Metrici QR Code engine
Distributed QR Code recognition engine
Features
- Architecture
- Distributed detection and recognition, free-flow or triggered
- Recognition speed
- Less than 50 ms/QR Code at 200 pixels width
- Number of QR Codes in each frame
- Unlimited
- Trigger type
- Over UDP from a Barix Barionet 50 LAN controller, from the Metrici LPR web interface, or from another Metrici engine (LPR, PPD, AC, etc.)
- Chained trigger
- Yes, to another Metrici engine (LPR, PPD, AC, etc.)
- Companion stream
- Yes
- QR Code tracking
- Yes — direction of movement is determined by analyzing successive image frames
- Detection window
- Yes, user definable
- Single QR Code mode
- Yes
- Number of doors/gates controlled
- Up to two for each connected camera, driven independently depending on the recognized QR Code
- GPS coordinates
- Yes, if a GPS dongle is connected
- Weight
- Yes — the weighing scale should be connected to a Barix Barionet 50 equipped with a special Metrici firmware
- Speed
- Yes, by using a Metrici Observer Radar
- Data type for each recognized QR Code
- QR Code, moving direction, first seen, last seen, location name, camera name, GPS latitude, GPS longitude, QR picture, environment picture, companion picture, weight, speed
- Parallel processing
- Adaptive multithreading, up to 8 threads for each connected camera
- GPU acceleration
- Yes — Intel, AMD or Nvidia supported
- Data push
- POST method over HTTP; two events generated: check_action and reporting
System requirements
- OS
- Ubuntu 24.04 LTS MATE, Linux CentOS 7 (64-bit)
- CPU
- Intel Xeon; AMD Ryzen, Threadripper or Epyc
- GPU
- Intel, AMD or Nvidia; mandatory for more than 2 cameras/server
- System memory
- 512 MB for each connected camera, but no less than 4 GB/server
- GPU memory
- At least 256 MB available for each connected camera
- Storage
- Up to 512 KB for each QR Code stored in the buffer, depending on the camera resolution and image compression
- Cameras/server
- Up to 256 connected cameras on each server; unlimited number of servers
- Camera type
- IP; MJPEG, MxPEG or H.264 video stream; HTTP or RTSP/RTP transport protocols
- Supported camera producers
- ACTi, Arecont, Avigilon, Axis, Bosch, Dahua, Diviotec, Hikvision, Mobotix, Novus, Pelco, Samsung, Sony, Uniview, Vivotek