| 基于小波变换的图像压缩感知 |
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| 引用本文： | 袁泉,张骋,陈建军,姚君霞,李颖冉,王欢.基于小波变换的图像压缩感知[J].计算机工程,2012,38(20):209-211. |
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| 作者姓名： | 袁泉 张骋 陈建军 姚君霞 李颖冉 王欢 |
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| 作者单位： | 1. 重庆邮电大学重庆信科设计有限公司,重庆,401121
2. 重庆大学通信工程学院,重庆,400044 |
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| 基金项目： | 重庆市自然科学基金资助项目(2009BB2359);中央高校基本科研业务费基金资助项目(CDJRC10160004) |
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| 摘 要： | 针对图像变换后系数采样数量和图像重建质量之间的矛盾,从图像的结构和纹理特性出发,提出基于小波变换的图像压缩感知算法.讨论图像经过多尺度小波变换后系数的稀疏性,保留图像变换后的低频系数,只对高频系数进行测量,同时利用正交匹配追踪算法重构高频系数.实验仿真结果表明,该算法能有效提高图像重建质量.
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| 关 键 词： | 压缩感知 小波变换 多尺度 正交 采样 |
| 收稿时间： | 2011-11-22 |
| 修稿时间： | 2012-01-19 |
Image Compressed Sensing Based on Wavelet Transform |
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| YUAN Quan
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ZHANG Cheng
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CHEN Jian-jun
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YAO Jun-xia
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LI Ying-ran
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WANG Huan.Image Compressed Sensing Based on Wavelet Transform[J].Computer Engineering,2012,38(20):209-211. |
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| Authors: | YUAN Quan ZHANG Cheng CHEN Jian-jun YAO Jun-xia LI Ying-ran WANG Huan |
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| Affiliation: | 1.Chongqing Information Technology Designing Co.,Ltd.,Chongqing University of Posts and Telecommunications,Chongqing 401121,China;2.College of Communications Engineering,Chongqing University,Chongqing 400044,China) |
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| Abstract: | Aiming at the contradiction between the quality of image reconstruction and the quantity of coefficient sampling,the Compress Sensing(CS) algorithm based on the wavelet transform is proposed in this paper.It discusses the sparsity of image coefficient after multi-scale transform.The high-pass wavelet coefficients of the image are measured and the low-pass wavelet coefficients are preserved.The Orthogonal Matching Pursuit(OMP) algorithm is used for reconstruction of compress sensing.Simulation result demonstrates that the proposed algorithm can improve the quality of the recovered image significantly. |
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| Keywords: | Compressed Sensing(CS) wavelet transform multi-scale orthogonality sampling |
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