Preserving Natural Treasures
The tree was scanned in about 3 hours, with one person capturing details from the inside of the tree and another outside. Since the tree is about 7 meters tall and using drones in the area wasn’t permitted – we had to improvise. By placing a camera on a long pole and shooting blindly, we were able to reach about 4m in height and capture the tree bark in detail. The rest of the top branches were captured with a 400mm telephoto lens. Inevitably, top-down data of the top branches wasn’t captured and had to be sculpted/cleaned by hand. Surprisingly, no matter the strong wind in the area (the tree is located right across the street from the seaside), continuous movement of the branches didn’t ruin the final 3D reconstruction.
Skovfogedegen is an old hollow oak tree in Klampenborg north of Copenhagen. The tree has existed since about 1200. Even though the wood in the middle of the tree’s stem has been ripped away, the tree continues as the transport of water and nutrition takes place in the growth layer just below the bark.
The oak was named ‘Skovfogedegen’ because it stands at the forester’s house: Klampehus. Skovfoged means forester in Danish. In the past, foresters were entitled to sell schnapps, and one of the foresters used the hollow tree as a public house.
Later, the tree was used as a chapel by the renowned German forester J.G. von Langen who was head-hunted to Denmark by King Frederik V in 1762 to put the Danish forestry authority into shape. Von Langen and his German employees were Catholics and held services in the hollow tree.
3D Scan Data
This project was a part of our non-commercial activities that we enjoy once on the break from client work. The main driving force of this projects is preservation and sharing. On top of that, we are making the best out of our time to test new scanning methods and tools.