基于二叉树搜索的小波变换信号压缩
正交离散小波变换由于缺乏平移不变性，会对信号压缩的性能造成很大的影响。为避免这一缺陷，该文在每个变换尺度上均对偶采样和奇采样的结果进行保留，产生一个二叉树结构，由此二叉树的任意一路径均可重构原信号，按照一定的准则可以确定最优分解路线，仿真结果表明，该变换方式较标准正交离散小波变换有更高的压缩性能。...
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| Veröffentlicht in: | Dian zi yu xin xi xue bao = Journal of electronics & information technology 2002, Vol.24 (5), p.615-620 |
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| container_title | Dian zi yu xin xi xue bao = Journal of electronics & information technology |
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| creator | 张磊 潘泉 等 |
| description | 正交离散小波变换由于缺乏平移不变性，会对信号压缩的性能造成很大的影响。为避免这一缺陷，该文在每个变换尺度上均对偶采样和奇采样的结果进行保留，产生一个二叉树结构，由此二叉树的任意一路径均可重构原信号，按照一定的准则可以确定最优分解路线，仿真结果表明，该变换方式较标准正交离散小波变换有更高的压缩性能。 |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 1009-5896 |
| ispartof | Dian zi yu xin xi xue bao = Journal of electronics & information technology, 2002, Vol.24 (5), p.615-620 |
| issn | 1009-5896 |
| language | chi |
| recordid | cdi_wanfang_journals_dzkxxk200205007 |
| source | Alma/SFX Local Collection |
| subjects | 二叉树搜索 信号压缩 小波变换 |
| title | 基于二叉树搜索的小波变换信号压缩 |
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