| 基于小波变换的方块效应去除法 |
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| 引用本文： | 陈琍,朱秋煜,杜干. 基于小波变换的方块效应去除法[J]. 微计算机信息, 2007, 23(24): 283-284,267 |
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| 作者姓名： | 陈琍 朱秋煜 杜干 |
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| 作者单位： | 上海大学通信与信息工程学院,上海,200072 |
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| 基金项目： | 上海市重点学科建设项目;教育部留学回国人员科研启动基金 |
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| 摘 要： | 低比特率JPEG压缩图像会产生严重方块效应，即马赛克现象，后处理技术可以有效地减少该效应。针对压缩图像在小波域中有结构信息和块不连续性的不同表现，提出了一种基于小波变换的分析方法，对图像在小波域中的不同响应分别加以处理。该算法根据小波系数在不同范围内的不同特性对图像进行区域分类，进而对不同区域做出不同的处理。试验结果表明，该方法能有效地减少方块效应，提高解码端图像的视觉质量。
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| 关 键 词： | 小波变换 方块效应 后处理 |
| 文章编号： | 1008-0570（2007）08-3-0283-02 |
| 修稿时间： | 2007-06-032007-07-05 |
Method for Removal of Blocking Artifacts Based on Wavelet Transform |
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| CHEN LI,ZHU QIUYU,DU GAN. Method for Removal of Blocking Artifacts Based on Wavelet Transform[J]. Control & Automation, 2007, 23(24): 283-284,267 |
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| Authors: | CHEN LI ZHU QIUYU DU GAN |
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| Affiliation: | School of communication and information engineering, Shanghai University, Shanghai, 200072,China |
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| Abstract: | Low bit rate JPEG compressed images present serious blocking artifacts which can be reduced by post processing. In this paper,a method for removal of blocking artifacts based on wavelet transform is proposed. The analysis is based on the different re-sponses of block boundaries (constrained by quantization),and the structural information about an image in wavelet domain. Experi-mental results show that the proposed method can significantly reduce blocking artifacts and improve visual quality. |
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| Keywords: | wavelet transform blocking artifact post processing |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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