Now showing items 1-16 of 16

    • A comparison of scalar and vector quantization of wavelet decomposed images 

      Delos, Albane (Universitat Politècnica de Catalunya, 2010)
      Master thesis (pre-Bologna period)
      Open Access
    • A performance characterization of high definition digital video decoding using H.264/AVC 

      Álvarez Mesa, Mauricio; Salamí San Juan, Esther; Ramírez Bellido, Alejandro; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2005)
      Conference report
      Open Access
      H.264/AVC is a new international video coding standard that provides higher coding efficiency with respect to previous standards at the expense of a higher computational complexity. The complexity is even higher when ...
    • Comparison of MPEG-7 descriptors for long term selection of reference frames 

      Ruiz Hidalgo, Javier; Salembier Clairon, Philippe Jean (2009)
      Conference lecture
      Open Access
      During the last years, the amount of multimedia content has greatly increased. This has multiplied the need of efficient compression of the content but also the ability to search, retrieve, browse, or filter it. Generally, ...
    • Development and Comparison of Image Encoders Based on Different Compression Techniques 

      Rosanes Siscart, Marc (Universitat Politècnica de Catalunya, 2010-02)
      Master thesis (pre-Bologna period)
      Open Access
      In this project we present some of the most relevant image compression methods of the digital era. From lossless compression techniques like Laplacian Pyramid, to the current and frequently used lossy JPEG compression ...
    • Edge-preserving depth-map coding using graph-based wavelets 

      Sánchez Blanco, Alfonso (Universitat Politècnica de Catalunya, 2010-06)
      Master thesis (pre-Bologna period)
      Open Access
      This thesis presents a new wavelet transform speci cally designed for the coding of depth images which are used in view synthesis operations. Two basic properties of these images can be leveraged: rst, errors in pixels ...
    • Embedded video compression for high dynamic range video 

      Bergesio Gonzalez, Leonardo (Universitat Politècnica de Catalunya, 2010-09-03)
      Master thesis (pre-Bologna period)
      Open Access
      Covenantee:   Trident Microsystems
      Modern digital TV-systems encompass digital demodulation and required audiovisual signal processing incorporating an uni ed-memory architecture. The bottleneck of such a System-on-Chip (SoC) is the connection to the ...
    • Entropy Coding for Image Compression Based on Generalized Lifting and SPECK 

      Alameda i Pineda, Xavier (Universitat Politècnica de Catalunya, 2009-09)
      Master thesis (pre-Bologna period)
      Open Access
      Image source coding became very important in the 80's. There were some key factors that helped to that data (image) compression revolution. First, the idea of digital image: an image composed by a set of niteprecision coe ...
    • Fusion of colour and depth partitions for depth map coding 

      Maceira Duch, Marc; Morros Rubió, Josep Ramon; Ruiz Hidalgo, Javier (2013)
      Conference report
      Restricted access - publisher's policy
      3D video coding includes the use of multiple color views and depth maps associated to each view. An adequate coding of depth maps should be adapted to the characteristics of depth maps: smooth regions and sharp edges. In ...
    • HD-VideoBench: A benchmark for evaluating high definition digital video applications 

      Álvarez Mesa, Mauricio; Salamí San Juan, Esther; Ramírez Bellido, Alejandro; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2007)
      Conference report
      Open Access
      HD-VideoBench is a benchmark devoted to high definition (HD) digital video processing. It includes a set of video encoders and decoders (Codecs) for the MPEG-2, MPEG-4 and H.264 video standards. The applications were ...
    • Implementación de un sistema de codificación de vídeo con descripción múltiple mediante submuestreo espacial polifase 

      Gallego Ezpeleta, Javier (Universitat Politècnica de Catalunya, 2009-05-14)
      Master thesis (pre-Bologna period)
      Open Access
    • Método de transmisión de video H.264/AVC implementando Adaptive Bitrate Streaming 

      Solorzáno Rosales, Edwin Miguel (Universitat Politècnica de Catalunya, 2014-11-04)
      Master thesis
      Open Access
      [ANGLES] In this paper we describe a method for transmitting H.264/AVC encoded video. The data transfer is performed by adapting data transmission to network performance in order to ensure continuous transmission. The data ...
    • Mode dependent vector quantization with a rate-distortion optimized codebook for residue coding in video compression 

      Huang, Bihong; Henry, Felix; Guillemot, Christine; Salembier Clairon, Philippe Jean (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Conference report
      Restricted access - publisher's policy
      The High Efficiency Video Coding standard (HEVC) supports a total of 35 intra prediction modes which aim at reducing spatial redundancy by exploiting pixel correlation within a local neighborhood. In this paper, we show ...
    • 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
      Restricted access - publisher's policy
      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 ...
    • Performance impact of unaligned memory operations in SIMD extensions for video CODEC applications 

      Álvarez Mesa, Mauricio; Salamí San Juan, Esther; Ramírez Bellido, Alejandro; Valero Cortés, Mateo (Institute of Electrical and Electronics Engineers (IEEE), 2007)
      Conference report
      Open Access
      Although SIMD extensions are a cost effective way to exploit the data level parallelism present in most media applications, we will show that they had have a very limited memory architecture with a weak support for unaligned ...
    • Scalability of parallel video decoding on heterogeneous manycore architectures 

      Álvarez Mesa, Mauricio; Cabarcas Jaramillo, Felipe; Ramírez Bellido, Alejandro; Meenderinck, Cor; Juurlink, Ben; Valero Cortés, Mateo (2011)
      External research report
      Open Access
      This paper presents an analysis of the scalability of the parallel video decoding on heterogeneous many core architectures. As benchmark, we use a highly parallel H.264/AVC video decoder that generates a large number of ...
    • Transmisión de vídeo H.264/AVC con control de tasa adaptativo en el servidor 

      Mata Diaz, Jorge; Solorzano, Edwin; Muñoz Tapia, José Luis; Hernández Serrano, Juan; Alins Delgado, Juan José; Esparza Martín, Óscar (2015)
      Conference report
      Restricted access - publisher's policy
      In this paper we describe a method for transmitting H.264/AVC encoded video. The data transfer is performed by adapting data transmission to network performance in order to ensure continuous transmission. The data transfer ...