Automated Number Plate Recognition (ANPR) uses camera-based optical character recognition on images of vehicle license plates to read the plates. ANPR was invented in 1976 in the UK and uses specialized CCTV cameras to detect license plates in real-time. Reasons for using ANPR include round-the-clock vehicle monitoring, reducing crime, easing toll management, and generating violations for traffic infractions.

1. Automated Number Plate Recognition(ANPR)

2. Automated Number Plate Recognition (ANPR)
• Invented in 1976 in UK by Police Scientific Development Branch
(PSDB).
• Camera based Technology that performs Optical Character
Recognition (OCR) on images to read License Plates (LP) of Vehicles.
• Real time detection of English Alpha-numeric characters of LP
number.
• ANPR cameras are specialized type of CCTV cameras.

3. OPTICAL CHARACTER RECOGNITION (OCR)
OCR is a Scanning technology that converts printed or handwritten
images into editable text.
Text Conversion
General
Processing
of OCR
Vehicle Image
Acquisition

4. WHY TO USE ANPR SYSTEM?
• Round the clock monitoring of Vehicles.
• To Reduce burglaries
• To ease the process of Toll Management.
• To reduce crime.
• Challan generation to violators for violating Traffic rules.
• Ability to automate access control systems (premise, parking
entry/exit).

5. PREREQUISITES (Minimum)
IP Based Camera
• Min. 2MP
• 25/30 FPS
• Fixed Box Type
• IP65 Casing
IR Illuminator
• Auto IR Cut Filter
• Range min. 20m
• LED Technology
• IP 65 Casing
Local Processing Unit (LPU)
• Intel Core i3 (2.4 GHz) or
better
• RAM:: min. 2 GB or
better
• HDD:: min. 500 GB or
better
• Loaded Application
Software

6. System Layout
Field
of
View
6-6.5m
15-20 m
Cam 1 with IR
3.5m
LPU
Control Room
OFC/Wireless
Field
of
View
Cam 2 with IR
3.5m
Lane 1
Lane 2

7. Process Flow
Cameras always in Active Mode and does not require any trigger
If any vehicle comes in FOV, ANPR camera locates the license
number plate
LPU performs OCR on captured number plate image & saves in
JPEG format the database
Processing takes place locally and data transfers to Control Room
periodically
If network gets break, then data will be saved locally for at least 7
days

8. Transaction Details
 Each vehicle record will be a single file and contain the following::
• Vehicle Registration Number
• Date & Time
• ANPR Site Location
• Lane Number
• Image of the number plate
 Approximate size of single file will be around 1 MB.
 Transaction size varies as per camera requirement and will increase with
increase in resolution.

10. Graphic User Interface (GUI)

11. Vehicle Tracking through ANPR System

12. Key Features of ANPR System
 Placement of cameras can be from backside or frontside.
 System captures the image of all vehicles moving at a speed upto 150kmph.
 Automated 24*7 surveillance
 Auto alerts for notifying Hot-listed - Stolen, Suspected, Wanted/VIP vehicles
 Capable of detecting and recognizing license plate numbers of four
wheelers, 2-3 wheelers, LMV & HMV.
 Multiple entry points can be integrated together at a single central console
 Category management - Create or upload vehicle details for creating hot-list
 Can be integrated with Video management software (VMS)

13. Application Areas of ANPR
 Parking Management
 Tolling at Toll Plaza
 City/State Border Control
 Traffic Laws Enforcement
 City Surveillance