Motion attention based frame-level bit allocation scheme for H.264

  • Authors:

  • Liquan Shen;Zhi Liu;Zhaoyang Zhang;Hongbo Yan

  • Affiliations:

  • Shanghai University, China;Shanghai University, China;Shanghai University, China;Shanghai University, China

  • Venue:
  • Proceedings of the First International Conference on Internet Multimedia Computing and Service
  • Year:
  • 2009

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Abstract

Rate control plays a major role in video coding and multimedia streaming. A well-designed rate control scheme should pursue both the objective quality and subjective quality. However, existing H.264 rate control algorithms mainly aim at improving the objective quality without consideration the perception of human view system (HVS). In this paper, we propose a novel rate control algorithm based on local motion attention. The bits allocated to each frame are proportional to the local motion activity in it, and more bits are allocated to the frame with strong local motion attention. Experiment results show that our method not only enhances the coding quality in the frames with strong local motion attention but also reduces the temporal PSNR fluctuation across frames up to 22.15%.