WEKO3
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Flexible Zerotree Coding of Wavelet Coefficients
http://hdl.handle.net/10191/6215
http://hdl.handle.net/10191/6215221f6f6f-d3d2-4d39-88c3-a74177327acf
名前 / ファイル | ライセンス | アクション |
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1_0021.pdf (1.7 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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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× Kikuchi, Hisakazu× Sasaki, Shigenobu× Shin, Jaeho |
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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 |
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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/ |