Wavelet De-Noising Method Based on a New Kind of Threshold Function

Fang Liu; Qi Xie; Wei Ge Liang; Wei Yi Chen

doi:10.4028/www.scientific.net/AMM.519-520.1057

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 519-520Wavelet De-Noising Method Based on a New Kind of...

Wavelet De-Noising Method Based on a New Kind of Threshold Function

Abstract:

Based on wavelet threshold de-noising method which put forward by Donoho, we analyze and compare the advantages and disadvantages of hard threshold, soft threshold and some improved threshold methods. Based on polynomial interpolation method, a new threshold function is proposed, which is continuous in the whole threshold area, with little constant deviation between the estimated wavelet coefficients and original signal wavelet coefficient, and high-order derivative and easy processing. The simulation results show that this method can give better optical effect, SNR gains and MSE performance.

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Periodical:

Applied Mechanics and Materials (Volumes 519-520)

Pages:

1057-1060

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.519-520.1057

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Online since:

February 2014

Authors:

Fang Liu*, Qi Xie, Wei Ge Liang, Wei Yi Chen

Keywords:

De-Noise, MSE, SNR, Threshold Function, Wavelet Transform (WT)

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* - Corresponding Author

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