Table 1.

Labels and components of the PM methods detailed in Sections 2.2.1, 2.2.2, 2.2.3.

Label	Phase map	Rotor detection	Clustering
PM1	Sawtooth	2D convolution	DBSCAN
PM2	Hilbert transform	2D convolution	DBSCAN
PM3	Hilbert transform	Double loop	No clustering