Latest Contributions by GregorSanders1

Solution to this issue from ESRI: Create a new project I choose the following processing options: Under initial: Rapid (you can use full), Aerial Grid or Corridor, Make sure you change the Calibration Method to   Geolocation and Orientation . Everything else is default. Click apply and ok Now save and close the project. ** Browse to   C:\Users\USERNAME\Documents\Drone2Map\Projects\PROJECTNAME\Project\Data   and right click and edit the processing_options file in notepad Change <internalParamOptimization>All</internalParamOptimization> to <internalParamOptimization> AllPrior </internalParamOptimization> and save the file Reopen the D2M Project and Run the process The output should be on the ground ** If the settings are saved as a template for future projects, do this instead:  unzip the saved template and edit the file engine_settings   ... View more

Hi Tony, Thanks for the suggestion.  However, no change.  Previously I had EGM96 set as the vertical reference for both image and project. ... View more

Anthony, I have the same problem with processed outputs being produced below ground, and nothing about the EXIF data suggests that there is a problem with the photo heights. Photo heights are all ~ 240m.  Terrain is flat and an independent DEM for the area covering the drone project area shows an MSL of ~ 130 m.  DJI P4 RTK drone flying height was 110 m.  Everything adds up. And yet: 2.  The DTM is output with values ranging from minus 208 m to minus 191 m 3.  The DSM is output with values ranging from minus 208 m to minus 138 m The solution proposed above wont work if the DSM itself is also produced at below ground (which it is). I am fairly convinced this is an issue with the software.  The same photo set uploaded to DroneDeploy processes correctly without any modification to the heights, as it should, because they are correct. In Drone2Map I have also experienced other projects with the same negative height issue, flown next to others that are processed correctly.  There is apparently no logic to why this happens sometimes. I have lodged a case with a link to download the photos, in the hope that someone can process the project and experience the same issue:   02420057 ... View more