brightest_island

ctapipe.image.brightest_island(n_islands, island_labels, image)

Find the brightest island and filter it from the image.

This function takes a list of islands in an image and the image itself and isolates brightest island for later parametrization.

Parameters

n_islands: int

Total number of islands, first return value of number_of_islands

island_labelsarray

Flattened array containing a list of labelled islands from a cleaned image. Second value returned by the function ‘number_of_islands’.

image: array

The image array

Returns

maskarray

A boolean mask created from the input labels and filtered for the brightest island. If no islands survived the cleaning the array is all False.