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

[Richard Beare]

There is a gradient descent example in the ITK user guide illustrating
the use of neighborhood iterators.

On 4/22/10, Roman Grothausmann <roman.grothausmann at helmholtz-berlin.de> wrote:
> 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
>
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