These are chat archives for fiji/fiji

11th
Feb 2019
Bushra Usmani
@BushraUsmani7_twitter
Feb 11 18:20

Hi all!

I am trying to analyze the area colored white within a circle with the rest
colored black.

I draw a circle of specified measurements, clear outside and set the
threshold to make the selection but the selection keeps selecting the white
background with the white area within the circle. How could I only measure
the white area in the circle I drew, please?
Thanks!

Curtis Rueden
@ctrueden
Feb 11 19:38
@BushraUsmani7_twitter Could you please try asking on https://forum.image.sc ? I’m not sure I understand your problem (including a picture on the forum post would be nice), but maybe it’s a light/dark/black/white issue? See “Dark background” checkbox of threshold dialog, and “Black background” option of Process > Binary > Options...
Bushra Usmani
@BushraUsmani7_twitter
Feb 11 21:09
@ctrueden
Thanks Curtis!
I found a way by using 'subtract the background' option. Thanks again!
Curtis Rueden
@ctrueden
Feb 11 21:28
:+1: