number_of_islands¶
-
ctapipe.image.
number_of_islands
(geom, mask)[source]¶ Search a given pixel mask for connected clusters. This can be used to seperate between gamma and hadronic showers.
- Parameters
- geom: `~ctapipe.instrument.CameraGeometry`
Camera geometry information
- mask: ndarray
input mask (array of booleans)
- Returns
- n_islands: int
Total number of clusters
- island_labels: ndarray
Contains cluster membership of each pixel. Dimension equals input geometry. Entries range from 0 (not in the pixel mask) to n_islands.