Thank you, donators! Minimum ground control points for #CCCamp19 are go. Currently, we will print them on 1x1.5m banners. If you want the banners to be bigger and viewable from higher altitudes, you can still help us. Just contact us here. Let's #CCCampmap with #drones!

@osm_to what are those exactly? ground truth markers with known location for automatic drone mapping?


@hadez @osm_to vermute: Referenzpunkte für 3d-Photogrammetrie

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