A novel intra/inter mode decision algorithm for H.264/AVC based on spatio-temporal correlation

  • Authors:

  • Qiong Liu;Shengfeng Ye;Ruimin Hu;Zhen Han

  • Affiliations:

  • Computer School of Wuhan University, Wuhan, China;Computer School of Wuhan University, Wuhan, China;Computer School of Wuhan University, Wuhan, China;The Key Laboratory of Multimedia and Network Communications Engineering, Wuhan, China

  • Venue:
  • MMM'07 Proceedings of the 13th international conference on Multimedia Modeling - Volume Part I
  • Year:
  • 2007

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Abstract

The high computation burden of mode decision procedure is a challenge to extensive application of H.264/AVC. In this paper, we present a binary mode decision scheme that intra/inter coding mode is decided without performing the exhaustive spatial prediction and motion estimation search. This decision algorithm is based on spatio-temporal feature of current macroblock. And a fast adaptive intra prediction algorithm is provided for further timesaving. By avoiding a large amount of prediction processing, the computation complexity can be greatly reduced. Experimental results indicated that the proposed algorithm, compared by full-search algorithm, can achieve reduction of 54.60% encoding time on average, with a negligible average PSNR loss of only 0.0085 dB and a mere 0.28% bit-rate increase.