Title :
Wavelet packet de-noising based on several thresholds
Author :
Xiaoxia Guo ; Huizhong Yang
Author_Institution :
Sch. of Commun.&Control Eng., Jiangnan Univ., Wuxi
Abstract :
Several thresholds were used in wavelet packet shrinkage, and according to the feature that the wavelet coefficients of signals and noises on each scale had different characteristic, SURE threshold, Bayesian threshold, fixed form threshold and the moving minimax threshold were combined during wavelet packet threshold de-noising. Simulation results show that the proposed method indeed has better de-noising effect.
Keywords :
Bayes methods; minimax techniques; signal denoising; wavelet transforms; Bayesian threshold; SURE threshold; fixed form threshold; moving minimax threshold; wavelet packet shrinkage; wavelet packet threshold denoising; wavelet signal coefficient; Bayesian methods; Communication system control; Control engineering; Minimax techniques; Noise reduction; Wavelet analysis; Wavelet coefficients; Wavelet domain; Wavelet packets; Wavelet transforms; RMSE; SNR; Threshold de-noising; Wavelet packet analysis; bayesian threshold;
Conference_Titel :
Control Conference, 2008. CCC 2008. 27th Chinese
Conference_Location :
Kunming
Print_ISBN :
978-7-900719-70-6
Electronic_ISBN :
978-7-900719-70-6
DOI :
10.1109/CHICC.2008.4604981
