University of Hertfordshire

By the same authors

Fast mode selection to reduce the encoding complexity of H.264/AVC

Research output: Chapter in Book/Report/Conference proceedingConference contribution


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Original languageEnglish
Title of host publicationProcs IEEE Int. Symp. on Circuits and Systems (ISCAS 2008)
ISBN (Print)978-1-4244-1683-7
Publication statusPublished - 2008


Fast mode selection is one of the hottest research
topics for H.264/AVC finalized in 2003. Since the computational
complexity is still a major challenge for real-time applications,
simplification of mode selection is therefore very important. A
fast mode selection algorithm is proposed in this paper. By
removing low-probability modes according to the correlative
characteristic in macroblock mode selection and the statistical
characteristic of sub-macroblock mode selection, the calculation
of mode selection process is significantly reduced. Based on the
experimental results, the encoding time can be saved 55.91% on
average, and in most cases the degradation of video quality is
limited in 0.15dB with less than 2% increase of bitrate.

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