topic Best Practices for Processing Images in Cliff Areas in ArcGIS Drone2Map Questions https://community.esri.com/t5/arcgis-drone2map-questions/best-practices-for-processing-images-in-cliff/m-p/698544#M560 <HTML><HEAD></HEAD><BODY><P>I frequently fly in reservoir areas that sometime contain large cliffs.&nbsp; Most flight planning softwares do not have terrain awareness so the AGL height of the drone will not adjust with the terrain.&nbsp; Maps Made Easy does, but they reference 30M DEM's that do not capture the abrupt nature of the cliffs and so the compensation for AGL height is not adequate.&nbsp;</P><P></P><P>I have mitigated this in two ways.&nbsp; First is to do two flights at different heights.&nbsp; My question here is: is it ok to load two sets of images from different heights to one processing run?&nbsp; I have done this before and the results looked good but not sure if it would be better/more accurate to process each set of images separately then mosaic them together in GIS.</P><P></P><P>My other main question is that I receive errors in the DSM in areas that have large cliffs, as the vertical face does not render very well.&nbsp; So would including oblique images into the 2D processing help correct this?&nbsp; Drone2Map only seems to recommend oblique imagery for 3D projects but I am wondering if it would be helpful in DSM generation in cliff areas.&nbsp; Finally, if I include oblique, and nadir images from two different heights will that mess up the processing or introduce errors?&nbsp; Just curious basically how best to deal with mapping areas with cliffs.</P></BODY></HTML> Thu, 14 Mar 2019 20:30:45 GMT DavidSchwab1 2019-03-14T20:30:45Z Best Practices for Processing Images in Cliff Areas https://community.esri.com/t5/arcgis-drone2map-questions/best-practices-for-processing-images-in-cliff/m-p/698544#M560 <HTML><HEAD></HEAD><BODY><P>I frequently fly in reservoir areas that sometime contain large cliffs.&nbsp; Most flight planning softwares do not have terrain awareness so the AGL height of the drone will not adjust with the terrain.&nbsp; Maps Made Easy does, but they reference 30M DEM's that do not capture the abrupt nature of the cliffs and so the compensation for AGL height is not adequate.&nbsp;</P><P></P><P>I have mitigated this in two ways.&nbsp; First is to do two flights at different heights.&nbsp; My question here is: is it ok to load two sets of images from different heights to one processing run?&nbsp; I have done this before and the results looked good but not sure if it would be better/more accurate to process each set of images separately then mosaic them together in GIS.</P><P></P><P>My other main question is that I receive errors in the DSM in areas that have large cliffs, as the vertical face does not render very well.&nbsp; So would including oblique images into the 2D processing help correct this?&nbsp; Drone2Map only seems to recommend oblique imagery for 3D projects but I am wondering if it would be helpful in DSM generation in cliff areas.&nbsp; Finally, if I include oblique, and nadir images from two different heights will that mess up the processing or introduce errors?&nbsp; Just curious basically how best to deal with mapping areas with cliffs.</P></BODY></HTML> Thu, 14 Mar 2019 20:30:45 GMT https://community.esri.com/t5/arcgis-drone2map-questions/best-practices-for-processing-images-in-cliff/m-p/698544#M560 DavidSchwab1 2019-03-14T20:30:45Z