Hi Giuseppe, Maybe you can use r.watershed [0] to get the "basins".
Best regards, Pedro Venâncio [0] https://grass.osgeo.org/grass72/manuals/r.watershed.html 2017-01-18 19:16 GMT+00:00 Giuseppe Amatulli <giuseppe.amatu...@gmail.com>: > Hi all, > > > > I would like to "segment" an image using a sort of Voronoi > <https://urldefense.proofpoint.com/v2/url?u=https-3A__en.wikipedia.org_wiki_Voronoi-5Fdiagram&d=CwMFaQ&c=-dg2m7zWuuDZ0MUcV7Sdqw&r=WXcS58IfKIlNshJRe1p51UO4aV2lTPDP2KeAvExEWkM&m=-q05ggwZ7xB31XO6ZJhmFYht4GKQ2nmFojS6li_t2As&s=Cqh6IsnZ5-oxcE2yVMRceyhb4KwTB2q3ihdDv8E4GWg&e=> > algorithm > on a cost surface instead of distance between point. > > > > Below you can see an image where the black pixels identity areas with high > cost value. I would like to identify the "valley" between theses black > areas. > > > > In the second image I draft by hand an ideal solution for few high cost > areas. > > > > Which grass command can do this kind of delineation? > > > > Thanks, > > > Giuseppe > > > [image: Inline images 1] > > [image: Inline images 2] > > -- > Giuseppe Amatulli, Ph.D. > > Research scientist at > Yale School of Forestry & Environmental Studies > Yale Center for Research Computing > Center for Science and Social Science Information > New Haven, 06511 > Teaching: http://spatial-ecology.org > <https://urldefense.proofpoint.com/v2/url?u=http-3A__spatial-2Decology.org&d=CwMFaQ&c=-dg2m7zWuuDZ0MUcV7Sdqw&r=WXcS58IfKIlNshJRe1p51UO4aV2lTPDP2KeAvExEWkM&m=-q05ggwZ7xB31XO6ZJhmFYht4GKQ2nmFojS6li_t2As&s=2WUybjpe6r7Te9PU70VIWSGVIuSPRvgtrQM-Ej6RBuY&e=> > Work: https://environment.yale.edu/profile/giuseppe-amatulli/ > > > > > _______________________________________________ > grass-user mailing list > grass-user@lists.osgeo.org > https://lists.osgeo.org/mailman/listinfo/grass-user >
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