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Edge Video AnalyticsReference design

Intrusion and Line-Crossing Alert

Adds person detection to existing CCTV and raises alerts for restricted zone entry, line crossing and loitering. Zones and lines are drawn in a browser on each camera view, the decision is made on a local box, and only alerts leave the site. It is for security and operations teams guarding switchrooms, chemical stores, server rooms, warehouse aisles and equipment areas.

ManufacturingHomes and buildings

Talk to an engineer See the hardware

Fenced security post with razor wire and lit windows at dusk, surrounded by trees — Photo: Dietmar Rabich, CC BY-SA 4.0, Wikimedia Commons. Shows the setting, not this installation.

0.09 to 0.27 s: Line crossing to alert on J4012 (720p, 5 fps, 130 s test clip)
0.09 s: Zone entry to alert on J4012 (same test clip)
0.09 to 0.29 s: Loitering alert against true time on J4012 (same test clip)
8/8: Crossing directions called correctly with no wrong-way alerts (same test clip)

Results reported by the design's authors on their own test setups. Yours depend on the site, so we confirm them in a pilot.

The problem

Why it matters.

Staff cannot watch every camera, so people entering restricted zones, crossing lines or loitering go unnoticed.

The flow

From signal to action.

01SenseIP camerasFixed cameras send H.264 video over RTSP to the detection box.
02DecideDetect and trackThe box finds people in each frame and gives each one a track ID.
03DecideRule checkEach track is tested against drawn zones, lines and dwell times.
04RecordAlert storeEvery alert is saved with its snapshot, camera and rule, and survives restarts.
05ConnectAlert outputAlerts go out over MQTT to NVRs, PLCs or alarm systems and live to the browser.
06PeopleOperator reviewGuards acknowledge alerts, which logs who and when, and can export to CSV.

Deployment architecture

How it is wired.

The devices on site, what carries their data, where the decision is made and where the result goes.

01SenseOn site

IP camera1 per protected area

02ConnectCarries the data

RTSP

03DecideRuns the model

reComputer J40121 per site
reComputer J30111 per site
reComputer RK3588-401 per site
reComputer Industrial R2035-121 per site
Docker host (no accelerator)1 per site, optional

04Your systemsWhere results land

H.264
MQTT
HTTP
WebSocket
Docker

How it works

Step by step.

01Point existing fixed cameras at the door, aisle or area to protect.
02Connect each RTSP stream to the detection box.
03Draw a zone with 4 clicks or a line with 2 clicks on the camera view, and set dwell time.
04The box flags entry, one-way line crossing and loitering.
05Guards review and acknowledge alerts in the browser workbench.
06Subscribe your NVR, PLC or alarm panel to the MQTT alert feed.

The hardware

What goes on site.

Items we stock can go straight in the bag. Everything else we source and quote with the installation.

reComputer J4012Jetson detection box1 per siteSourced on quote
reComputer J3011Smaller Jetson detection box1 per siteSourced on quote
reComputer RK3588-40Rockchip detection box with hardware video decode1 per siteSourced on quote
reComputer Industrial R2035-12Hailo-8 detection box for few streams1 per siteSourced on quote
IP cameraVideo source, existing cameras can be reused1 per protected areaSourced on quote
Docker host (no accelerator)Optional shared hub gathering alerts from several boxes1 per site, optionalSourced on quote

Before you install

Fixed cameras that will not be moved after zones are drawn.
A clear view of the door or area, with people not hidden behind racks or pillars for long.
A LAN link from cameras to the box. No internet is needed.
An open MQTT port with a password set if another machine must receive alerts.
Power and a secure location for the detection box.

Good to know

It detects people only, not vehicles, parcels or tools, and it cannot judge whether a procedure was followed.
It carries no security certification. No alert does not prove nothing happened.
The Hailo box decodes video on the CPU, so it cannot scale to many cameras.
The person model weights have their own licence terms. Confirm them before commercial use.

How we deliver it

Paper to site, one team.

01Site surveyWe walk the site, or review photos and drawings, and agree what to measure and where each device goes.
02PilotOne lane, one line or one room first. We tune it on your conditions and agree what good looks like.
03Roll outWe supply the hardware in India with GST invoices, install it, and connect it to the systems you already run.
04SupportSpares, remote checks and model updates, with one team to call when something changes.

Questions

Asked before buying.

Can we use our existing CCTV cameras?

Yes, if they are fixed and send H.264 over RTSP.

Does it work without internet?

Yes. Detection, rules, alert storage and the broker all run on the local box.

Will it alert on vehicles or animals?

No. It is built for people only. Other targets need a different model.

Want this on your site?

Tell us the site and the problem. We come back with a pilot plan and a priced hardware list.

Book a call with an engineer Write to us

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