Naslov
Wavelet filter banks with adaptive number of zero moments

Autori
Seršić, Damir

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
2000 5th International Conference on Signal Processing Proceedings WCC2000 - ICSP2000 / Baozong Y., Xiaofang T. - Peking : IEEE Press, Publishing House of Electronic Industry, 2000, Vol. I, pp. 325-328

Skup
2000 5th International Conference on Signal Processing Proceedings / World Computer Congress 2000

Mjesto i datum
Peking, Kina, 21.08.2000. - 25.08.2000

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
adaptive zero moments; time varying filter banks; wavelets

Sažetak
In this paper, an efficient realization of two-channel wavelet filter bank with adaptive number of zero moments is proposed. Described time variant wavelet filter bank is more suitable for analysis of non-stationary signals then fixed banks. Filters with more zero moments result in better representation of smooth parts of the analyzed signal, while less zero moments is better for transients and singularities. Proposed realization is based on the lifting scheme, derived from a method of fixed wavelet filter bank design, using Lagrange interpolation of samples in time domain. Adaptation criterion is calculated from wavelet coefficients, which is under some restrictions reproducible on the reconstruction side. Wavelet filter banks with adaptive number of zero moments outperforms fixed banks in a number of applications.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA