[Numpy-discussion] finding connected areas? (original) (raw)
Alexandre Fayolle alexandre.fayolle at logilab.fr
Tue Jun 13 03:31:54 EDT 2006
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On Tue, Jun 13, 2006 at 01:41:17AM +0100, stephen emslie wrote:
I have used adaptive thresholding to turn an image into a binary image so that I can locate a particularly large bright spot. However, now that I have the binary image I need to be able to group connected cell's together and determine their relative sizes. Matlab has a function called bwlabel (http://tinyurl.com/fcnvd) that labels connected objects in a matrix. That seems like a good way to start, and I'm sure there is a way for me to do something similar in numpy, but how?
You will get this in numarray.nd_image, the function is called label. It is also available in recent versions of scipy, in module scipy.ndimage.
-- 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/20060613/5691ae59/attachment.sig>
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