How to count the number of pixels over certain grayscale value in a ROI?

Posted by Jiseok on
URL: http://imagej.273.s1.nabble.com/How-to-count-the-number-of-pixels-over-certain-grayscale-value-in-a-ROI-tp5020254.html

Hi, I am trying to count the number of pixels in a ROI which have grayscale
value over a certain threshold (for example, if the range is 0-255, count
the number of pixels with values over 30). Is there a simple way to do this?
I don't know how to write or edit plugins or macros...

Thank you.



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