NDLI: On the coding gain of wavelet transforms

Content Provider	IEEE Xplore Digital Library
Author	da Silva, E.A.B. Ghanbari, M.
Copyright Year	1994
Description	Author affiliation: Dept. of Electron. Syst. Eng., Essex Univ., Colchester, UK (da Silva, E.A.B.; Ghanbari, M.)
Abstract	The coding gain of biorthogonal wavelet transforms is investigated. The influence of the regularity and number of vanishing moments of these wavelets on the coding gain is analysed. More than 80 wavelet transforms are assessed. The results show that as long as the coding gain of a wavelet transform is reasonably high, the influence of both regularity and number of vanishing moments on the coding gain is low. On the other hand, for wavelet transforms with coding gains less than 1, the coding gain decreases when the regularity decreases. It is also shown that, in some cases, the coding gain of biorthogonal wavelet transforms is larger than the theoretical maximum for orthogonal transforms, obtained with ideal filters. In addition, unlike orthogonal transforms, whose coding gain in octave decompositions is always smaller than the one obtained with uniform band decompositions with the same number of stages and filter banks, the coding gain of biorthogonal transforms in octave band decompositions can be either larger or smaller than in the uniform case.<>
Starting Page	193
Ending Page	196
File Size	349455
Page Count	4
File Format	PDF
ISBN	078031915X
DOI	10.1109/ISCAS.1994.409139
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-05-30
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wavelet transforms Discrete wavelet transforms Wavelet analysis Band pass filters Filter bank Discrete transforms Low pass filters Systems engineering and theory Continuous wavelet transforms Taylor series
Content Type	Text
Resource Type	Article

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