[R-sig-Geo] image classification in R

Marcel Austenfeld marcel.austenfeld at uni-bielefeld.de
Sat Apr 18 08:56:42 CEST 2009


I've implemented in my application a GUI for the "clara" algorithm from 
the "cluster" package to cluster image layers
(The layers and clustering results are visualized in ImageJ).
This works quite well for RGB images up to 5000*5000 pixel on a 32-bit 
Windows system.
The standard k-means algorithm works also well but for smaller images.

Cluster Analysis: Max 5000*5000*3(RGB) -> 6 centers: 70sec., 12 centers: 
100s (byte transfer!)

Hardware: AMD Turion 2.0 GHz Dual core, 3Gb RAM Windows Vista 32-bit.

Here is an Example:

With kind regards

M. Austenfeld

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