Posted by
Michael Schmid on
URL: http://imagej.273.s1.nabble.com/binary-image-processing-delete-small-forks-dots-tp4999104p4999115.html
Hi Rainer,
you can remove single foreground pixels in a binary image by Process>Binary>Erode, if you set the 'count' in the binary Options to 8.
For larger objects, use 'Analyze Particles' with a size range and 'Show: masks' as output.
For pruning side branches of a skeleton, see Gabriel Landini's page
http://www.dentistry.bham.ac.uk/landinig/software/software.html(there you will find several different plugins and macros for it; you have to try which one is best for you)
Hope this helps,
Michael
________________________________________________________________
On Jun 18, 2012, at 11:21, Rainer M. Engel wrote:
> Hello everyone,
>
> I'm very confident to bring things here a step further by transferring
> some processing elements to ImageJ and I came across some points
> concerning binary images.
>
> I made a skeletonized version of an image and get lots of small dots or
> masks (via Analyse Particles) with small areas of perhaps 1 to 8 px. It
> would be relatively easy to filter them by the results table information
> and delete corresponding masks from the selection (ROI Manager) i.e. via
> macro.
>
> But though this seems to be a very important step like De-speckle or
> Median on typical images, I wonder If there are already tools/plug-ins
> for that kind of purpose.
>
> Maybe there are workflows/plugins for these szenarios:
> - delete small dots/forks from binary/skeletonized images by area-size
> - connect lines/forks via distance value
>
>
> Any thoughts kindly appreciated.
>
> Regards,
> Rainer
>
>
>
> --
> Rainer M. Engel, Dipl. Digital Artist
> scientific|Media GbR
> Pichelsdorferstr. 143
> D-13595 Berlin
>
> --
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