[postgis-users] idea of automatically identifying water bodies , forest bodies from image and making classes in postgis raster

Zelio Fernandes zelio.fern at gmail.com
Thu Mar 1 04:37:06 PST 2012

after going through the documentaion i didnt find any function that will
automatically identify and distinguish waterbody , forest , raods and
building and class them together in a raster table(image imported )like it
is done in ARCGIS. it would have been very good idea if the unsupervised
classification function was there in postgis.......The ST_Reclass function
just allow to do grouping of pixels however i want to write a algorithm that
will automatically identify and distinguish water,forest , building...etc

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