How to get the area of bare surface

Posted by Steven Liu on
URL: http://imagej.273.s1.nabble.com/How-to-get-the-area-of-bare-surface-tp5021792.html

Hi,
Happy Valentine's Day!

I have an SEM image. There are network type particles on a substrate.
I want to calculate the area of bare substrate or particles.
I tried many ways to analyze it, but failed to get good segment.
Could anyone help me?
Thanks!

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