Left panel: segmentation maps resulting from the SPoCA algorithm applied on SWAP 17.4 nm image. The solid grey line indicates the segmented AR. The dotted grey line indicates the segmented CH. Right panel: photospheric magnetic features are identified in the HMI magnetogram using the SPoCA segmentation maps. The grey lines indicate the segmented features projected onto the magnetogram. The yellow line indicates the extended AR area. The temporal evolution over one month is shown by a movie available online.