Re: tube diameter

Posted by karo03 on Aug 08, 2007; 9:30pm
URL: http://imagej.273.s1.nabble.com/tube-diameter-tp3698688p3698689.html

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