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Edge Video AnalyticsScenario

Parking Lot Management

Plate capture and bay detection

A camera-based system for car parks that does three jobs: shows which bays are free, counts vehicles in and out, and reads number plates at the gate. All video is processed on a smart camera or a local reComputer, so footage does not leave the site. It suits parking operators, malls, campuses and integrators who want to replace ground loops or ultrasonic bay sensors with cameras.

Parking and smart city

Talk to an engineer See the hardware

Open-air parking lot with marked lanes and parked cars in front of the Bengaluru airport terminal — Photo: Prateek Karandikar, CC BY-SA 4.0, Wikimedia Commons. Shows the setting, not this installation.

38 ms: Plate capture and read time on reComputer J4012 (vendor table, test conditions not stated)
52 ms: Plate capture and read time on reComputer J3011 (vendor table)
125 ms: Plate read on reCamera alone, camera to decision (vendor table)
< 10 ms: Barrier output response on J4012 and J3011 hosts (vendor table)

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.

Per-bay sensors and ground loops are costly to install and wear out, central video servers eat bandwidth, and cloud plate reading stalls the gate when the link drops.

The flow

From signal to action.

01SenseCamera capturereCamera units or existing IP cameras watch bays, entry lanes and gates, with IP cameras streaming H.264 over RTSP.
02DecideEdge analysisThe camera or a reComputer on the LAN runs bay occupancy, vehicle tracking and plate reading locally.
03DecideDecision rulesA bay only changes state after 15 matching frames, vehicles are counted at a virtual line, and plates are checked against a local whitelist.
04ConnectMQTT publishBay states, free space counts and entry and exit totals are sent to an MQTT broker for signs or parking software.
05ActBarrier triggerFor a listed plate the host fires a relay, RS485 or Wiegand output to lift the barrier.
06RecordPlate recordsEach read is saved with confidence and a snapshot, kept on the host for 7 days by default.

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

reCamera 2002w 8GB1 per 3 bays, rounded up
IP camera (H.264, RTSP)

02ConnectCarries the data

RTSP
ONVIF
RS485

03DecideRuns the model

reComputer RK3576-301 per site
reComputer J3011 (Orin Nano 8GB)1 per 6 cameras
reComputer J4012 (Orin NX 16GB)1 per site
reComputer RK3588-40
reComputer R1100

04Your systemsWhere results land

MQTT
Mosquitto
Node-RED
Wiegand
Relay outputs

05ActWhat happens next

Barrier trigger

How it works

Step by step.

01Draw a box around each bay on the camera's web page, or draw a counting line across the entry lane.
02The camera or host decides which bays are taken and tracks each vehicle that crosses the line, with cars and trucks counted separately if needed.
03Every change in bay state and every crossing updates the totals sent over MQTT.
04At the gate, the host reads the plate, checks the whitelist and opens the barrier without a round trip to any server.
05Each vehicle leaves one record with the plate, a confidence score and a snapshot for later checks.

The hardware

What goes on site.

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

reCamera 2002w 8GBAll-in-one bay camera with on-board AI and a Node-RED dashboard1 per 3 bays, rounded upSourced on quote
reComputer RK3576-30Entry-level host for a single camera, counting or plate reading1 per siteSourced on quote
reComputer J3011 (Orin Nano 8GB)Host that runs analysis on existing IP camera streams1 per 6 camerasSourced on quote
reComputer J4012 (Orin NX 16GB)Higher-capacity host for counting and plate recognition1 per siteSourced on quote
reComputer RK3588-40Mid-range host option listed in the compute comparisonSourced on quote
reComputer R1100Barrier controllerSourced on quote
IP camera (H.264, RTSP)Video source for bays, lanes or gates; 1080p or better for plates1 per view, existing cameras can be reusedSourced on quote

Before you install

Cameras and host on the same LAN, plus an MQTT broker if counts feed other systems. Internet is not needed for detection or plate reading.
Bay cameras placed at an angle over the bays, and gate cameras 3 to 8 m from the lane with a 1080p or better RTSP stream.
PoE for reCamera units, or a 12 to 24 V DC supply for the industrial hosts (some models accept 9 to 36 V or 48 V).
Sealed IP66 or fanless units for wet or dusty outdoor spots, within an operating range of -20 to 60°C.

Good to know

Plate reading only covers mainland China plates (7 character blue and 8 character green). Indian plates are not listed, so ANPR needs testing or a different model before use in India.
The page gives no accuracy figures for bay occupancy, counting or plate reads.
Bays per camera is stated two ways (up to 3 in one place, 4 to 6 in another), so confirm coverage with a site test.
Bay status waits for 15 matching frames, so changes appear with a short delay.

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.

Will it read Indian number plates?

Not as published. The page lists only Chinese blue and green plates and says other formats are not supported, so plate reading would need testing or a retrained model.

Does it need internet?

No. Bay detection and plate reading run on site over the LAN. You only need a broker if counts go to another system.

Can we use our existing CCTV cameras?

Yes, if they stream H.264 over RTSP. For plate reading the camera should be 1080p or better and 3 to 8 m from the lane.

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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