引用本文: | 张军,廉蔺,黄英君,等.联合二代Bandelet和Wavelet对图像进行分层压缩[J].国防科技大学学报,2007,29(5):54-59.[点击复制] |
ZHANG Jun,LIAN Lin,HUANG Yingjun,et al.Two-layered Image Compression Combining Wavelet and the Second Generation Bandelet[J].Journal of National University of Defense Technology,2007,29(5):54-59[点击复制] |
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联合二代Bandelet和Wavelet对图像进行分层压缩 |
张军, 廉蔺, 黄英君, 李国辉 |
(国防科技大学 信息系统与管理学院,湖南 长沙 410073)
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摘要: |
一幅图像可以分解为匀质结构图和几何纹理图两个分量。基于这种思想,提出了一种使用二代Bandelet和小波对图像进行分层压缩的有效算法。首先,使用全变分方法把原始图像f分解为u和v两部分,其中u代表f中的结构分量,v代表纹理分量;对u进行小波变换,对v进行二代Bandelet变换。采用了自顶向下的四叉树分解算法,优化了二代Bandelet的四叉树建立过程。实验结果表明,该压缩方法的重建图像在视觉效果和客观SSIM值两方面均优于JPEG2000和Bandelets。 |
关键词: 图像压缩 bandelet 小波 全变分 四叉树 |
DOI: |
投稿日期:2007-07-20 |
基金项目:国家部委资助项目(203010203) |
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Two-layered Image Compression Combining Wavelet and the Second Generation Bandelet |
ZHANG Jun, LIAN Lin, HUANG Yingjun, LI Guohui |
(College of Information System and Management, National Univ. of Defense Technology, Changsha 410073, China)
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Abstract: |
An image can be decomposed into two parts, uniform structural part and geometric texture part. Based on this idea, this paper proposes an efficient two-layered image compression method using the second generation Bandelets and wavelets. Firstly, an original image f is decompose into u and v , where u represents the structural part and vthe texture part, then uandvare compressed by using wavelets and the second generation Bandelets respectively. The paper adopts a top-down algorithm of quadtree segmentation, which optimizes the quadtree construction of the second generation Bandelet. Numerical experiments prove that our method outperforms Bandelets or JPEG2000 compression system in both visual effect and objective SSIM value. |
Keywords: image compression bandelet wavelet total variation quadtree |
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