Listar GI-GAC - Artigos por autor "Amor, Margarita"

Mostrando ítems 1-15 de 15

    • A multi-GPU shallow-water simulation with transport of contaminants 

      Viñas Buceta, Moisés; Lobeiras Blanco, Jacobo; Fraguela, Basilio B.; Arenaz Silva, Manuel; Amor, Margarita; García Rodríguez, José Antonio; Castro, M.J.; Doallo, Ramón (Wiley, 2012)
      [Abstract] This work presents cost-effective multi-graphics processing unit (GPU) parallel implementations of a finite-volume numerical scheme for solving pollutant transport problems in bidimensional domains. The fluid ...

    • Big Data Geospatial Processing for Massive Aerial LiDAR Datasets 

      Deibe, David; Amor, Margarita; Doallo, Ramón (M D P I AG, 2020-02-21)
      [Abstract] For years, Light Detection and Ranging (LiDAR) technology has been considered as a challenge when it comes to developing efficient software to handle the extremely large volumes of data this surveying method is ...

    • Big Data Geospatial Processing for Massive Aerial LiDAR Datasets 

      Deibe, David; Amor, Margarita; Doallo, Ramón (MDPI AG, 2020-02-21)
      [Abstract] For years, Light Detection and Ranging (LiDAR) technology has been considered as a challenge when it comes to developing efficient software to handle the extremely large volumes of data this surveying method is ...

    • BPLG–BMCS: GPU-sorting algorithm using a tuning skeleton library 

      Pérez Diéguez, Adrián; Amor, Margarita; Doallo, Ramón (Springer New York LLC, 2017)
      [Abstract] In this work, we present an efficient and portable sorting operator for GPUs. Specifically, we propose an algorithmic variant of the bitonic merge sort which reduces the number of processing stages and internal ...

    • Efficient high-precision integer multiplication on the GPU 

      Pérez Diéguez, Adrián; Amor, Margarita; Doallo, Ramón; Nukada, Akira; Matsuoka, Satoshi (SAGE Journals, 2022-03)
      [Abstract]: The multiplication of large integers, which has many applications in computer science, is an operation that can be expressed as a polynomial multiplication followed by a carry normalization. This work develops ...

    • GVLiDAR: an interactive web-based visualization framework to support geospatial measures on lidar data 

      Deibe Seoane, David; Amor, Margarita; Doallo, Ramón; Miranda, David; Cordero, Miguel (Taylor & Francis, 2017)
      [Abstract] In recent years lidar technology has experienced a noticeable increase in its relevance and usage in a number of scientific fields. Therefore, software capable of handling lidar data becomes a key point in those ...

    • Interactive Rendering of NURBS Surfaces 

      Concheiro, Raquel; Amor, Margarita; Padrón, Emilio J.; Doggett, Michael (Pergamon Press, 2014)
      [Abstract] NURBS (Non-uniform rational B-splines) surfaces are one of the most useful primitives employed for high quality modeling in CAD/CAM tools and graphics software. Since direct evaluation of NURBS surfaces on the ...

    • Interactive Visualization of Large Point Clouds Using an Autotuning Multiresolution Out-Of-Core Strategy 

      Teijeiro, Diego; Amor, Margarita; Doallo, Ramón; Deibe, David (Oxford University Press, 2023)
      [Abstract]: Due to the increasingly large amount of data acquired into point clouds, from LiDAR (Light Detection and Ranging) sensors and 2D/3D sensors, massive point clouds processing has become a topic with high interest ...

    • Parallel Hierarchical Radiosity on Hybrid Platforms 

      Padrón, Emilio J.; Amor, Margarita; Bóo, Montserrat; Doallo, Ramón; Rodríguez, Gabriel (Springer Verlag, 2011-12)
      [Abstract] Achieving an efficient realistic illumination is an important aim of research in computer graphics. In this paper a new parallel global illumination method for hybrid systems based on the hierarchical radiosity ...

    • Parallelization of shallow water simulations on current multi-threaded systems 

      Lobeiras Blanco, Jacobo; Viñas Buceta, Moisés; Amor, Margarita; Fraguela, Basilio B.; Arenaz Silva, Manuel; García Rodríguez, José Antonio; Castro, M.J. (SAGE Journals, 2013-11)
      [Abstract]: In this work, several parallel implementations of a numerical model of pollutant transport on a shallow water system are presented. These parallel implementations are developed in two phases. First, the sequential ...

    • Portable and efficient FFT and DCT algorithms with the Heterogeneous Butterfly Processing Library 

      Vázquez Pardo, Sergio; Amor, Margarita; Fraguela, Basilio B. (Elsevier, 2019-03)
      [Abstract]: The existence of a wide variety of computing devices with very different properties makes essential the development of software that is not only portable among them, but which also adapts to the properties of ...

    • Rendering of Bézier Surfaces on Handheld Devices 

      Concheiro, Raquel; Amor, Margarita; Padrón, Emilio J.; Gil, Marisa; Martorell, Xavier (Vaclav Skala - Union Agency, 2013)
      [Abstract] Bézier surfaces have been widely employed in the designing of complex scenes with high-quality results. Nevertheless, parametric surfaces cannot be directly rendered in the current GPUs of modern handheld devices. ...

    • Solving Large Problem Sizes of Index-Digit Algorithms on GPU: FFT and Tridiagonal System Solvers 

      Pérez Diéguez, Adrián; Amor, Margarita; Lobeiras Blanco, Jacobo; Doallo, Ramón (Institute of Electrical and Electronics Engineers, 2018)
      [Abstract] Current Graphics Processing Units (GPUs) are capable of obtaining high computational performance in scientific applications. Nevertheless, programmers have to use suitable parallel algorithms for these architectures ...

    • Supporting multi-resolution out-of-core rendering of massive LiDAR point clouds through non-redundant data structures 

      Deibe, David; Amor, Margarita; Doallo, Ramón (Taylor & Francis Group, 2019-03)
      [Abstract]: In recent years, the evolution and improvement of LiDAR (Light Detection and Ranging) hardware has increased the quality and quantity of the gathered data, making the storage, processing and management thereof ...

    • Tree Partitioning Reduction: A New Parallel Partition Method for Solving Tridiagonal Systems 

      Pérez Diéguez, Adrián; Amor, Margarita; Doallo, Ramón (Association for Computing Machinery (ACM), 2019-08)