A novel macroblock-level filtering upsampling architecture for H.264/AVC scalable extension

  • Authors:

  • Thaísa Leal da Silva;Luís Alberto da Silva Cruz;Luciano Volcan Agostini

  • Affiliations:

  • Universidade de Coimbra, Coimbra, Portugal;Universidade de Coimbra, Coimbra, Portugal;Universidade Federal de Pelotas, Pelotas, Brazil

  • Venue:
  • SBCCI '10 Proceedings of the 23rd symposium on Integrated circuits and system design
  • Year:
  • 2010

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Abstract

The scalable extension of the H.264/AVC standard (loosely called H.264/SVC) uses spatial upsampling in the spatial scalability modes. This work presents a novel upsampling architecture designed for operation at macroblock level and dyadic upsampling ratio with QVGA as the base layer resolution and VGA as the enhancement resolution. The adoption of a macroblock-level solution translates into a more efficient use of hardware resources with savings of approximately 25% in the number of ALUTs and DLRs and using about two hundred times less memory bits, when compared to previously published works. Moreover the timing analysis results show that this architecture has a worst-case processing rate of 465 VGA frames per second, far exceeding the throughput necessary to decode VGA resolution videos in real time.