karo_rats
Arguments:
Description:
'R'obust 'a'utomatic 't'hreshold 's'election (Kittler et al. 1985)
Input image (not histogram similar otsu!)
Default values:
pow=0.5
Example of use:
$ gmic osteo +karo_rats

Command: osteo +karo_rats

Command: osteo +karo_rats