A Study on Improved Coding Method of RUN in VLC of DCT for Video Coding

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Other Title
  • 映像符号化におけるDCT係数ラン情報符号化改良の一検討(マルチメディア通信とQoS, VoIP, ストリーミング, 一般)
  • 映像符号化におけるDCT係数ラン情報符号化改良の一検討
  • エイゾウ フゴウカ ニ オケル DCT ケイスウ ラン ジョウホウ フゴウカ カイリョウ ノ イチ ケントウ

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Abstract

In H.263 video coding method, 2 dimensional DCT coefficients are zigzag scanned, and entropy coded with 3DVLC using RUN and LEVEL information. The zigzag scanning has the problem that the correlation between two coefficients dependent on the positions in 2 dimensional matrix originally. This paper proposes the coding method of DCT coefficients, which is adaptively changed depending on the positions of coefficients in 2 dimensional matrix, and demonstrates its efficiency by computer simulation results.

Journal

  • ITE Technical Report

    ITE Technical Report 26.48 (0), 13-18, 2002

    The Institute of Image Information and Television Engineers

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