Automatically found threshold class.

A threshold found automatically via auto_thresh(). It is a number (the value of the threshold) with 4 attributes:

ignore_white is TRUE if white values were ignored during the thresholding and FALSE otherwise.
ignore_na is TRUE if NAs were ignored during the thresholding and FALSE otherwise.
autothresh_method details which automatic thresholding method was used.

th(thresh, ignore_black, ignore_white, ignore_na, autothresh_method)

Arguments

thresh	A scalar. The threshold.
ignore_black	`TRUE` if black values were ignored during the thresholding and `FALSE` otherwise.
ignore_white	`TRUE` if white values were ignored during the thresholding and `FALSE` otherwise.
ignore_na	`TRUE` if `NA` values were ignored during the thresholding and `FALSE` otherwise.
autothresh_method	The name of the automatic thresholding method used.

An object of class th.