High speed intra mode and direction prediction for MPEG-2 to H.264/AVC realtime transcoder

Tarek A. Elarabi; Ahmed M. Ragab; Hanan Mahmoud; Magdy Bayoumi

doi:10.1109/SiPS.2011.6088953

High speed intra mode and direction prediction for MPEG-2 to H.264/AVC realtime transcoder

Tarek A. Elarabi, Ahmed M. Ragab, Hanan Mahmoud, Magdy Bayoumi

School of Engineering (Behrend)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

5 Scopus citations

Abstract

The paper presents a significantly fast INTRA mode and direction prediction algorithm for MPEG-2 to H.264/AVC time sensitive transcoders for mobile applications. The mode and direction prediction in H.264/AVC encoder is responsible for a huge portion of the delay in the transcoder. An efficient transcoder would take advantage of the information stored in MPEG-2 bitstream (i.e. DCT coefficients) to simplify the IN-TRA prediction in H.264/AVC. Based on the spatial activity analysis using a smoothness determining factor and an edge orientation detector, an early mode decision technique and an INTRA direction prediction for each mode are proposed. The proposed algorithm utilizes the DCT coefficients of the MPEG-2 to eliminate redundant operations in the H.264/AVC encoder part of the transcoder. The Experimental results; using frames with different resolution; show 92% transcoding time elimination at slight PSNR degradation (less than 3.5%) compared with the conventional transcoder.

Original language	English (US)
Title of host publication	2011 IEEE Workshop on Signal Processing Systems, SiPS 2011, Proceedings
Pages	78-83
Number of pages	6
DOIs	https://doi.org/10.1109/SiPS.2011.6088953
State	Published - 2011
Event	2011 IEEE Workshop on Signal Processing Systems, SiPS 2011 - Beirut, Lebanon Duration: Oct 4 2011 → Oct 7 2011

Other

Other	2011 IEEE Workshop on Signal Processing Systems, SiPS 2011
Country	Lebanon
City	Beirut
Period	10/4/11 → 10/7/11

All Science Journal Classification (ASJC) codes

Signal Processing

Access to Document

10.1109/SiPS.2011.6088953

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Cite this

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title = "High speed intra mode and direction prediction for MPEG-2 to H.264/AVC realtime transcoder",

abstract = "The paper presents a significantly fast INTRA mode and direction prediction algorithm for MPEG-2 to H.264/AVC time sensitive transcoders for mobile applications. The mode and direction prediction in H.264/AVC encoder is responsible for a huge portion of the delay in the transcoder. An efficient transcoder would take advantage of the information stored in MPEG-2 bitstream (i.e. DCT coefficients) to simplify the IN-TRA prediction in H.264/AVC. Based on the spatial activity analysis using a smoothness determining factor and an edge orientation detector, an early mode decision technique and an INTRA direction prediction for each mode are proposed. The proposed algorithm utilizes the DCT coefficients of the MPEG-2 to eliminate redundant operations in the H.264/AVC encoder part of the transcoder. The Experimental results; using frames with different resolution; show 92% transcoding time elimination at slight PSNR degradation (less than 3.5%) compared with the conventional transcoder.",

author = "Elarabi, {Tarek A.} and Ragab, {Ahmed M.} and Hanan Mahmoud and Magdy Bayoumi",

year = "2011",

doi = "10.1109/SiPS.2011.6088953",

language = "English (US)",

isbn = "9781457719219",

pages = "78--83",

booktitle = "2011 IEEE Workshop on Signal Processing Systems, SiPS 2011, Proceedings",

note = "2011 IEEE Workshop on Signal Processing Systems, SiPS 2011 ; Conference date: 04-10-2011 Through 07-10-2011",

}

Elarabi, TA, Ragab, AM, Mahmoud, H & Bayoumi, M 2011, High speed intra mode and direction prediction for MPEG-2 to H.264/AVC realtime transcoder. in 2011 IEEE Workshop on Signal Processing Systems, SiPS 2011, Proceedings., 6088953, pp. 78-83, 2011 IEEE Workshop on Signal Processing Systems, SiPS 2011, Beirut, Lebanon, 10/4/11. https://doi.org/10.1109/SiPS.2011.6088953

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AU - Elarabi, Tarek A.

AU - Ragab, Ahmed M.

AU - Mahmoud, Hanan

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N2 - The paper presents a significantly fast INTRA mode and direction prediction algorithm for MPEG-2 to H.264/AVC time sensitive transcoders for mobile applications. The mode and direction prediction in H.264/AVC encoder is responsible for a huge portion of the delay in the transcoder. An efficient transcoder would take advantage of the information stored in MPEG-2 bitstream (i.e. DCT coefficients) to simplify the IN-TRA prediction in H.264/AVC. Based on the spatial activity analysis using a smoothness determining factor and an edge orientation detector, an early mode decision technique and an INTRA direction prediction for each mode are proposed. The proposed algorithm utilizes the DCT coefficients of the MPEG-2 to eliminate redundant operations in the H.264/AVC encoder part of the transcoder. The Experimental results; using frames with different resolution; show 92% transcoding time elimination at slight PSNR degradation (less than 3.5%) compared with the conventional transcoder.

AB - The paper presents a significantly fast INTRA mode and direction prediction algorithm for MPEG-2 to H.264/AVC time sensitive transcoders for mobile applications. The mode and direction prediction in H.264/AVC encoder is responsible for a huge portion of the delay in the transcoder. An efficient transcoder would take advantage of the information stored in MPEG-2 bitstream (i.e. DCT coefficients) to simplify the IN-TRA prediction in H.264/AVC. Based on the spatial activity analysis using a smoothness determining factor and an edge orientation detector, an early mode decision technique and an INTRA direction prediction for each mode are proposed. The proposed algorithm utilizes the DCT coefficients of the MPEG-2 to eliminate redundant operations in the H.264/AVC encoder part of the transcoder. The Experimental results; using frames with different resolution; show 92% transcoding time elimination at slight PSNR degradation (less than 3.5%) compared with the conventional transcoder.

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