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Message-ID:  <[log in to unmask]>
Date:         Tue, 26 Nov 2002 10:01:15 -0500
Reply-To:     ImageJ Interest Group <[log in to unmask]>
Sender:       ImageJ Interest Group <[log in to unmask]>
From:         Wayne Rasband <[log in to unmask]>
Subject:      Re: Measuring the total area of particles
In-Reply-To:  <[log in to unmask]>

> I'm new to ImageJ and hope you can help me with my Problem.
> I want to measure the total Area of the Particles I get with the
> "Analyse Particle" option. I get it through coping the reuslts in
> Gnumeric and adding it together but there should be a easier way.
> Additionaly, I want to correlete the complete Area I have measured to
> the area of the particles.
> Is the any way or plugin to do this?
> Example:
> I take an Image (8-Bit), treshhold it, and put a round selection.
> Now I can read (Histogram) the number of white an Black pixels.
> I have to do the same step for my Particles. Know I get the nummber an
> mean size of my particles. I put it all in Gnummeric and get:
> "you have 255 Particles, mean size 67px, they cover 23 % of the
> selection"
> Ist there any way to get this in ImageJ directly?

In ImageJ 1.29, checking "Summarize" in the Analyze Particles dialog
box results in the following information being displayed:

     particle count
     total area
     average particle size
     area fraction

-wayne

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