I'm working with ArcGIS on a DTM made of 1x1km tiles (cell size 20cm). When I try to create an hillshade model based on this DTM I get visual artifacts on tile junctions, whereas there are no visible drop or gap on the DTM itself.
Edge artifact between tiles
DTM Cross section
I get the same result if I combine first the tiles and create the hillshade model or if I create the hillshade model tile by tile. I also get the same result if I create the hillshade model with Global Mapper.
Do you have any advice to overcome this issue ?