number_of_islands#
- ctapipe.image.number_of_islands(geom, mask)[source]#
Search a given pixel mask for connected clusters. This can be used to separate between gamma and hadronic showers.
- Parameters:
- geom
CameraGeometry Camera geometry information, needs to be the full camrea geometry, not already masked with
mask- maskndarray
input mask (array of booleans) of pixels surviving the cleaning
- geom
- Returns:
- n_islandsint
Total number of clusters
- island_labelsndarray
Contains cluster membership of each pixel. Dimension equals input geometry. Entries range from 0 (not in the pixel mask) to n_islands.