Last summer, I was called to carry out the 3D survey of the "Porte Saint-Pierre" in Nantes.
That was an interesting operation.
First because I didn't know Nantes, and the week I've spent there makes me feel that this town is a really good place to live.
I've met interesting people, talking about the use of 3D scanning, lidar survey and orthophoto in archaeology and architecture, and that was great to get the feedback on the data we produced.
The gate was not so easy to survey. Two of the 4 faces of the building are hidden by big trees so I had to use either a bucket truck and a telescopic mast to reach the best point of view for each photo and get a full coverage of the elevations.
For the 2 elevations that were easy to photograph, only 20 photos were used to get the good orthophotos. The 2 other ones required more than 170 images...
click to enlarge