Automatic Number Plate Recognition (ANPR)
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The document discusses Automatic Number Plate Recognition (ANPR) systems. It provides the following key points: 1. ANPR uses optical character recognition on images captured by specialized cameras to read license plates on vehicles. 2. The cameras capture images that are then processed by ANPR software to detect, segment, and identify the license plate numbers. 3. ANPR systems are commonly used for electronic toll collection, traffic management, parking enforcement, and border control by storing images and license plate data.
Automatic Number Plate Recognition (ANPR)
- 1. AUTOMATIC NUMBER PLATE RECOGNITION By Vidyut Singhania Ahmed Zaid Faizee
- 2. INTRO O A vehicle registration plate is a metal or plastic plate attached to a motor vehicle or a trailer for Official Identification purposes. O The registration number is a numeric or an alphanumeric code that uniquely identifies the vehicle within the issuing region’s database.
- 3. SO WHAT ARE WE TALKING ABOUT ?? O Automatic Number Plate Recognition (ANPR) is a mass surveillance method that uses Optical Character Recognition on images to read the license plates on vehicles. O ANPR Cameras are specialized types of CCTV camera that has software built into it to help ID and capture license plates on still and moving vehicles.
- 4. WHAT’S THE BASIS / PREMISE ? O ANPR can be used to store the images captured by the cameras as well as the text from the license plate, with some configurable to store a photograph of the driver. O Systems commonly use InfraRed (IR) lighting to allow the camera to take the picture at any time of the day. ANPR technology tends to be region-specific, owing to plate variation from place to place.
- 5. SO WHERE IS IT USED ? O ANPR systems are here to stay – from Parking and Motorway Tolling to Border Control and Journey Time Enforcement O The most predominantly prevalent usage of ANPR, today, is in Electronic Toll Collection systems (ETC) / Intelligent Traffic Management Systems.
- 6. Purpose • The Automatic Number Plate Recognition is a system designed to help in recognition of number plates of vehicles. Basis • This system is based on the image processing system. Use • This system helps in the functions like detection of the number plates of the vehicles, processing them and using processed data for further processing like storing, allowing vehicles to pass or to reject vehicle.
- 7. IMPLEMENTATION Vehicle Web Camera Capturing Conditioning Detection Segmentation Identification SaveParallel portGate control Display Template Micro Controller
- 9. Basic Functions in ANPR Capture an optimized image of the car(s). Process the optimized image to segregate & read the license plate(s). Store the recognized image in the database.
- 10. Embedded Systems O The entire process of ANPR is hinged on the very basis of a singular Embedded System –the CAMERA. O The Camera forms the crux of the entire system – for without the presence of the Camera and it’s specialized software, there would be NO recognition of those License Plates.
- 11. ANPR Camera Pt.I O The Camera herein has to do a majorly different task from what the rest of its brethren have been designed to do. O There are numerous tasks it must carry out – and all within the timespan of less than a heartbeat!
- 12. Vehicle no Vehicle Camera Computer Door control Cam no size Brand name Ip add capacityCom name memory Pross speed storage Extract info Serves information monitor Serves info Resolution
- 13. Camera Pt.III To put it in the simplest of words – The Camera must take the most OPTIMIZED picture of the License rather than just a normal picture. The camera, triggered by the IR sensor, captures the image of the approaching vehicle and after further processing of the vehicle using image processing information of the vehicle such as number plate is stored in the computer using Automated Number Plate Recognition System.
- 15. Camera Pt.V O We generally use two cameras for traffic surveillance : i. The monochrome camera produces high-contrast license plate images characterized by great clarity. ii. Simultaneously, a second camera captures color overview images of the vehicles for additional video evidence.
- 16. How License Plate Capture initiates LPR Video Motion Detection Detects the vehicle passing through the illuminated region This triggers the camera to take a picture Input / Output Activation Triggers Recording upon I/O activation Triggers Recognition upon I/O activation
- 17. ANPR Software O There are numerous software features : i. High Recognition Rate ii. High Recognition Speed (<0.2s) iii. Supporting Multiple Lane Motion Detection iv. Standardized Resolution of 720*480 (NTSC) to provide higher accuracy v. Vehicle counter feature
- 19. Camera Specifications (General) O Mounted approx. 36 inches from the height of the street / lane. O As straight on without being in the line of travel. O Recording at a resolution of 30fps. O Settings in the On-Screen Display (OSD) to eliminate interference from light sources – like headlights or taillights. O Varifocal lens for narrowing the field of view to just over a single lane’s width. O Availability of RS 485 connection that goes back to the DVR and controls the OSD remotely. O Two most common types of cameras used are : O Bullet Camera O Box Camera
- 20. A Comparison of Numerous ANPR Specifications Models GV-LPR- 1 GV-LPR- 2 GV-LPR- 4 GV-LPR- 6 GV-LPR- 8 # of Lanes 1 2 4 6 8 Total FPS 30 60 120 240 240 FPS / Cam 30 CPU Core2Du o E6300 Core2 Quad Core2 Quad Intel i7920 Intel i9270 OS Supporte d Windows 2000 / Windows XP / Windows Server 2003 / Windows Vista HDD 250 GB 250 GB 250 GB 250 GB 250 GB RAM DDR2 1 GB DDR2 2 GB DDR 2 GB DDR3 2 GB DDR3 2 GB Source : CCTV Camera Pros
- 21. Camera Requirements Attribute Value Illumination 0.05LUX or lower Minimum Resolution 480 Horizontal Lines Auto Electric Shutter 1 / 60 ~ 1 / 1,00,000sec Auto White Balance Compensation Required Backlight Compensation Required Source : CCTV Camera Pros
- 23. bIblIography O http://en.wikipedia.org/wiki/File:LPR_Proc ess.JPG O http://www.kintronics.com/lpr/lpr- cameras.html O http://www.axxonsoft.com/integrated_secu rity_solutions/lpr/license_plate_recognition .php
- 24. THANK YOU