number_of_island_sizes#
- ctapipe.image.number_of_island_sizes(island_labels)[source]#
 Return number of small, medium and large islands
- Parameters:
 - island_labels: array[int]
 Array with island labels, (second return value of
number_of_islands)
- Returns:
 - n_small: int
 number of islands with less than 3 pixels
- n_medium: int
 number of islands with 3 <= n_pixels <= 50
- n_large: int
 number of islands with more than 50 pixels