelerate it. Generally, signatures are implemented ...
    • Optimizing DSP Circuits by a New Family of Arithmetic Operators 

      Hormigo-Aguilar, Javier; Villalba Moreno, Julio (2014-11-19)
      A new family of arithmetic operators to optimize the implementation of circuits for digital signal processing is presented. Thanks to use of a new technique which reduces the quantification errors, the proposed operators ...
    • Reducing overheads of dynamic scheduling on heterogeneous chips 

      Corbera, Francisco; Rodríguez, Andrés; Asenjo-Plaza, Rafael; Navarro, Ángeles; Vilches, Antonio; [et al.] (arXiv.org (Cornell University Library), 2015-01-19)
      In recent processor development, we have witnessed the integration of GPU and CPUs into a single chip. The result of this integration is a reduction of the data communication overheads. This enables an efficient collaboration ...