A novel variable-filter-band discrete wavelet transform

Author

Zhang, Zhong ; Toda, Hiroshi ; Imamura, Takashi ; Miyake, Testuo

Author_Institution

Toyohashi Univ. of Technol., Toyohashi, Japan

fYear

2012

fDate

15-17 July 2012

Firstpage

371

Lastpage

377

Abstract

In this study, a new variable-filter-band discrete wavelet transform (VBF-DWT) is proposed for detecting and extracting unsteady abnormal signals. The VBF-DWT is achieved by using the band pass wavelet set (BP-WS) and band rejection wavelet set (BR-WS) instead of traditional mother wavelet (MW). Corresponding to it, in the multi-resolution algorithm, the variable-band filters (VBFs) are used instead of traditional low and high pass filters. The VBFs are designed from the BP-WS and BR-WS, which is constructed from a real-signal MW.

Keywords

band-pass filters; band-stop filters; discrete wavelet transforms; set theory; signal detection; signal resolution; BP-WS; BR-WS; VBF-DWT; band-pass wavelet set; band-rejection wavelet set; multiresolution algorithm; real-signal MW; unsteady abnormal signal detection; unsteady abnormal signal extraction; variable filter-band discrete wavelet transform; Band pass filters; Discrete wavelet transforms; Filtering algorithms; Multiresolution analysis; Abnormal signal detection; Band pass wavelet set; Real signal mother wavelet; Variable band filter;

fLanguage

English

Publisher

ieee

Conference_Titel

Wavelet Analysis and Pattern Recognition (ICWAPR), 2012 International Conference on

Conference_Location

Xian

ISSN

2158-5695

Print_ISBN

978-1-4673-1534-0

Type

conf

DOI

10.1109/ICWAPR.2012.6294810

Filename

6294810