Turn a phone video into a 3D space
A slow walk with your phone camera is enough to build a Gaussian splat.
What to film
Move slowly and let every part of the place be seen from several angles.
Walk slowly through a room, or circle an object at a steady distance. Spacery needs somewhere between 60 and 300 sharp frames that overlap, so avoid fast turns, motion blur and long stretches of blank wall. A camera standing still on a tripod does not work, because the views have to move.
Photos work too
A set of overlapping photos works the same way as a video.
Take a photo every step or two as you circle an object or walk a room, with plenty of overlap between neighbours. HEIC photos straight from an iPhone are fine.
How the space is built
First the camera positions, then the splat.
Spacery picks sharp frames, works out where the camera was for each one with COLMAP and trains a Gaussian splat on a GPU, with nerfstudio's splatfacto or with Brush. The space opens from one of your real camera positions, in first person for a walkthrough or circling the subject for an orbit.
If the walk loses track partway, at a fast turn or a blank wall, the largest connected part is used and the note you get says how much was left out.
When it is ready
You get an email with a link to the finished space.
Training takes a while on longer captures, so there is no need to wait on the page. Spaces stay private until you share them.