Fig. 2
From: Coarse-graining and the Haar wavelet transform for multiscale analysis
An example of a segment of an EEG time series is shown. Scales obtained by coarse-graining are shown in column 1. Haar wavelet transform approximations (column 2) and details (column 3) are also shown for equivalent levels. The horizontal axes represent points in the time series, the vertical axis is the magnitude of the field. Haar wavelet approximation levels are identical to power-of-two scales obtained by coarse-graining. The coarse-graining procedure does not have an equivalent to the wavelet details