Forward wyner-ziv fast video decoding using multicore processors

  • Authors:

  • Alberto Corrales-Garcia;José Luis Martínez;Gerardo Fernández-Escribano;Francisco Jose Quiles

  • Affiliations:

  • Instituto de Investigación en Informática de Albacete (I3A), University of Castilla-La Mancha, Albacete, Spain;Architecture and Technology of Computing Systems Group, Complutense University, Madrid, Spain;Instituto de Investigación en Informática de Albacete (I3A), University of Castilla-La Mancha, Albacete, Spain;Instituto de Investigación en Informática de Albacete (I3A), University of Castilla-La Mancha, Albacete, Spain

  • Venue:
  • MMM'12 Proceedings of the 18th international conference on Advances in Multimedia Modeling
  • Year:
  • 2012

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Abstract

With the aim of providing low complexity encoders, Wyner-Ziv video coding provides a new paradigm where the complexity of the encoder is moved to the decoder. However, this high decoding complexity could involve a problem in some applications which have delay restrictions. Nowadays parallel computing is a growing field into the computation market. In particular, most of personal computers and hardware for video coding includes multicore processors, which allows a parallel execution by means of several independent cores in a same chip. As a consequence, several DVC parallel decoding approaches are beginning to appear. This work proposes a parallel DVC decoding scheme for multicore processors, which decodes each GOP in an independent and parallel way. This scheme achieves above 70% time reduction without any rate-distortion penalty.