Content-Based Complexity Reduction Methods for MPEG-2 to H.264 Transcoding(<Special Section>Advanced Image Technology)

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概要

• 論文の詳細を見る

• The coexistence of MPEG-2 and its powerful successor H.264/AVC has created a huge need for MPEG-2/H.264 video transcoding. However, a traditional transcoder where an MPEG-2 decoder is simply cascaded to an H.264 encoder requires huge computational power due to the adoption of a complicated rate-distortion based mode decision process in H.264. This paper proposes a 2-D Sobel filter based motion vector domain method and a DCT domain method to measure macroblock complexity and realize content-based H.264 candidate mode decision. A new local edge based fast INTRA prediction mode decision method is also adopted to boost the encoding efficiency. Simulation results confirm that with the proposed methods the computational burden of a traditional transcoder can be reduced by 20%〜30% with only a negligible bit-rate increase for a wide range of video sequences.

• 社団法人電子情報通信学会の論文
• 2007-01-01

著者

• GOTO Satoshi

  IPS, Waseda University

• IKENAGA Takeshi

  IPS, Waseda University

• Ikenaga Takeshi

  Graduate School Of Ips Waseda University

• Ikenaga Takeshi

  Ips Waseda University

• Goto Satoshi

  Ips Waseda University

• LI Shen

  IPS, Waseda University

• LI Lingfeng

  IPS, Waseda University

• ISHIWATA Shunichi

  Digital Media SoC Dept., SoC R & D Center, Toshiba Corp.

• MATSUI Masataka

  Digital Media SoC Dept., SoC R & D Center, Toshiba Corp.

• Li Shen

  Waseda Univ. Kitakyushu‐shi Jpn

• Matsui Masataka

  Digital Media Soc Dept. Soc R & D Center Toshiba Corp.

• Li Lingfeng

  Ips Waseda University

• Ishiwata Shunichi

  Digital Media Soc Dept. Soc R & D Center Toshiba Corp.

• Ikenaga Takeshi

  The Graduate School Of Information Production And Systems Waseda University

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