Multi-Camera Object Tracking across the Whole Estate

Follow a subject across the whole estate. An investigation is rarely one camera, so IREX assembles a route: the operator confirms a match and then follows the subject through the estate in either direction in time, rather than collecting clips and reconstructing the sequence by hand.

How It Works

Tracking on the Map, Both Directions in Time

From a match, the operator moves camera to camera on the map, forwards to establish where a subject went and backwards to establish where they came from. Detailed object tracking works on indoor floor plans as well as the street map, so a station, a campus, or a venue is as navigable as a road network.

Tracking draws on whichever identifier is available. Faces where the face is visible; appearance-based re-identification where it is not, built from clothing texture, hat and hair color, and accessories such as bags and backpacks; plate and vehicle attributes for vehicles.

Every step is bound to the same Case ID as the search that began it, and written to the append-only audit log. A track is therefore a record of an investigation, not an untraceable trawl.

In Operation

On the Global Map and on the Floor Plan

Map Labeling and Smart Search Cut the Clicking

Advanced map labeling and smart map search reduce the distance between a question and an answer. Cameras cluster and split again as the operator zooms, so a network at city scale stays readable, and the route drawn across it carries the travel direction, the camera locations, and the first and last events. Partners report investigation time falling by 100x or more against manual playback with a motion detector.

A dark street map of Lower Manhattan and Brooklyn with four numbered detections of one subject joined by arrows, each waypoint carrying its own event thumbnail, and a card at the side with a portrait and a case reference.
Conceptual view of a route for one pre-identified subject. Investigation-time reduction of 100x or better. Source: MetroCCTV.

Indoors, the Route Continues on the Floor Plan

Once a subject enters a building the operator switches from the street map to that building’s plan, and the route continues inside it. From an event, a persons or vehicles list, or an alarm monitor, “Build a route” maps the path for the chosen time frame with travel direction, camera locations, and the first and last events, while a “Buildings Found” panel lists every plan the route touches, grouped by building. The plans carry the camera icons themselves, so each one shows its exact position and view direction. IREX applies a plan as a detailed spatial overlay on the street map rather than as an interior-only view, which is why it also works across large outdoor sites such as airports, campuses, and parks. Floor-plan tracking shipped in version 4.35.

A dark architectural floor plan of an airport terminal, with five numbered detections of one subject crossing the gate concourse from left to right joined by arrows, and a card at the side with a portrait and a case reference.
Conceptual view: the same case continued indoors. The subject, Jordan Ellis, and the case reference are fictional.

FAQ

Does tracking work if the subject changes clothes?

Face recognition and vehicle attributes are unaffected. Appearance-based re-identification is built on clothing and accessories, so a change of clothes does break that particular signal, which is exactly why the platform combines identifiers rather than relying on one.

Can we track indoors?

Yes. Detailed object tracking runs on floor plans as well as the street map, so corridors, platforms, and concourses are navigable at the level operators work.

Is a track auditable?

Yes, and it is the point. Every step is bound to the same Case ID as the originating search and written to an append-only, tamper-evident log that supervisors and independent oversight bodies can read.

Does this run on its own or does someone have to watch it?

It runs on its own and alerts a person. Detections are signals for a human to verify: no response runs autonomously, and the verification and decision are logged against the same Case ID as the detection.

Bring a Closed Case

The fastest way to judge this is to re-run an investigation you already solved and see how long it takes.