How to detected isolated/closed contours?

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Upupaepops
Upupaepops il 24 Apr 2014
Risposto: Image Analyst il 24 Apr 2014
Hello. I'd like to know if there are any functions that I can use to detect detached and isolated closed contour lines. I've obtained the contour lines by using:
[C,h] = contourf(...)
But C gives location of points in contours of the same value, and I find it hard to sort out those which forms a close loop and those spread over the space domain. I wonder if there're any algorithms to detect closed contour / detached filament like those in the following image? (I use arrows to indicate some filaments of interest)
Thanks for any kind help.

Risposte (1)

Image Analyst
Image Analyst il 24 Apr 2014
I think you should be able to use imregionalmax and imregionalmin in the Image Processing Toolbox.

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