What is the multi-camera personnel positioning platform?
direct answer
The multi-camera personnel positioning platform collects on-site videos through multiple fixed cameras, completes personnel detection and tracking in various viewing angles, and then uses ground calibration to convert image coordinates into unified site map coordinates to form position, trajectory, regional events and equipment status data. Compared with ordinary video surveillance, the platform adds unified coordinates, cross-camera association, trajectory management and business interface layers.
| Ability level | main output | Project configuration |
|---|---|---|
| video surveillance | Multi-channel images, recording and playback | Camera networking, video encoding and storage strategies |
| Personnel detection and single-way tracking | Personnel target, single path trajectory and detection status | Viewing angle, clarity, occlusion and detection model |
| Multi-camera field map positioning | Unify site map coordinates, cross-region trajectories and events | Ground calibration, overlap area, time synchronization and business rules |
Applicable scenarios and key points in program design
Typical application scenarios
It is suitable for factory passages, warehousing operation areas, key areas of the park, experimental spaces and robot collaboration areas covered by fixed cameras. It can be used for personnel distribution, area entry, trajectory playback and event linkage.
Adaptation to complex environments
For areas with dense people, occlusion, backlighting, nighttime, reflective ground or camera overlapping areas, the solution is adapted through on-site samples, camera position planning, image parameters and trajectory correlation strategies.
Multi-layer space processing
Steps, slopes, multi-layer platforms and areas with significant height changes use zone calibration, multi-plane models or three-dimensional positioning methods to keep the coordinate model consistent with the on-site spatial structure.
Identity and Privacy by Design
The platform takes personnel location and trajectory status as its core output; when real-name association is required, it can be combined with work badges, authorized identity systems or other compliance methods, and data permissions, retention periods and operation logs can be configured.
How to scale from an 8-way reference configuration to more cameras
direct answer
This case uses an 8-channel fixed network camera as a reference configuration, and the platform is organized by camera registration, independent collection tasks, calibration records, and unified interfaces. When adding a new camera, you can use the existing site map, trajectory and event data model, complete channel configuration, resource allocation, single-channel calibration and overlapping area association before accessing. The actual number of channels that can be carried is determined by video encoding, network bandwidth, decoding and model load, CPU/GPU resources, storage strategy and refresh cycle. Capacity accounting and target scale acceptance need to be completed before expansion.
Configurable camera registration
Use camera_id to manage RTSP address, encoding parameters, installation points, coverage area, start and stop status and calibration version. New channels are included in the platform through configuration.
Independent collection and state isolation
Each video channel uses independent acquisition tasks, frame buffers and running status; after adding channels, the acquisition, decoding and inference tasks can be split according to processes or computing nodes.
Camera-by-camera calibration and region association
The new camera independently maintains ground mapping and reviews spatial relationships in overlapping areas, allowing new channels to enter unified site map coordinates and trajectory association links.
Unified data and business interface
Position, trajectory, events and camera status use consistent data objects, and the business system receives the results through a unified REST or WebSocket interface.
Resource and acceptance check before capacity expansion
| Check items | Accounting basis | Expansion action |
|---|---|---|
| Internet and Video | Single channel code rate, resolution, frame rate, key frame interval and number of channels | Reserve link margin, configure sub-streams and reconnection strategies |
| Decoding and reasoning | Coding format, model calculation amount, processing cycle and concurrent tasks | Add workers, processes or computing nodes and reconfirm the scheduling cycle |
| CPU, GPU and memory | Single channel resource occupancy, peak concurrency and caching strategy | Allocate resources to target scale and perform stress and stability verification |
| Storage and data | Recording strategy, track retention period, event volume and log volume | Adjust storage capacity, retention rules and archiving policies |
| Calibration and correlation | Add new seats, coverage boundaries, overlapping areas and on-site space | Complete camera-by-camera calibration, overlap area review and expansion configuration acceptance |
Six steps from field data to project delivery
What can the platform output to the business system?
The platform uses FastAPI backend and Web console to support status query, real-time data update and system integration. Project docking can determine fields, authentication, timestamps, coordinate units, status enumeration and data retention policies by project.
| data object | Typical fields | business purpose |
|---|---|---|
| Camera operating status | Online status, frame age, number of reconnections, status code | Video link management and operation and maintenance alarms |
| personnel observation | Source camera, detection frame, foot points, timestamp, association status | Single-channel observation review and positioning data traceability |
| Venue map location | Map X/Y, coordinate unit, calibration version, source camera set | Regional judgment, map display and upper-level rule calculation |
| Trajectories and events | Track points, entry/exit, stay, boundary crossing and alarm status | Track playback, statistics and business system linkage |
Platform core capabilities
- Multi-channel RTSP video configured access and camera status management. This case uses 8 channels as the reference configuration.
- Person detection, single-pass tracking, ground coordinate mapping and cross-camera correlation.
- Field map location, track playback, regional events and alarm linkage.
- FastAPI, REST and WebSocket business interfaces.
Project deliverables
The scope of delivery can include back-end services, Web operation console, site map and camera configuration, calibration tools, business interfaces and project documents, and the channel size, computing resources, positioning accuracy, refresh cycle, data permissions and acceptance criteria will be determined based on on-site needs.