| 基于小波变换的数字视频多分辨率编/解码及图像轮廓识别 |
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| 引用本文： | 郭玉英,朱正为. 基于小波变换的数字视频多分辨率编/解码及图像轮廓识别[J]. 兵工自动化, 2005, 24(5): 85-86 |
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| 作者姓名： | 郭玉英 朱正为 |
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| 作者单位： | 西南科技大学,信息工程学院,四川,绵阳,621010;西南科技大学,信息工程学院,四川,绵阳,621010 |
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| 基金项目： | 西南科技大学校科研和教改项目 |
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| 摘 要： | 基于小波变换和Mallat算法的数字视频编/解码及图像轮廓识别,编码端用小波变换将二维图像信号子带分解成1个低频分量和3个高频分量,并结合可编程量化和Huffman编码获得较大压缩比信号的数据比特流,实现数字视频编码.在接收端,用小波逆变换对4个子带信号重构,恢复出原始二维图像信号,实现视频解码.用小波变换的分辨率特性和二维子带谱分析法实现图像轮廓识别.
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| 关 键 词： | 小波变换 Mallat算法 数字视频编/解码 子带谱分析 图像轮廓识别 |
| 文章编号： | 1006-1576（2005）05-0085-02 |
| 收稿时间： | 2005-03-21 |
| 修稿时间： | 2005-05-21 |
Digital Video Coding/Decoding and Image Outline Identification Based on Wavelet Transform |
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| GUO Yu-ying,ZHU Zheng-wei. Digital Video Coding/Decoding and Image Outline Identification Based on Wavelet Transform[J]. Ordnance Industry Automation, 2005, 24(5): 85-86 |
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| Authors: | GUO Yu-ying ZHU Zheng-wei |
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| Abstract: | For digital video coding/decoding and image outline identification based on wavelet transform, first, in the coding-side, two-dimensional (2-D) image signal sub-band was decomposed into one low-frequency sub-band and three high-frequency sub-bands by using wavelet transform (WT), and the high-compressed signal data bit-stream was acquired through united programmable quantification and Huffman coding to realize video coding. At receiving-side, four sub-bands were reconstructed with wavelet inverse transform and original 2-D image signal was comeback to realize digital video decoding. Image outline identification was realized with resolution characteristics of WT and 2-D sub-band spectrum analysis. |
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| Keywords: | Wavelet transform (WT) Mallat algorithm Digital video coding and decoding Sub-band spectrum analysis Image outline identification |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
