You can look at OTB (http://www.orfeo-toolbox.org/otb/) and Monteverdi (it is built on OTB functions). OTB provides some interesting segmentation functions (http://www.orfeo-toolbox.org/SoftwareGuide/SoftwareGuidech16.html#x43-23700016).<br /><br />Regards,<br />Aleksander<br /><blockquote style="border-left:1px solid #CCCCCC;margin:0pt 0pt 0pt 0.8ex;padding-left:1em;">Thank you Aleksander<div>I didn't anything about this webpage and specially these functions/scripts.</div><div><br /></div><div>Do you know any other research group that is doing the same work and made available a few scripts/functions?</div><div><br /></div><div>Thanks</div><div>Pedro<br /><br /><div class="gmail_quote">2010/5/27 Aleksander Yanovskiy <span dir="ltr">&lt;<a href="mailto:Yanouski@yandex.ru">Yanouski@yandex.ru</a>&gt;</span><br /><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hi Pedro<br /><br />There is also r.seg GRASS module for doing variational segmentation (<a href="http://www.ing.unitn.it/~grass/" target="_blank">http://www.ing.unitn.it/~grass/</a>). Some information about it can be found in <a href="http://download.osgeo.org/osgeo/foss4g/2009/SPREP/2Thu/Parkside%20GO4/1500/Thu%20G04%201545%20Zatelli.pdf" target="_blank">http://download.osgeo.org/osgeo/foss4g/2009/SPREP/2Thu/Parkside%20GO4/1500/Thu%20G04%201545%20Zatelli.pdf</a><br /><br />Regards,<br />Aleksander<br /><div class="im"><br />&gt; Hi Nikos<br />&gt; Thanks for your link. But besides that one, has anyone developed/tried a segmentation algorithm from R or any other tool?<br />&gt; Thanks<br />&gt; Pedro<br />&gt; On Tue, May 25, 2010 at 3:17 PM, Nikos Alexandris &lt;<a href="mailto:nikos.alexandris@felis.uni-freiburg.de">nikos.alexandris@felis.uni-freiburg.de</a>&gt; wrote:<br /></div>&gt; &gt; Развернуть<br /><div class="im">&gt; &gt; Pedro Roma:<br />&gt; &gt; &gt; I'm planning on using GRASS to do some landcover classification and I<br />&gt; &gt; &nbsp;&gt; wanted to know if anyone has developed, for GRASS, a multi-scale<br />&gt; &gt; &nbsp;&gt; segmentation algorithm? or integrated on GRASS a similar segmentator from<br />&gt; &gt; &nbsp;&gt; other software.<br />&gt; &gt;<br />&gt; &gt; Probably of your interest:<br />&gt; &gt; &nbsp;- &lt;<a href="http://grass.osgeo.org/grass64/manuals/html64_user/i.smap.html" target="_blank">http://grass.osgeo.org/grass64/manuals/html64_user/i.smap.html</a>&gt;<br />&gt; &gt; &nbsp;- &lt;<a href="http://grass.osgeo.org/wiki/Image_classification#Supervised_classification" target="_blank">http://grass.osgeo.org/wiki/Image_classification#Supervised_classification</a>&gt;<br />&gt; &gt;<br />&gt; &gt; &nbsp;Regards, Nikos<br /></div></blockquote></div></div></blockquote>