Denoises a Gaussian contaminated vector using translation-invariant hard wavelet thresholding with the universal threshold. Requires WaveThresh3. Also see help to wd, threshold, convert and AvBasis in WaveThresh.
Takes:
x | The noisy vector, its length must be a power of 2. |
filter.number | The filter number of the analysing wavelet. Can be set to 1, 2, ..., 10 for family == "DaubExPhase", or to 4, 5, ..., 10 for family == "DaubLeAsymm". |
family | The family of wavelet bases from which the wavelet filter.number is chosen. Can be set to "DaubExPhase" or "DaubLeAsymm". |
min.level | The minimum level thresholded. |
noise.level | Standard deviation of the noise, can be set to a positive number or to an estimate (a function of x). |
Returns:
est | Denoised version of x. |