Overview#
A vehicle of interest crosses a camera at a motorway junction at 06:43. The plate read hits the active watchlist instantly, an alert fires to the assigned investigator and to dispatch, and the geographic correlation module begins tracking the vehicle's route through the camera network. By the time an officer is positioned ahead of the likely route, the system has already surfaced the vehicle's pattern of previous sightings at that junction over the past three weeks.
Argus Surveillance ALPR provides real-time vehicle identification and tracking through integration with ALPR camera networks. The system ingests license plate reads from distributed camera infrastructure, correlates plates against watchlists and investigation databases, and delivers instant alerts to operators when vehicles of interest are detected. Combined with the platform's facial recognition capabilities, it enables comprehensive surveillance operations from a single interface.
The platform handles high-volume ingestion from thousands of cameras simultaneously, with sub-second alert delivery for watchlist matches and full audit logging of all recognition events for regulatory compliance. All recognition operations are governed by the EU AI Act compliance module where applicable.
Open Standards#
- ONVIF (Open Network Video Interface Forum): Camera onboarding probes ONVIF device services via SOAP (GetCapabilities, GetProfiles, GetStreamUri) to discover supported stream URIs and automatically normalise camera registration settings.
- RTSP (RFC 7826): Real-time Streaming Protocol is the primary transport for ingesting live video from camera infrastructure, with port-level validation and path-level stream negotiation for primary, analytics, and preview channels.
- WebSocket (RFC 6455): Real-time plate detection events and watchlist hit alerts are pushed to operator consoles over persistent WebSocket connections, with topic-based broadcast and automatic subscription recovery.
- GraphQL: All ALPR read queries, watchlist management mutations, and surveillance incident subscriptions are exposed through a typed GraphQL API using the Strawberry framework with per-field permission enforcement.
- EU AI Act (Regulation (EU) 2024/1689): Biometric recognition operations are governed under the high-risk AI system provisions; Article 5(1)(g) prohibitions on real-time remote biometric categorisation are enforced at the compliance layer, with mandatory audit logging and legal basis validation.
- GDPR (Regulation (EU) 2016/679): All plate read records and associated surveillance data are processed under documented lawful bases per Articles 25 and 32; breach notification obligations under Article 33 are integrated into the platform compliance workflow.
- OAuth 2.0 / JSON Web Tokens (RFC 7519): API access to ALPR and surveillance endpoints is authenticated via Bearer JWT tokens, with tenant-scoped claims used for organisation isolation throughout the service layer.
Last Reviewed: 2026-03-02 Last Updated: 2026-04-14
Key Features#
- Real-Time Plate Recognition: Process license plate reads from camera feeds in real time with sub-second latency from detection to operator notification, supporting multiple plate formats across jurisdictions.
- Watchlist Management: Create and manage multiple plate watchlists organised by investigation, threat level, or operational purpose with automatic expiration, cross-agency sharing, and bulk import/export capabilities.
- Hit Alert Delivery: Instant multi-channel notifications when a watched plate is detected, including in-app alerts, push notifications, email, and integration with dispatch systems for immediate field response.
- Facial Recognition Integration: Correlate ALPR detections with facial recognition data from co-located cameras to associate vehicle occupants with plate reads, subject to EU AI Act compliance controls.
- Geographic Correlation: Map all plate reads to geographic locations with timestamp precision, enabling route reconstruction, pattern-of-life analysis, and predictive location modelling for vehicles of interest.
- Historical Search: Query the plate read archive to find all detections of a specific plate, all plates seen at a specific location, or plates matching partial patterns across configurable time ranges.
- WebSocket Real-Time Updates: Live streaming of plate detections and watchlist hits to operator consoles through WebSocket connections, with automatic reconnection and missed-event recovery.
- Multi-Jurisdiction Support: Handle plates from multiple countries and jurisdictions with format-specific recognition models, jurisdiction-tagged watchlists, and cross-border coordination workflows.
- EU AI Act Compliance: All recognition operations are governed by the biometric compliance module, with mandatory audit logging, legal basis validation, and prohibition enforcement for regulated scenarios.
Use Cases#
- Vehicle Pursuit Support: Track a vehicle of interest across a camera network in real time, providing pursuing units with last-known location, direction of travel, and predicted route based on historical patterns.
- Stolen Vehicle Recovery: Automated detection of plates reported stolen with immediate alert routing to the nearest patrol unit and geographic correlation to identify likely recovery locations.
- Border and Checkpoint Operations: Process vehicles at checkpoints with simultaneous plate recognition and watchlist screening, automatically flagging vehicles linked to active investigations or intelligence alerts.
- Traffic Pattern Analysis: Aggregate plate read data to analyse traffic flow, identify congestion patterns, and optimise patrol deployment based on vehicle volume and movement trends.
Integration#
The ALPR platform integrates with the camera telemetry system for camera health and status monitoring, the geospatial mapping platform for geographic visualisation of plate reads and hits, the incident management system for automated alert-to-incident creation, and the investigation workflow for linking plate detections to active cases. All data flows through the EU AI Act compliance layer for regulatory governance.
Availability#
- Enterprise Plan: Full ALPR platform with unlimited cameras and historical search included
- Professional Plan: Core ALPR with limited camera count included; advanced analytics and historical search available as add-on