[Numpy-discussion] finding connected areas? (original) (raw)

Alexandre Fayolle alexandre.fayolle at logilab.fr
Mon Jun 19 04:02:34 EDT 2006

I'm bringing back the discussion on list.

On Mon, Jun 19, 2006 at 12:01:27AM +0100, stephen emslie wrote:

> >You will get this in numarray.ndimage, the function is >called label. It is also available in recent versions of scipy, in >module scipy.ndimage.

Thanks for pointing me in the right direction. I've been playing around with this and I'm getting along with my problem, which is to find the areas of the connected components in the binary image. ndimage.label has been a great help in identifying and locating each shape in my image, but I am not quite sure how to interpret the results. I would like to be able to calculate the area of each slice returned by ndimage.labels. Is there a simple way to do this?

Yes, you will get an example in http://stsdas.stsci.edu/numarray/numarray-1.5.html/node98.html

Also, being very new to scipy I dont fully understand how the slice objects returned by label actually work. Is there some documentation on this module that I could look at?

http://stsdas.stsci.edu/numarray/numarray-1.5.html/module-numarray.ndimage.html

-- Alexandre Fayolle LOGILAB, Paris (France) Formations Python, Zope, Plone, Debian: http://www.logilab.fr/formations Développement logiciel sur mesure: http://www.logilab.fr/services Informatique scientifique: http://www.logilab.fr/science -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 481 bytes Desc: Digital signature URL: <http://mail.python.org/pipermail/numpy-discussion/attachments/20060619/72eb78f0/attachment-0001.sig>

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