Zero-block inter/intra mode decision for MPEG-2 to H.264/AVC inter P-frame transcoding

C. J. Su, Y. Lin

研究成果: 雜誌貢獻期刊論文同行評審

7 引文 斯高帕斯(Scopus)

摘要

The latest H.264/AVC achieves better coding performance compared to prior video coding standards such as MPEG-2. To provide the interoperability between MPEG-2 and H.264/AVC, the authors propose an efficient inter/intra mode decision for MPEG-2 to H.264/AVC inter P-frame transcoding, which is completed in two stages. In the first stage, a zero-block inter/intra mode decision scheme is employed to select both candidate inter/intra modes for prediction based on MPEG-2 coded macroblock type and motion vector information. Fast motion estimation with various search windows is then incorporated into inter mode decision to improve computation to a great extent. For intra mode decision the authors suggest a sum of absolute transform differences based intra mode decision scheme to further eliminate improbable modes for rate-distortion optimisation calculations. The experimental results reveal that average 85% of computation time (a speed-up factor of seven) can be reduced compared to the fully decoding/encoding procedure. The degradation in the rate-distortion performance is fairly small.

原文???core.languages.en_GB???
頁(從 - 到)494-504
頁數11
期刊IET Image Processing
4
發行號6
DOIs
出版狀態已出版 - 12月 2010

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