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简单双正交C9/7小波的提升构造

DOI: 10.11834/jig.20070720

Keywords: 双正交滤波器,9/7小波,消失矩,提升方法

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Abstract:

针对CDF9/7等小波的缺陷,灵活运用双正交对称滤波器的规一化和消失矩性质以及9/7小波的提升结构,构造了一组包含两个自由变量的9/7提升小波族。该小波族通过选取合适的自由变量值,得到了提升系数和滤波器系数都非常简洁,而且构造了部分系数分母为2的幂次方的C9/7系列小波,并结合滤波器理论,讨论了它们的正交性和消失矩;最后将C9/7小波与CDF9/7小波进行了对比分析,结果表明,C9/7小波在计算性能方面明显优于CDF9/7小波,而在客观质量评价和主观质量评价方面则与CDF9/7小波不相上下。

References

[1]  Cohen A,Daubechies I,Feauveau J C.Biorthogonal bases of compactly supported wavelets[J].Communication.Pure Application.Maths,1992,45(1):485~560.
[2]  Admas M D,Kossentini F.Reversible integer-to-integer wavelet transforms for image compression; Performance evaluation and analysis[J].IEEE Transactions on Image Processing,2000,9(6):1010~1024.
[3]  Zhong Guang-jun,Cheng Li-zhi,Chen Huo-wang.A simple 9/7 wavelet filter based on lifting[J].Computer Engineering & Science,2003,25(1):35 -37.[钟广军,成礼智,陈火旺.基于提升方法的简单9、7小波滤波器[J].计算机工程与科学,2003,25(1):35~37.]
[4]  Calderbank A R,Daubechies I,Sweldens W,el at.Lossless image compression using integer to integer wavelet transforms[A].In:Procesdings of IEEE Institute Conference on Image Processing(ICIP\'97)[C],Santa Barbara,CA,USA,1997:51~60.
[5]  Daubechies I,Sweldens W.Factoring wavelet transforms into lifting steps[J].Journal Fourier Annal Application,1998,4(3):245~267.
[6]  Ding Cui-guang,Guo Bao-long,Wang Yong.A kind of lifting 9-7-tap wavelet filter for hardware implementation[J].Journal of Xidian University,2003,30(5); 603~606.[丁贵广,郭宝龙,王勇.一种适于硬件实现的提升9、7小波滤波器[J].西安电子科技大学学报(自然科学版),2003,30(5):603~606.]
[7]  USC-SIPI Image Database[EB/OL].http://sipi.use.edu/database/index.html
[8]  Li Bi-cheng,Luo Jian-shu.Wavelet Analysis and Applications[M].Beijing:Publishing House of Electronics Industry,2003; 56~59.李弼程,罗建书.小波分析及其应用[M].北京:电子工业出版社,2003:56~59.]

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