# Video in. A measured 3D record out. Spatial Summit Group https://spatialsummitgroup.com/technology Updated 2026-11-01. Access: invite-only. TRACE turns site video and photos into a measured, dated 3D record your teams can search, replay and dispatch from. It connects reality capture with site documentation: selected frames become placed cameras, and the sources stay on file for inspection. ![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. ## Start with a phone walkthrough. ![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. A video to 3D building model workflow starts with phone or action-camera footage; OSV is a supported 360 source. Uploads attach to a visit whose date a person chooses. TRACE selects sharp seed frames across clips. 360 observations are sliced into perspective views before solving or training, preserving their source identity and camera grouping. [2,868 perspective 360 views · 2026-09-16](https://spatialsummitgroup.com/methodology#measurements) — Part of the warehouse’s mixed-source input inventory. ## Position cameras. Train the record. ![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. COLMAP/hglomap builds the structure-from-motion map and estimates camera poses. Remaining keyframes are registered against the seed map; placement failures are reported. LichtFeld trains the Gaussian representation. Record acceptance checks held-out score documents, per-view results and split consistency, while visual inspection exposes defects that an average can hide. [54 withheld panorama views · 2026-09-16](https://spatialsummitgroup.com/methodology#measurements) — Warehouse · 23.64 dB mean PSNR on views held back from training. ## Open the record in a 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. A verified SOG rendition compresses the Gaussian Record for browser delivery through the PlayCanvas viewer. The accepted PLY remains its identity; SOG is a serving copy. Rendering depends on browser and device resources. Camera-path playback needs a verified relationship between the footage, source times and the Record’s frame. [13.08 bytes per Gaussian · 2026-09-19](https://spatialsummitgroup.com/methodology#delivery) — One warehouse export · 261,645,206 bytes for 20 million Gaussians. ## Return to the same viewpoint. ![Two drone photos of one building, summer and autumn, aligned on the facade and wiped from one to the other, with the changes outlined: a box truck gone, different vehicles in the yard, new deck furniture and more pallet bins](https://spatialsummitgroup.com/landing/media/film-diff.webp) Summer and autumn visits compared · Planned view. Each site has one reference. TRACE measures how each new visit lines up with it, and a person accepts or rejects the match. Once accepted, visits from different dates open from the same camera. Automatic acceptance is Planned. [4,138 training views · 2026-09-16](https://spatialsummitgroup.com/methodology#measurements) — Warehouse dataset · 4,195 registered views; 57 reserved for evaluation. ## Ask questions, with sources attached. ![A forklift found behind stacked boxes in a warehouse record](https://spatialsummitgroup.com/landing/media/film-find.webp) Search result: forklift · see-through view Planned. Ask a question about a site, and the answer cites the footage it came from. Search a spot or a time range, or search for an object within one visit. Search across every visit is Planned. Tickets can retain a pin, Visit, clip moment and Finding links. Autonomous monitoring, Finding and Ticket creation, and completion verification are Planned. [4,138 training views · 2026-09-16](https://spatialsummitgroup.com/methodology#measurements) — Warehouse dataset · 4,195 registered views; 57 reserved for evaluation. ## Keep control of your site history. Only people you invite can see your sites. Owners can export a site with its visits and tickets at any time. Record downloads are separate authenticated references; Site threads and an interactive viewer are excluded. A request for access never creates an Account. ## Questions, answered. ### Does TRACE position every video frame? TRACE places sharp keyframes from the video and draws the camera path through them. ### How does a record open in the browser? Records open in the PlayCanvas viewer as compressed SOG files. Large records need a capable device. ## 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).