基于人的视觉系统的小波性能评价

TP3; We have constructed a compactly supported biorthogonal wavelet that approximates the modulation transfer function (MTF) of human visual system in the frequency domain. In this paper, we evaluate performance of the constructed wavelet, and compare it with the widely used Daubechies 9-7, Daubechi...

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Bibliographic Details
Published in上海大学学报(英文版) Vol. 6; no. 3; pp. 216 - 220
Main Authors 胡海平, 莫玉龙
Format Journal Article
LanguageChinese
Published Depertment of mathematics, College of Sciences, Shanghai University, Shanghai 200436, China%School of Communication and Information Engineering, Shanghai University, Shanghai 200072, China 2002
Subjects
biorthogonal wavelet
peak-to-peak ratio
weighted subband coding gain
regularity
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ISSN1007-6417

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Summary:TP3; We have constructed a compactly supported biorthogonal wavelet that approximates the modulation transfer function (MTF) of human visual system in the frequency domain. In this paper, we evaluate performance of the constructed wavelet, and compare it with the widely used Daubechies 9-7, Daubechies 9-3 and GBCW-9-7 wavelets. The result shows that coding performance of the constructed wavelet is better than Daubechies 9-3, and is competitive with Daubechies 9-7 and GBCW-9-7 wavelets. Like Daubechies 9-3wavelet, the filter coefficients of the constructed wavelet are all dyadic fractions, and the tap is less than Daubechies 9-7 and GBCW9-7. It has an attractive feature in the realization of discrete wavelet transform.
ISSN:1007-6417