Pipeline
reading
Source
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Ground
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Frame
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Tracked
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Reading the floor.

The floor

Rehearsal The outline is the Dell and NVIDIA plan. The people on it are from the Enfuse lab, not Barcelona, and the stand is placed so the sensed floor crosses the pavilion row: a chosen position, not a survey.
Dwellper 0.1 m cell Zone Tripwire Tracked now Boundary

Time held, by area

Counting, and what it is worth

What the cameras say about it

Every figure above comes from lidar. Two cameras bolted to the two lidars give a second opinion on each tracked object: person, phantom, or no opinion, where no opinion is the ordinary answer outside a camera’s wedge. This is the check no camera-only system can make on itself and no lidar-only system can make at all.

What the wire actually carries

Every field on a tracked object, read from the live stream. No name, no face, no descriptor, no re-identification key — not withheld, absent. Somebody who leaves and comes back is a new object with a new number, which is the property that makes this safe and also the reason a naive count of arrivals would be wrong.