detecting edges automatically with line selection

Posted by Thomas Theelen on Jan 22, 2009; 9:15am
URL: http://imagej.273.s1.nabble.com/detecting-edges-automatically-with-line-selection-tp3694000.html

Dear all,

I want to do the following:
1. Segment OCT images by automatically detecting different gray
value areas (I think this works best with edge detection?)
2. Mark these borders with lines, following the border contour
3. Measure the distance between lines to get tissue thickness
curves
4. Apply the thickness curves to several images in a stack to get
thickness maps or 3D reconstructions of layers
This seems very complex. I would be happy for advice for at least points
1-3.
Linked is a typical image. Analysis should take place in 8-bit.

Link to foto:
http://picasaweb.google.nl/lh/photo/ouTkCBXor7pY-YOGYsDR2Q?authkey=5XvSk
ES-bF4&feat=directlink

Many thanks, Thomas

____________________________________________

Thomas Theelen, M.D.
Radboud University Nijmegen Medical Centre
Department of Ophthalmology (409)
Philips van Leydenlaan 15
6525 EX Nijmegen, The Netherlands
Phone: [phone]
Fax:    [phone]






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The Radboud University Nijmegen Medical Centre is listed in the Commercial Register of the Chamber of Commerce under file number 41055629.