[Insight-users] "water line" on image intensity or "gradient trace" filter in ITK?

[Roman Grothausmann]

I just found in the itk user guide the example for the Random access 
iteration which I think does pretty much what I'm looking for.
Am I right in that assumption???


Roman Grothausmann wrote:
> Dear mailing list members,
> 
> 
> Is there a filter in ITK whose result is the trace that a water stream 
> (or very small ball) would run along if a 2D image is regarded as 
> intensity mountains?
> 
> To my understanding this is following the gradients of the image from a 
> user defined starting point.
> 
> For the case there is no such filter in ITK yet I wonder which of the 
> many gradient image filters in ITK I should use. GradientImageFilter?
> 
> And how to follow the gradient trace from a starting point? I found in 
> the user guide some GradientDescentOptimizer but used in conjunction 
> with image registration. Is that some how usable to follow a gradient 
> image trace to result in a binary image where the trace is imaged?
> 
> Any help is very much appreciated
> Roman
> 

-- 
Roman Grothausmann

Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
Bereich Funktionale Materialien
Institut für angewandte Materialforschung
Hahn-Meitner-Platz 1
D-14109 Berlin	

Tel.: +49-(0)30-8062-2816
Fax.: +49-(0)30-8062-3059

Vorsitzender des Aufsichtsrats: Prof. Dr. Dr. h.c. mult. Joachim Treusch
Stellvertretende Vorsitzende: Dr. Beatrix Vierkorn-Rudolph
Geschäftsführer: Prof. Dr. Anke Rita Kaysser-Pyzalla, Prof. Dr. Dr. h.c. 
Wolfgang Eberhardt, Dr. Ulrich Breuer
Sitz der Gesellschaft: Berlin
Handelsregister: AG Charlottenburg, 89 HRB 5583