We are looking to identify characteristics of a river from drone images in ArcGIS pro.

I have been able to successfully delineate the wetted channel, riparian zone and and wood material based on hue, saturation and value in ImageJ but we are hoping to find a similar tool in ArcGIS. I have investigated the classification tools and they seem to either be designed for specific jobs (e.g. NDVI), rely on a training dataset (e.g. supervised classification) or segment into groups (but this provides too many of the wrong groups and we cant specify the colour characteristics of each group!).

We are looking for a tool which allows you to threshold the images based on known values of RGB or HSV but maybe this doesn't exist?

Thanks for your help!

Rich

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