License plate recognition

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License Plate Recognition · Number Plate Recognition · Automatic Vehicle Identification · Car Plate Readers · Recognition Software · Plate Recognition Devices

We design, manufacture and market both OCR software and integrated OCR devices for Automatic Recognition of Vehicle License Plates: processing vehicle registration numbers (number plates) automatically by computer systems.

According to statistics there are currently more than half a billion cars on the roads worldwide. It therefore comes as no surprise that automatic number plate recognition (» ANPR) processes have become an integral part of traffic control and security. We need a number plate recognition technology that demonstrates a combination of speed, accuracy and cost-efficiency.

The CARMEN ANPR technology meets all these requirements, being fast, highly accurate and cost-effective. As proof of its success, ARH is working with approximately 2000 system integration clients across the globe, and operating many thousands of CARMEN ANPR systems in more than 190 countries.

How does the CARMEN ANPR work?

  1. The camera takes a picture of the detected vehicle
  2. CARMEN locates the number plate within the picture and reads the number using character recognition technology
  3. The picture and relevant data is then forwarded to the system responsible for data storage and further processing

ANPR software and hardware

Through the combination of various software versions and available optional hardware, ARH Inc. offers a range of flexible solutions to system integration companies.

  • CARMEN Parking - the cost-effective solution; ideal for vehicle entry
  • CARMEN FreeFlow - the unlimited; free flow recognition practical for vehicles passing at high speed
  • Different dongles for various SW versions: USB, PCIe, FXVD4 card, single or multi license
  • The FXVD4mc_s video capture card; connecting any analogue camera to the system
  • The FXCAMd 102 digital ANPR camera with motorized optic for easy installation and ideal image quality
  • The FXCAM IBW_2000 ANPR camera; a "plug-and-play" pre-set solution for the optimal image
  • The smart ANPR camera, the all-in-one unit, integrated ANPR in the camera

Features of the CARMEN ANPR Engine


  • Works in numerous countries - recognizes characters of Roman, Cyrillic, Chinese, and Arabic alphabets and so on
  • High rate of recognition - over 98% with alphanumeric number plates
  • Fast recognition - the full reading process takes around 100 milliseconds
  • Cost-effective technology - outstanding price/performance ratio
  • Easy and fast to integrate - various operating systems and programming languages

Since you have been reading this text, more than 100.000 number plates have been read and identified by the CARMEN APNR engine in five continents across the world at the following locations:


  • Multi-storey car parks
  • Paid parking lots
  • Underground car parks
  • Pedestrian precincts
  • Truck stops
  • Border crossings
  • Motorways
  • High traffic junctions
  • Tunnels
  • Bridges
  • Tolls
  • Protected sites
  • Restricted areas