| 摘要: |
| 本文主要从小波系数的合理组织、对重要系数的量化；以及新型小波滤波器的构造三个方面分析了基于零树小波编码的改进算法。理论分析和实验验证表明，它们在压缩比、编码速度及硬件实现方面均有较好的效果。本文对这些算法从原理到性能进行了比较和讨论，说明了基于零树小波图像编码的研究方向。 |
| 关键词: 零树小波 小波滤波器 图像编码 小波系数 硬件实现 编码速度 改进算法 量化 性能 压缩比 |
| DOI：10.3969/j.issn.1001-893X. |
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| 基金项目:西安石油大学科技创新基金项目(2004-35) |
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| Improved Algorithms Based on Zerotree Wavelets Coding |
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| Abstract: |
| In this paper,three improved algorithms based on zerotree wavelets coding are provided. They are wavelet coefficients organizing in reason, discrete measure on important coefficients and new pattern wavelet filter constructing . By theory analysis and practical engineering validating , the improved algorithms are proved to be able to achieve good effect in compression rate ,coding speed and hardware realization.The principles and performances of these algorithms are discussed, the research tendency in the field of wavelet image coding is explained. |
| Key words: Image coding,Zerotree,Wavelet transform,Algorithm |
