Posted by
Gabriel Landini on
Apr 01, 2014; 10:20pm
URL: http://imagej.273.s1.nabble.com/color-pixel-for-Strahler-order-tp5007132p5007170.html
On Tuesday 01 Apr 2014 12:41:54 you wrote:
> Hi Gabriel,
>
> On Apr 1, 2014, at 08:54, Gabriel Landini <
[hidden email]> wrote:
> > The number of branches of order 1 should be the same as the number of end
> > points at the start of the skeleton, or am I missing something obvious?
> >
> > How is it possible to have 128 branches of order 1 with only 67 end
> > points?
> Looking at the snapshot Ignatio posted on the top of the documentation[1]
> page:
http://fiji.sc/images/b/be/Analyze_skeleton_09_13_2009.png> All the skeletons have more branches than tips (e.g, the largest has 9
> end-points and 15 branches).
Hm... that is not right me thinks.
A "end point" is one that has only 1 connection in its 3x3 neighbourhood.
A skeletonized Y should have 3 end points, same as T.
K would have 4.
The order 1 branches (easiest to compute) would go from an end point to the
first junction pixel.
I noticed this because I started implementing a sequential pruning macro using
morphological operations and get different results that the bsh script, but I
can visualise the result with my macro and it seems to be correct but the
script does not show anything (so I can't say what it is really doing).
Cheers
Gabriel
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