| 基于小波和匹配跟踪的分层图像编码算法 |
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| 引用本文： | 刘利雄,廖斌,贾云得,王元全. 基于小波和匹配跟踪的分层图像编码算法[J]. 北京理工大学学报, 2007, 27(10): 891-895 |
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| 作者姓名： | 刘利雄 廖斌 贾云得 王元全 |
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| 作者单位： | 北京理工大学,计算机科学技术学院,北京,100081;华北电力大学,电气与电子工程学院,北京,102206 |
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| 基金项目： | 国家自然科学基金资助项目(60473049,60602050) |
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| 摘 要： | 提出了一种基于小波和匹配跟踪的分层图像编码算法. 该算法将原始图像划分成包含不同结构特征的平滑边缘层和纹理层,采用不同的压缩算法对不同的图像层进行编码,从而达到对整幅图像最优编码的目的. 实验结果表明,该算法不仅能够有效地捕捉图像中所包含的边缘和纹理等具有高频窄带的信号特征,而且在极低位率下的重建图像质量要优于单一小波图像编码算法.
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| 关 键 词： | 小波变换 分层图像 图像编码 匹配跟踪 纹理编码 |
| 文章编号： | 1001-0645（2007）10-0891-05 |
| 收稿时间： | 2007-06-28 |
| 修稿时间： | 2007-06-28 |
Multi-Layered Image Coding Based on Wavelet and Matching Pursuit Transforms |
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| LIU Li-xiong,LIAO Bin,JIA Yun-de and WANG Yuan-quan. Multi-Layered Image Coding Based on Wavelet and Matching Pursuit Transforms[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2007, 27(10): 891-895 |
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| Authors: | LIU Li-xiong LIAO Bin JIA Yun-de WANG Yuan-quan |
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| Affiliation: | 1. School of Computer Science and Technology, Beijing Institute of Technology, Beijing 100081, China; 2. School of Electric and Electronic Engineering, North China Electric Power University, Beijing 102206, China |
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| Abstract: | Proposes a new multi-layered image coding algorithm based on wavelet and matching pursuit transforms.The original image is divided into smooth edge layer and texture layer,and in each layer different compression algorithms are adopted for coding.As a result,the aim of coding whole image can be achieved optimally.Experiments showed that it can capture texture and edge characteristics efficiently and the quality of reconstructed image is better than traditional single wavelet image coding algorithm at low bit rates. |
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| Keywords: | wavelet transform multi-layer image image coding matching pursuit texture coding |
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