<< HT Tools for DeNoising Signals with White Gaussian Noise HardThresh >>

Wavelab Toolbox >> Wavelab Toolbox > Tools for DeNoising Signals with White Gaussian Noise > HT2

HT2

Hard Threshold Applied to Image Wavelet Coefficients.

Calling Sequence

out = HT2(Noisy,L,qmf,sigma)

Parameters

Inputs:

Noisy:

2-d 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.

thresh :

Threshold to apply on the wavelet coefficients

Outputs :

out :

estimate, obtained by applying hard thresholding on wavelet coefficients

Authors

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