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Ground extraction: Classify regions by colour range?

Question asked by Michael McDonald on May 20, 2020
Latest reply on May 27, 2020 by Rui Wu

I have flown a section of coast line and I would like to extract ground (ie sand). Problem the ground extraction still includes the small bushes. Is there a way in TBC to classify regions by colour range? Would to measure sand erosion and need a DTM just with the sand elevations plenty of space between the bushes to get sand elevations around 50% with no vegetation.