ImageJ: Particle size by using intersect line?

Dear all,

There are several ways to get the particle size. But I want to try “intersect line method”. I know how to get the “Plot Profile”. However, I do not know how to get the particle size automatically. Imaging I have many images, it will be convenient to apply Macros.

Is there available Macros for use? I failed to find one.

Could anyone help me?

I attached one example image.


I don’t quite understand what this particular method is. Once you get the plot profile, how do you calculate the particle size?

Hi, Andrew,
Thanks for your attention.
First we draw a line, then get plot profile. Particles have different gray values with the substrate in the plot profile. We can calculate the size manually one by one.
I wonder if there is a code or function in ImageJ can do it automatically.

So you are calculating the size by the distance between discontinuities in the profile? If so, you might want to take a look at this thread.