Efficiency improvements for a geometric-partition-based video coder

  • Authors:

  • Renan U. Ferreira;Edson M. Hung;Ricardo L. De Queiroz;Debargha Mukherjee

  • Affiliations:

  • Universidade de Brasilia, Departamento de Engenharia Eletrica, Brasilia, Brazil;Universidade de Brasilia, Departamento de Engenharia Eletrica, Brasilia, Brazil;Universidade de Brasilia, Departamento de Engenharia Eletrica, Brasilia, Brazil;Hewlett-Packard Laboratories, Palo Alto

  • Venue:
  • ICIP'09 Proceedings of the 16th IEEE international conference on Image processing
  • Year:
  • 2009

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Abstract

H.264/AVC has brought an important increase in coding efficiency in comparison to previous video coding standards. One of its features is the use of macroblock partitioning in a tree-based structure. The use of macroblock partitions based in arbitrary line segments, like wedge partitions, has been reported to increase coding gains. The main problem of these non-standard new partitions schemes is the increase in computational complexity. Thus, our work proposes improvements in this extension to the H.264/AVC standard. First, we present a motion vector prediction scheme based on directional partitions. Second, we present a method for complexity reduction based on the most frequent partitions. The results show that it is possible to still produce good coding gains with lower complexity than previous approaches.