Category Archives: UAVs

Update: Home-Brewed Ground Control Markers

In my original post I discussed how you could create your own ground control markers using a plotter and some vinyl. I said I’d update you on how well they weather. The photo above shows a fresh marker, hot off my trust HP Z5200 large format printer. In my mind as I typed that last sentence I mentally… Read More »

Home-Brewed Ground Control Markers

DIY UAV Ground Control Markers Hey, Kids! It’s All Drones These Days! Thanks to their availability, quality, and increasing ease of use, many GIS organizations are collecting aerial imagery with unmanned aerial vehicles (UAVs). With the abundance of high-resolution imagery coming from UAVs, members of the GIS tribe often find ourselves using ground control markers (GCMs) to georeference… Read More »