3D reconstruction of old spaces which no longer exist seems like a clear use case to me. There's loads of old videos of driving down a street in the 80s, or neighborhoods in cities which got replaced.
replyI can imagine future iterations of this which bring together other stills of the same space at that time to augment the dataset. Then perhaps another pass to fill in gaps with likely missing content based on probability or data from say the same street 10 years later.
It won't be 100% real, but I think it'd be very cool to be able to have a google-street view style experience of areas before google street view existed.
> it'd be very cool to be able to have a google-street view style experience of areas before google street view existed.
replyNow do Kowloon Walled City.
Video cameras are much cheaper and easier to use than LIDAR, like anyone can just pull out their phone, take a video and send it to this algorithm to get a reasonable point cloud of the environment. Sure, if you want an exact model of an environment and you have the time and money, LIDAR would give better results, but this is about doing more with less
replyThe actual objective is learning about these systems. It's called research.
replyYou can reconstruct accurate dimensions if you have IMU data.
replyN00b question from me, perhaps, but how easy is it to mount and run Lidar on aerial drones?
replyIt's easy but it's not cheap. Well, price is relative but capturing video is certainly cheaper.
replyAlso, I am not sure how heavy LIDAR units are, but remember that the heavier the payload the more the flight time is reduced. Some drones can only have a single payload, so if you also want to capture (high-res) video/imgs you need to fly again.
It all depends on the use-case.
The most available lidar is found on your iPhone, but the results are orders of magnitude less detailed than that derived from photogrammetry. How ever an advantage is that lidar is not confused by reflections.
replyHuh? LIDAR absolutely is confused by reflections. Not always the reflections you can see (because often it’s using IR wavelengths) but nonetheless, reflections.
reply