http://imagej.273.s1.nabble.com/Re-automated-process-tp3704941p3704946.html
Thanks Bob, I will give it a shot. It occurred to me that what I need to
>Martin,
>
>Here is something totally made up. It is supposed to give the relative
>change in the mean when the Process/Filters/Maximum... filter is applied
>with a radius of 0.5 pixel. Experiments show some interesting properties.
>It gives 4/L for collections of particles that all squares of side L pixels.
>Lines of thickness T give approximately 2/T. (This is difficult to
>demonstrate for diagonal lines with T > 1 because of ambiguities about
>jaggies. ImageJ seems to make diagonal lines that are too fat. Rotating
>horizontal lines and choosing the threshold to minimize the result gives the
>expected macro output, but then the line looks too thin....) The macro
>produces numbers that are usually in the range of .4 to .47 for subsets of
>the particles.gif example. Running Erode once on the whole image increases
>the result from .4357 to .5104.
>
>Bob
>
>run("Set Measurements...", " mean redirect=None decimal=4");
>run("Measure");
>mean1 = getResult("Mean", nResults-1);
>run("Duplicate...", "title=temp");
>run("Maximum...", "radius=.5");
>run("Measure");
>close();
>mean2 = getResult("Mean", nResults-1);
>if(mean1 == 0){
> print(0);
>}else{
> percentChange = (mean2 - mean1)/mean1;
> print(percentChange);
>}
>
>
>
>Robert P. Dougherty, Ph.D.
>President, OptiNav, Inc.
>Phone (425) 467-1118
>Fax (425) 467-1119
>www.optinav.com
>
>
> > -----Original Message-----
> > From: ImageJ Interest Group [mailto:
[hidden email]] On Behalf Of
> > Martin du Saire
> > Sent: Tuesday, August 30, 2005 2:12 PM
> > To:
[hidden email]
> > Subject: binary texture
> >
> > Hi,
> >
> > I am looking for a method for measuring the granularity or clumpiness of a
> > binary image. What I have come across so far (fractal dimension and
> > lacunarity, textual entropy, angular moments, inverse difference
> > moments...) but they all seem geared to grayscale, and computationally
> > expensive. I will essentially be working with images like the
> > Particles.gif sample image ported with ImageJ.
> >
> > Thanks for any suggestions
> >
> > Martin