Automatic Two-layer VOP Generation and Its Application to MPEG-4 Video Coding

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  • 二層ビデオオブジェクト自動生成法とMPEG-4符号化への適用
  • 2ソウ ビデオ オブジェクト ジドウ セイセイホウ ト MPEG-4 フゴウカ エ ノ テキヨウ

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Abstract

The new video coding standard MPEG-4 provides content-based functionality and low bit-rate video compression. We focused on the "sprite coding" supported MPEG-4 Version 1 Main profile in order to achieve "VHS quality video on 2B(128kbps)" for narrow-band transmission such as the Internet. Automatic VOP(Video Object Plane)generation technologies are being studied as one of the most important issues of MPEG-4 object coding. This paper proposes a two-layer VOP generation scheme with some core algorithms such as GME(Global Motion Estimation), foreground moving object extraction, and background sprite generation. This paper also describes a shape information reduction method for foreground objects. Using this method, shape information is compressed by 90%. Experiments are conducted on VOP generation and video coding with MPEG-4. Coding efficiency is several times higher than that of typical existing video coding schemes at the same objective image quality.

Journal

  • ITE Technical Report

    ITE Technical Report 23.80 (0), 49-54, 1999

    The Institute of Image Information and Television Engineers

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