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  1. 060 工学部
  2. 10 学術雑誌論文
  3. 10 査読済論文
  1. 0 資料タイプ別
  2. 01 学術雑誌論文

Flexible Zerotree Coding of Wavelet Coefficients

http://hdl.handle.net/10191/6215
http://hdl.handle.net/10191/6215
221f6f6f-d3d2-4d39-88c3-a74177327acf
名前 / ファイル ライセンス アクション
1_0021.pdf 1_0021.pdf (1.7 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2008-04-08
タイトル
タイトル Flexible Zerotree Coding of Wavelet Coefficients
タイトル
言語 en
タイトル Flexible Zerotree Coding of Wavelet Coefficients
言語
言語 eng
キーワード
主題Scheme Other
主題 image compression
キーワード
主題Scheme Other
主題 wavelet transform
キーワード
主題Scheme Other
主題 zerotree coding
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
著者 Joo, Sanghyun

× Joo, Sanghyun

WEKO 6121

Joo, Sanghyun

Search repository
Kikuchi, Hisakazu

× Kikuchi, Hisakazu

WEKO 6122

Kikuchi, Hisakazu

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Sasaki, Shigenobu

× Sasaki, Shigenobu

WEKO 6123

Sasaki, Shigenobu

Search repository
Shin, Jaeho

× Shin, Jaeho

WEKO 6124

Shin, Jaeho

Search repository
著者別名
識別子 6125
識別子Scheme WEKO
姓名 菊池, 久和
著者別名
識別子 6126
識別子Scheme WEKO
姓名 佐々木, 重信
抄録
内容記述タイプ Abstract
内容記述 We introduce an extended EZW coder that uses flexible zerotree coding of wavelet coefficients. A flexible parent-child relationship is defined so as to exploit spatial dependencies within a subband as well as hierarchical dependencies among multi-scale subbands. The new relationship is based on a particular statistics that a large coefficient is more likely to have large coefficients in its neighborhood in terms of space and scale. In the flexible relationship, a parent coefficient in a subband relates to four child coefficients in the next finer subband in the same orientation. If each of the children is larger than a given threshold, the parent extends its parentship to the neighbors close to its conventional children. A probing bit is introduced to indicate whether a significant parent has significant children to be scanned. This enables us to avoid excessive scan of insignificant coefficients. Also, produced symbols are re-symbolized into simple variable-length binary codes to remove some redundancy ac cording to a pre-defined rule. As a result, the wavelet coefficients can be described with a small number of binary symbols. This binary symbol stream gives a competitive performance without an additional entropy coding and thus a fast encoding/decoding is possible. Moreover, the binary symbols can be more compressed by an adaptive arithmetic coding. Our experimental results are given in both binary-coded mode and arithmetic-coded mode. Also, these results are compared with those of the EZW coder.
書誌情報 IEICE transactions on fundamentals of electronics, communications and computer sciences
en : IEICE transactions on fundamentals of electronics, communications and computer sciences

巻 E82-A, 号 6, p. 1117-1125, 発行日 1999-06
出版者
出版者 The Institute of Electronics, Information and Communication Engineers
ISSN
収録物識別子タイプ ISSN
収録物識別子 09168508
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA10826239
権利
権利情報 copyright©1999 IEICE(許諾番号07RB0183)
著者版フラグ
値 publisher
異版である
関連タイプ isVersionOf
識別子タイプ URI
関連識別子 http://www.ieice.org/jpn/trans_online/
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