FAQ & Information

  • Imagery must have at least 60% in-track overlap and should have at least 50% cross-track/orthogonal overlap.
  • Imagery has overlap between cross-track and in-track image frames.
  • Images must contain required EXIF information. (Camera Make, Model, Image Width, Image Height, Focal Length, DateTimeOriginal)
  • Shutter Speed >= 1/1000th, Auto ISO, White Balance set to ‘Sunlight’, ‘Day’ or ‘Cloudy’ depending on conditions.
  • Images are shot with one camera and focal length.
  • Images are geo-tagged.
  • Non-NADIR images should be removed if processing a NADIR only collect (Images from Turns, Landing, Takeoff)
  • Images should not be pre-processed so EXIF metadata is preserved.
  • Images are NADIR or near vertical if processing a NADIR only collect. 6 megapixel or greater, at least 12 megapixel recommended.
  • Images are TIF or JPEG format and no corrupt images/headers. Images are same width x height. (4000×3000)
  • Images are same aspect ratio. (4:3 recommended)
  • Flight Path should be Parallel Line (aka Lawn Mower) or other large overlapping style.
  • Flight Path should provide sufficient coverage of survey area. Sufficient coverage means 60% – 80% overlap, less than 50% overlap yields less data for gradient generation in that direction.
  • Flight should be from sufficient elevation. (i.e. >80 meters) Flights below 50m or less should have identifiable terrain features.
  • Use a GPS enabled camera with Latitude, Longitude and Elevation EXIF tags.
  • Required EXIF tags include Camera Make, Model, Image Width, Image Height, Focal Length, DateTimeOriginal.
  • Geo-tag your photos using GeoSetter (GUI), exiftool (command line) or a similar tool.
Using the guidelines above will yield the best results while using the DroneMapper cloud processing platform or our desktop software. Each job requires a large amount of memory, disk space and processing power to complete. You are paying for this processing time, so it is smart to input the best quality dataset possible. We recommend using Chrome or Firefox with DroneMapper cloud.

An example of a good imagery collection using a DJI Phantom 3 Advanced.
An example of a good imagery collection using a DJI Phantom 3 Advanced with MaxMax NIR camera.