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

[Roman Grothausmann]

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
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