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  • 标题:動き補償予測誤差画像に対するサブバンドMatching Pursuits符号化
  • 本地全文:下载
  • 作者:今村 幸祐 ; 石崎 智範 ; 橋本 秀雄
  • 期刊名称:映像情報メディア学会誌
  • 印刷版ISSN:1342-6907
  • 电子版ISSN:1881-6908
  • 出版年度:2004
  • 卷号:58
  • 期号:4
  • 页码:580-583
  • DOI:10.3169/itej.58.580
  • 出版社:The Institute of Image Information and Television Engineers
  • 摘要:Most recent video coding methods like MPEG, are types of hybrid coding that use motion compensation (MC) and discrete cosine transform (DCT). In DCT, because images are partitioned into macro blocks, the efficiency decreases for a very low bitrate. We propose a new video coding method that uses matching pursuits (MP). MP represents a signal approximately by using a dictionary to obtain a high coding efficiency for a very low bitrate. In this paper, we propose a matching pursuits coding method that uses a dictionary suitable for the sub-band frequency characteristic for motion compensated prediction error images, and will demonstrate how this method can improve coding efficiency.
  • 关键词:Matching Pursuits;動き補償予測;サブバンド分割
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