| 一种扩展的嵌入零树小波算法 |
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| 引用本文： | 刘洞波. 一种扩展的嵌入零树小波算法[J]. 现代计算机, 2006, 41(9): 95-97 |
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| 作者姓名： | 刘洞波 |
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| 作者单位： | 湖南工程学院计算机科学与技术系,湘潭411104 |
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| 摘 要： | 首先采用阶梯型量化方法对小波系数进行减少孤独零符号的预处理,然后将嵌入零树小波算法进行了小波系数符号流的扩展从而提高了算法的扫描效率.实验表明,与嵌入零树小波算法相比,提高了算法的压缩比和快速性.
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| 关 键 词： | 图像压缩 小波变换 嵌入零树小波 逐次逼近量化 |
| 收稿时间： | 2006-06-12 |
| 修稿时间： | 2006-06-12 |
The Study on the Scalable Algorithms of Embedded Zerotree Wavelets |
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| LIU Dong-bo. The Study on the Scalable Algorithms of Embedded Zerotree Wavelets[J]. Modem Computer, 2006, 41(9): 95-97 |
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| Authors: | LIU Dong-bo |
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| Affiliation: | Department of Computer, Hunan Institute of Engineering, Xiangtan 411104 China |
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| Abstract: | Firstly, the scalar quantization method is adopted in order to reduce the number of isolated zeros of EZW (embedded zerotree Wavelets Encoding) algorithm. Secondly, the symbol stream of the wavelet coefficient is scaled to improve efficiency of scanning zerotree. The experiments results show that the scalable zerotree wavelets coding algorithm improves the performance and the rapidity of compression algorithm based on EZW. |
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| Keywords: | Image Compression Wavelet Transform EZW SAQ |
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