Re: tube diameter

Posted by Paxton Provitera on Aug 08, 2007; 9:52pm
URL: http://imagej.273.s1.nabble.com/tube-diameter-tp3698688p3698690.html

Hi Karsten.
This sounds like exactly what I need, but I am very 0confused as how to do
it.
Could you  give me some greater detail in exactly what to do?

Thanks.

-Paxton


On 8/8/07, Karsten Rodenacker <[hidden email]> wrote:

>
> Take all pixels in the skeleton of your tubes. They should reside on
> the let's say crete line (Gipfellinie) of the distance transform.
> Beware of border problems!
> Karsten
> Am 08.08.2007 um 21:46 schrieb Paxton Provitera:
>
> > Hi.
> > I have images that I have thresholded and then run through
> > Process>Binary>Distance Map.
> >
> > The images are of tubes in which I would like to extract the radius
> > value
> > (or the largest and center value given by the distance map).
> >
> > The images vary in size but are mostly 640x480.
> > From the following example pixel values I want to extract only the
> > value of
> > 6:
> >
> >
> > Sample pixel values from a distance map image:
> >
> > 0 0 0 0 0 0 1 2 3 4 5 6 6 5 4 3 2 1 0 0 0 0 0
> > 0 0 0 0 0 1 2 3 4 5 6 6 5 4 3 2 1 0 0 0 0 0 0
> > 0 0 0 0 0 0 1 2 3 4 5 6 6 5 4 3 2 1 0 0 0 0 0
> > 0 0 0 0 0 0 0 1 2 3 4 5 6 6 5 4 3 2 1 0 0 0 0
> > 0 0 0 0 0 0 0 0 1 2 3 4 5 6 6 5 4 3 2 1 0 0 0
> >
> > I've been stuck on some algorithm to extract the relevant information.
> > Thanks for any help on this.
> >
> > -Paxton
>