[GRASS-user] Alternative to orfeoToolBox GRM segmentation module for big images?

Laurent CELATI lcelati at biotope.fr
Mon Mar 10 05:54:52 PDT 2025


Good afternoon ,
With the orfeo GRM segmentation module https://www.orfeo-toolbox.org/CookBook-8.1/Applications/app_GenericRegionMerging.html
i obtain interesting results for small images/area , for instance for one input ortho image (3 bands) . Please see result below :

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i would like to get this kind of results this time for a bigger area  / big image. But with GRM, i get error memory message because this module does not support large image. Could you advise me/direct me towards an orfeo segmentation or another grass, qgis tool / associated parameters & settings that would support large input images and that would allow me to obtain this type of segmentation results (hight size of  segments,segments that have a high heterogeneity acceptance threshold ).Maybe module as "LSMSSegmentation" or " LargeScaleMeanShift" would be appropriate/relevant ?
Thnaks so much.
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