Posted by
David Schaffer on
URL: http://imagej.273.s1.nabble.com/question-on-edge-detection-tp5019908.html
Dear all on ImageJ listserve.
I am pretty new to image processing and this is my 1st post.
We have some images of arteries in mouse brains.
We want to locate the artery edges with some precision as we want to
measure the waveforms that result from the heartbeats.
We anticipate that no off-the-shelf edge detector algorithm will do
the whole job, so we're prepared to learn to do some programming in
ImageJ.
To start, we have applied the Canny edge detector.
The results can be rather good, but still some false positives for the
edge we want, and some of that edge is missing.
Not surprising -- one set of parameters can't work for the whole image.
Question: are there approaches to extending a given edge?
I hope such approaches might be able to adjust the local parameters
as they go, just guessing as best they can using local data.
Is this just a pipe dream?
Thanks,
Dave
--
J. David Schaffer
Visiting Research Professor
College of Community and Public Affairs
Binghamton University
Binghamton, NY 13902-6000
[hidden email]
607-777-9145
--
ImageJ mailing list:
http://imagej.nih.gov/ij/list.html