karo_doc
Arguments:
- _size>0,_shape=0|1|2 (square|octagonal|circular),
Description:
_channel see color_channels in
apply_channels
compute difference of open+close and original (only 2d)
Default values:
size=5, shape=1, channel=0
Example of use:
$ gmic sp tiger +karo_doc 15,2,5 replace. 0,{im}

Command: sp tiger +karo_doc 15,2,5 replace. 0,{im}

Command: sp tiger +karo_doc 15,2,5 replace. 0,{im}