longest inscribed lines?
Posted by
Michael Schmid on
Jul 17, 2009; 10:49am
URL: http://imagej.273.s1.nabble.com/longest-inscribed-lines-tp3690610.html
Hi everyone,
maybe someone of you has a solution for the following problem:
I have images of elongated martensitic grains, e.g.:
http://www.iap.tuwien.ac.at/~schmid/MartensiticGrains.pngI want to get some indication of the lengths of the grains to compare
it with other images.
The Fourier transform is dominated by the grain widths, so it does
not help.
Often, the grains are not separated but touch others, so caliper
length (Feret's diameter) won't work either.
A possibility would be searching for the "longest inscribed lines",
i.e., the longest straight lines that fit into the foreground of the
image, or even better, the longest line with a limited curvature (to
follow slightly curved grains). Does anyone know about a plugin or
some other transform/method that could do this?
Thank you,
Michael