<< HybridThresh Tools for DeNoising Signals with White Gaussian Noise InvShrink >>

Wavelab Toolbox >> Wavelab Toolbox > Tools for DeNoising Signals with White Gaussian Noise > IdealWavDenoise

IdealWavDenoise

Simulation of an Ideal Thresholding Applied to Wavelet Coefficients.

Calling Sequence

[out,wcoef,wcoefrest] = IdealWavDenoise(Orig,Noisy,L,qmf,sigma)

Parameters

Inputs:

Orig :

1-d original Signal (length= 2^J).

Noisy :

1-d noisy signal.

L :

Low-Frequency cutoff for shrinkage (e.g. L=4) Should have L << J!

qmf :

Quadrature Mirror Filter for Wavelet Transform Optional, Default = Symmlet 8.

sigma :

Standard deviation of additive Gaussian White Noise.

Outputs :

out :

estimate, obtained by applying hard thresholding on wavelet coefficients

wcoef:

Wavelet Transform of input signal

wcoefrest :

Wavelet Transform of estimate

Authors

<< HybridThresh Tools for DeNoising Signals with White Gaussian Noise InvShrink >>