Re: Measure over a thershold without ROI

Posted by Wayne Rasband on Apr 21, 2009; 9:38pm
URL: http://imagej.273.s1.nabble.com/Measure-over-a-thershold-without-ROI-tp3692831p3692832.html

> Hello,
>
> I was wondering if there was a function that alows to do intensity
> measurments and statistics on a whole image but that would skip all the
> pixels in that image that are below a threshold (in my case skip all
> the
> pixel with a value of  0) ?
> ( I don't want/ can't create ROIs))

   1. Set the threshold to 1-255 in Image>Adjust>Threshold
   2. Enable "Limit to Threshold" in Analyze>Set Measurements
   3. Press "m" (Analyze>Measure)

No ROIs are required. This assumes an 8-bit image.

-wayne