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Re: Cluster analysis [message #11135 is a reply to message #6792]

Mon, 02 March 1998 00:00

Alex Schuster
Messages: 124
Registered: February 1997

Senior Member

John Dickson wrote:

> I have a 3D image array containing a series of clusters of pixels
> of value 1, in a sea of value zero pixels.
>
> Has anyone an idea on how to produce an algorithm to count the
> number of pixels in each of these clusters?

Are the clusters connected? If not, I would look at the SEARCH3D
routine.

If you need more than that, maybe the routines NN_LEARN and NN_CLUST
could help, this is an implementations of the k-means cluster analysis.
I don't recall where I got them from, they were a bit hard to find, so
if anyone is interested, just ask me and I mail them.

Alex
--
Alex Schuster Wonko@weird.cologne.de PGP Key available
alex@pet.mpin-koeln.mpg.de

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[Message index]

		Cluster analysis code By: Andrea Spinelli on Mon, 12 August 1996 00:00
		Re: Cluster analysis By: Alex Schuster on Mon, 02 March 1998 00:00
		Re: Cluster analysis By: Ewan A. Macpherson on Fri, 27 February 1998 00:00

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