Ambiguous parameters

[XUYIRS]

Hello,

In the function crown_delineation(), there are 3 parameters as following:
th_seed : factor 1 for minimum height of tree crown
th_crown : factor 2 for minimum height of tree crown
th_tree : minimum height of tree seed (in m)
I wonder the meaning and function of each parameter and the difference between these three parameters, so that we can further tune them to a suitable extent according to our dataset.

Best regards