Mountain bike trail scanned with a GoPro
This is a project i've been working on for about 6 months now - capturing a mountain bike trail using just a GoPro (i.e. no drones, no lidar scanners, no rtk gps, etc.)
The whole trail is about 1km long, and ends up being around 8,000 photos to process.
It is processed using some custom tooling - at the heart of it is COLMAP but I have it carefully control the combination of photos + other metadata like the gravity vectors and gps data that the GoPro gives to more or less eliminate error drift over such a long distance. I have compared it with a government top-down 1m resolution LIDAR (where you can see the trail faintly on it) to confirm it is within +- 0.5m of that.
Not released yet but will be released soon 🤞
Still lots of things on the list to improve but its finally starting to take shape.