# Turn a site walk into a 3D record.

Spatial Summit Group

https://spatialsummitgroup.com/gaussian-splatting-from-video

Updated 2026-11-01. Access: invite-only.

Gaussian splatting from video turns a site walk into a 3D record your team opens in a browser: a digital twin from phone video. TRACE works out where each frame was taken, then trains millions of small 3D Gaussians until their renders match those frames.

![One camera move over a real property: the site as data points and flight paths, the scan turning it real, a dive through the warehouse door, and a route across the floor to one carton](https://spatialsummitgroup.com/landing/media/film-hero.webp)

A real site · route Planned.

[20 million Gaussians · 2026-09-16](https://spatialsummitgroup.com/methodology#measurements) — Warehouse research model.

## First position the images. Then learn the view.

![Ground-level footage from a warehouse walk](https://spatialsummitgroup.com/landing/media/still-warehouse-aisle.webp)

Warehouse source walk · 360 footage reframed at ground level.

TRACE selects sharp seed frames across the Visit’s clips and estimates their cameras with COLMAP/hglomap. It registers remaining keyframes against that map rather than treating a video as an unlocated stack of images.

LichtFeld trains the Gaussian reconstruction from placed views. The resulting Record carries its source lineage and quality measurements.

[4,138 training views · 2026-09-16](https://spatialsummitgroup.com/methodology#measurements) — Warehouse dataset · 4,195 registered views; 57 reserved for evaluation.

## A render has to earn its score.

![A warehouse record opening in TRACE: points spread through the aisles, then the full 3D model appears](https://spatialsummitgroup.com/landing/media/film-arrival.webp)

A warehouse in TRACE.

Evaluation images are withheld from optimization and scored after training. Record acceptance checks the split and reported per-view results; missing measurements block acceptance.

[54 withheld panorama views · 2026-09-16](https://spatialsummitgroup.com/methodology#measurements) — Warehouse · 23.64 dB mean PSNR on views held back from training.

## Carry the Record into the browser.

![The original drone video replayed from where it was filmed, inside the 3D record, then wiped to the record from the same camera](https://spatialsummitgroup.com/landing/media/film-rewind.webp)

Drone video played back in the 3D history.

TRACE serves a verified SOG rendition of an accepted Record. Compression reduces the data required to deliver its Gaussian representation.

The warehouse export used 13.08 bytes per Gaussian. Device resources, export settings and scene content still determine what is practical to open.

[13.08 bytes per Gaussian · 2026-09-19](https://spatialsummitgroup.com/methodology#delivery) — One warehouse export · 261,645,206 bytes for 20 million Gaussians.

## Questions, answered.

### Can I use a phone or action camera?

Yes. Walk steadily so neighbouring frames overlap, and keep the camera moving past each area.

### Is a Gaussian splat a mesh?

No. A splat is made of millions of small 3D Gaussians that render the scene as filmed; a mesh is a connected surface of triangles.

## Sources and access

[Methodology and dated measurements](https://spatialsummitgroup.com/methodology)

[Machine-readable capabilities](https://spatialsummitgroup.com/capabilities.json)

[Request access](https://spatialsummitgroup.com/#access).