[Insight-users] Finding saddle points in a 2D image

[Roman Grothausmann]

Dear mailing list members,


How can I find saddle points and image border pixels with minimum 
gradient in a 2D image? I need those as starting points for tracing the 
gradient decent (as is done in the Random access iteration example in 
the user guide) because I want to detect valley traces in a 2D image 
that originate from saddle points (for no border pixels) or pixels with 
minimum gradient (for image border pixels).
Is there a way to find these two types of special points with ITK?

Any help is very much appreciated
Roman

-- 
Roman Grothausmann

Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
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