Source

pywt / doc / source / ref / swt-stationary-wavelet-transform.rst

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Stationary Wavelet Transform

Stationary Wavelet Transform (SWT), also known as Undecimated wavelet transform or Algorithme à trous is a translation-invariance modification of the Discrete Wavelet Transform that does not decimate coefficients at every transformation level.

Multilevel swt

Multilevel swt2

Maximum decomposition level - swt_max_level