Title :
Application of the Lifting Scheme to variable filter band discrete wavelet transform
Author :
Zhong Zhang ; Hosokawa, Shotaro ; Toda, Hiroaki ; Imamura, Takashi ; Miyake, Tetsuo
Author_Institution :
Toyohashi Univ. of Technol., Toyohashi, Japan
Abstract :
A variable filter band discrete wavelet transform (VFB-DWT) is a kind of discrete wavelet transform (DWT), which has variable band filter, and it can extract desired signal. However, its calculation speed becomes slower than that of the base DWT. In this study, in order to improve the calculation speed of the VFB-DWT, a complex wavelet, RI-Spline wavelet is used to base DWT by Lifting Scheme, and the VFB-DWT is achieved by added the band-pass and band-reject filters on the CDWT. As a result of numerical experimentation, it was shown that signal extraction can be performed correctly.
Keywords :
band-pass filters; band-stop filters; discrete wavelet transforms; feature extraction; splines (mathematics); CDWT; RI-spline wavelet; VFB-DWT; band-pass filter; band-reject filter; lifting scheme; signal extraction; variable filter band discrete wavelet transform; Abstracts; Boolean functions; Data structures; Discrete wavelet transforms; Lifting Scheme; RI-Spline wavelet; suitable basis; variable filter band discrete wavelet transform;
Conference_Titel :
Wavelet Analysis and Pattern Recognition (ICWAPR), 2013 International Conference on
Conference_Location :
Tianjin
Print_ISBN :
978-1-4799-0415-0
DOI :
10.1109/ICWAPR.2013.6599300
