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一种新的全相位Contourlet离散变换在?图像去噪中的应用

DOI: 10.11834/jig.20080505

Keywords: 全相位Contourlet,方向性滤波,子带分解,内插

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Abstract:

为了实现更为优秀的利用Contourlet来实现的图像去噪,以MATLAB为仿真工具,提出了一种新的全相位Contourlet离散变换,其多级分解和重构继承了已有的基于全相位DCT(APDCT)子带滤波和全相位IDCT(APIDCT)内插的全相位Contourlet,其方向滤波则是采用一种基于DCT的全相位方向滤波器组(APDFB)。APDFB具有良好的方向选择性,而且重构算法简单,只要将各个方向图像直接相加即可。实验结果表明,将新的全相位Contourlet离散变换应用在图像去噪中,与原Contourlet相比,在信噪比有所提高的同时,图像视觉效果也更好。

References

[1]  Do M N,Vetterli M.The contourlet transform:an efficient directional multiresolution image representation[J].IEEE Transactions on Image Processing,2005,14(12):2091~2106.
[2]  Cohen A,Matei B.Compact representation of images by edge adapted muhiscale transforms[A].In:Proceedings of IEEE International Conference on Image Processing,Special Session on Image Processing and Non-Linear Approximation[C],Thessaloniki,Greece,2001,1:8~11.
[3]  Wakin M B,Romberg J K,Choi H,et al.Rate-distortion optimized image compression using wedgelets[A].In:Proceedings of IEEE International Conference on Image Processing[C],Rochester,New York,2002.3:237~240.
[4]  Shukla R,Dragotti P L,Do M N,et al.Bate-distortion optimized treestructured compression algorithms for piecewise polynomial images[J].IEEE Transactions on Image Processing,2005,14(3):343~359.
[5]  Hou Zheng-xin,Guo Ying-chun.Sequency subband feature ceding on 2-D APDCSF[J].Journal of Opteelectronics?Laser.2005,16(9):1112~1117.[侯正信,郭迎春.基于二维APDCSF的列率子带特征编码方法[J].光电子?激光,2005,16(9):1112~1117.]
[6]  Pennec E L,Mallat S.Image compression with geometrical wavelets[A].In:Proceedings of IEEE International Conference on Image Processing[C],Vancouver,Canada,2000:661~664.
[7]  Donoho D L.Wedgelets:nearly-minimax estimation of edges[J].Annals of Statistics,1999,27(3):859~897.
[8]  Dragotti P L.Vetterli M.FootpHnts and edgeprints for image denoising and compression[A].In:Proceedings of IEEE Intemational Conference on Image Processing[C],Thessaloniki,Greece,2001,2:237~240.
[9]  Guo Xu-jing,Hou Zheng-xin.Application of the all phase Contourlet on image denoising[J].Journal of Tianjin University,2006,39(7):832~836.[郭旭静,侯正信.全相位Contourlet在图像去噪上的应用[J].天津大学学报,2006,39(7):832~836.]
[10]  Guo Ying-chun,Hou Zheng-xin.True 2-D wavelet filter bank and its application for image compression[J].Journal of Optoelectronics.Laser,2005,16(8):982~988.[郭迎春,侯正信.纯二维小波滤波器组及其在图像压缩中的应用[J].光电子?激光,2005,16(8):982~988.]
[11]  Hou Zheng-xin,Wang Zhao-hua,Yang Xi.Design and implementation of all phase DFT digital fdter[J].Acts Electronica Sinica,2003.31(4):539~543.[侯正信,王兆华,杨喜.全相位DFT数字滤波器的设计与实现[J].电子学报,2003,31(4):539~543.

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