Posted by
Gabriel Landini on
Apr 02, 2014; 8:39am
URL: http://imagej.273.s1.nabble.com/color-pixel-for-Strahler-order-tp5007132p5007174.html
On Tuesday 01 Apr 2014 23:46:58 Tiago Ferreira wrote:
> Gabriel, I thought the issue related to segments flanked by two junction
> pixels. In the examples you describe such segments do not exist: All slab
> branches are associated to one end-point and one junction point.
> (BTW, as far as I can tell AnalyzeSkeleton_ (and thus the .bsh script)
> describe such skeletons properly).
Thanks for the follow up. Maybe we are talking different things
Yes there are more "branches" than "endpoints" in most skeletons, but I am not
talking about "any branches", but "order 1 branches" only.
Isn't what the table shows? Those would disappear after the first pass of
hierarchical pruning.
The example of a branch extending between 2 junction pixels can never be
"order 1 branch". It can only be the max (order of the previous-step branches)
if not all equal orders or the (order of previous-step branches + 1) if all
the same order. That is the Strahler algorithm.
Perhaps the analysis plugin does things differently, but that count does not
match the labelled Strahler pictures I have seen. But as I said earlier, I am
not sure what is exactly the plugin doing.
Thanks for any further clarification.
Cheers
Gabriel
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