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Edge Video AnalyticsReference design

Parking Space Occupancy Detection

Uses the CCTV cameras already in a car park to mark each bay as occupied, free or unknown. A small edge box on site does the analysis and publishes bay states over MQTT for guidance signs and parking software, and no video leaves the premises. It suits basement parking in malls, offices and apartments, and lots with reserved EV or visitor bays.

Parking and smart cityRetail

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Hillside parking lot in Mussoorie seen from above, rows of white cars parked in marked bays — Photo: Paul Hamilton, CC BY-SA 2.0, Wikimedia Commons. Shows the setting, not this installation.

6 streams: Cameras handled by reComputer J3011 with no dropped frames over 620 s (vendor measured)
6.5 ms: Median processing time per frame on J3011 (vendor measured)
36.6 ms: Median processing time per frame on RK3588 with one camera (vendor measured)
~10 s: Time before a disconnected camera's bays are marked unknown, on RK3576 (vendor measured)

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.

Car parks need to know which bays are free in real time using the cameras they already have.

The flow

From signal to action.

01SenseBay camerasIP cameras mounted high send H.264 video over RTSP to the edge box.
02DecideOccupancy checkThe box checks each drawn bay for a vehicle once per second per camera.
03ConnectMQTT statesEach bay's state is published to an MQTT broker whenever it changes.
04ActSigns and LEDsRed and green bay lights and level or zone boards show where space is free.
05RecordParking softwareYour parking system logs states for turnover, average stay and peak use.

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 camera (1080p RTSP with IR)1 per 6 to 12 bays

02ConnectCarries the data

RTSP

03DecideRuns the model

reComputer J30111 per site
reComputer RK3576-301 per site
reComputer J40121 per site

04Your systemsWhere results land

MQTT
H.264
HTTP
parking guidance software
bay indicator LEDs

05ActWhat happens next

Signs and LEDs

How it works

Step by step.

01Use the configurator to size the edge box for your camera and bay count.
02Mount cameras 3 to 6 m up on pillars or the ceiling, angled down so no car fully hides its neighbour.
03Open the bay editor in a browser and draw one box per bay over the camera view.
04Check that occupied bays show red and free bays show green, then save.
05Point your MQTT consumer, sign controller or parking software at the broker.

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 J3011Standard edge box for 2 to 4 cameras and dozens of bays1 per siteSourced on quote
reComputer RK3576-30Low-power box for small lots1 per siteSourced on quote
reComputer J4012High-capacity box for 8 or more cameras1 per siteSourced on quote
IP camera (1080p RTSP with IR)Watches a row of bays1 per 6 to 12 baysSourced on quote

Before you install

IP cameras that output 1080p H.264 over RTSP, with infrared for dim basements.
Mounting points 3 to 6 m above the floor, angled down across the bays.
A network path from every camera to the edge box.
An MQTT broker, or software that subscribes to one, to receive bay states.
Power and a secure spot such as a comms room for the edge box.

Good to know

Low or flat camera angles let one car hide the next bay, which causes wrong readings.
Multi-stream capacity was only measured on the J3011. Add cameras one at a time on other boxes and confirm each keeps updating.
The page gives two different capacity figures for the standard box, about 50 to 100 bays and about 150 to 180 bays, so plan with a site test.
If a camera goes offline its bays switch to unknown after about 10 seconds, so signs need a sensible fallback.

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?

Yes, if the cameras stream H.264 over RTSP and are mounted high enough to see each bay without cars blocking each other.

Does any video leave the site?

No. Analysis runs on the edge box and only bay states go out over MQTT.

How many bays can one box handle?

A J3011 ran 6 cameras without drops, and each camera covers 6 to 12 bays. The page's totals differ, so we size it on a site test.

Want this on your site?

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

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