CAM-483
More people per square metre than three minutes ago, and nobody moves
Half an hour before the doors open, in front of one of the stand gates. People have converged into a compact block that fills half the forecourt and narrows towards the opening of the gate. Twenty paces away, on the left, the forecourt is practically empty: you can see the ground between one person and the next. Three staff in hi-vis have been left on the edge of the block, outside it. In the middle there is no longer any gap between one person and the next, and the block has not moved for three minutes.
Turn on IRIS Vision
AI-generated image
What IRIS understands
What it recognises in this scene
- compressed block of people
- opening of the stand gate
- back of the block, at a standstill
- empty forecourt right beside it
- member of staff on the edge of the block
What this camera measures
An alert says something is happening. The reading says how much.
- 4,6 / m²+1,8People per square metre in the area
- 0,1 m/s-0,7Speed at which the group is moving
- 3 minTime it has gone without moving
- 620People inside the area
- 3Staff visible on the edge
- 20:31Time of the alert
The figures on this screen are an example from the illustration, not any client's measurement.
The rule
You decide once. IRIS applies it always.
If
there are more than four people per square metre in the gate area and the group has not moved for two minutes
Then
- alert the control room with the gate, the people per square metre and how long it has been stopped
- save the video from three minutes earlier, when the density started to rise
- send the same image to the teams working that gate
The instruction that set it up«Tell me when there are more than four people per square metre in front of a gate and the group has not moved for two minutes.»
What changes
What changes for whoever runs security at the venue
What hurts in a crowd is not how many people there are: it is how many there are per square metre and whether they are moving. The first warning sign is that people stop moving forward. IRIS counts the people inside the drawn area and measures how fast the whole mass is shifting: both figures are counted, not estimated. With that, the head of security sees the problem before it shows up on a screen. Opening another gate, holding back the flow or sending staff is his decision.
What people usually ask
Does IRIS predict a crowd crush?
No. IRIS predicts nothing. It states two things it has counted: how many people there are per square metre in a specific area and how fast they are moving. When the first figure rises and the second falls, it raises an alert and shows since when. What that means in that venue, with that crowd and at that hour, is interpreted by the head of security. The camera supplies the figure and the video; the judgement belongs to a person.
Does IRIS close an entrance when density rises?
No. IRIS does not act: it does not open, it does not close and it sends nobody anywhere. Opening another gate or cutting off the incoming flow are decisions with knock-on effects, and they are taken by whoever answers for the venue. What changes is when they are taken: with density and speed updated by the minute, they are taken with figures and with time to spare, not once the problem is visible from the window.
Where does the figure of people per square metre come from?
From counting. An area is drawn onto the image, it is told how many square metres it covers on the real ground, and IRIS counts how many people are inside it. It is not an estimate: it is a division. And that is where it matters: counting people is the only measurement we hold approval for from the Spanish Metrology Centre, and it is NeuralPax that does it, a separate licence built into IRIS. If a figure is going to justify closing a gate, it had better be an approved one. We don't claim accuracy: we certify it.
Other cameras
- CAM-480 · The queue tells you when the gates should open
- CAM-481 · One gate standing idle while the next one jams
- CAM-482 · Twenty-four arrive a minute, the search line clears nine
- CAM-484 · The ramp is packed and the concourse next to it is empty
- CAM-485 · Twenty thousand people leaving at once, all through the same gate
- CAM-486 · A merchandise stall has eaten half the exit
See it for yourself
This isn’t a video. It’s a slice of the real screen.
A summary of the real interface, played hands-free. You see one case from start to finish; what you do not see are the other screens, and there are many.
- The rule gets built
- It goes to every camera
- Published, it watches alone
- And then it fires
Next step
Who sees the child who has fallen at the far end of the playground?
13 cases: 12 raise an alert when something happens and 1 only measure. You see each image as it is, and then with what IRIS understands on top.
Who is watching a site where there is almost never anybody?
44 cases, and in every one of them IRIS raises an alert when something happens. You see each image as it is, and then with what it understands on top.
And the best part
By the eighth hour of a shiftnobody watches the way they did in the first. That is not a flaw.
It is being human. A camera has no eighth hour: at four in the morning it understands what it understood at noon, and it speaks up just the same.
Tell us your problem and we will say whether IRIS understands it, or not yet.
We reply the same working day.