Powerful high performance ANPR software engine with Neural Network Technology
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- Unique Neural Network Processing
- Automatic 'in Picture' Trigger
- High Accuracy and High Speed Recognition
- 24 hour / 365 day all-weather Capability
- International Number Plate Reading Capability
- Geometric Correction for Camera Skew and Rotation
NDI Recognition Systems Ltd is the leading manufacturer and supplier of high performance, high accuracy Automatic Number (ANPR) systems. NDI-RS' ANPR products are based on a proprietary neural network recognition engine called Talon. Neural network technology is superior to any template based Optical Character Recognition (OCR) ANPR system, offering significantly higher performance and accuracy.
Talon is a software based processor designed to be installed on to modern computers running the Windows operating system. Talon is Web Services accredited and exceeds National ACPO ANPR Standards (NAAS)
Talon ANPR can be supplied with a diverse range of additional Talon application software, providing a complete 'end to end' ANPR solution.
Talon is the result of the most extensive development program undertaken by any ANPR company. Development was started by Thales Research and Technology in 1993 with an initial £10 million investment; the system is being continually refined and improved to maintain its leading market edge and superiority.
The Talon ANPR Recognition Process
First of all Talon software engine finds the presence of a vehicle registration plate. Talon has a sophisticated 'plate finding' algorithm and this algorithm very accurately detects the presence of a licence plate in the camera's field of view. When a licence plate is detected, a trigger is activated which initiates a suite of software recognition algorithms. These algorithms identify the position of the plate in the image, extract the plate image, apply geometric distortion compensation if necessary and segment the plate into individual characters.
Each character is then fed into a software neural network.This network uses a unique mathematical perceptron model, unlike multi layer perceptron models (MLP) the NDI-RS model cannot suffer from 'over learning' and a reduction in accuracy. The network produces an estimate for every character input resulting in a string of characters, which is its best estimate for the number plate. For each passing vehicle multiple recognition results are obtained and our advanced post processor will analyse and produce the best result.
These features contribute to the extraordinary accuracy of the Talon system.
What does a Typical Talon ANPR system comprise of?
The basic Talon ANPR system comprises of a PC and when we install Talon SP the PC becomes a Plate Recognition Unit (PRU). The only other elements to consider are a suitable frame grabber and a video source.
The PRU can also host additional hardware such as relay cards to control barriers and traffic lights and communications interfaces such as digital displays.
The PRU can also host a database and any additional application software if required.
The camera provides a video feed to the Talon PRU, which processes the images to produce a log of all number plates recognised, along with a time and date stamp, a confidence level and a camera identifier for each log entry.
Why should Talon be your first choice for your ANPR requirement?
- Trained Neural Network
- Neural Networks have a distinct advantage over alternative OCR solutions as the correct read rate of number plates is significantly higher. The Talon Neural network is simply the most advanced and accurate commercially available ANPR solution. The networks are not programmed in the traditional sense but are trained by example on a large number of repetitions of character sets. Consequently neural network based techniques are more able to recognise poorly defined, distorted and dirty characters, ensuring accuracy in the most demanding real world conditions.
- Multi lane Processing Capability
- The Talon Neural Networks are capable of accurate high speed plate recognition from multiple lanes of high speed and high density traffic. The system is currently capable of processing 4 camera feeds on a single PRU.
- Confidence Levels
- Each individual character within a vehicle number plate is given a specific score, this score is the confidence of read accuracy. Multiple number plate images are processed for each passing vehicle. This allows the PC to post the best possible result for each vehicle.
- BOF compatible
- Talon software holds BOF Web Services accreditation allowing all customers to continue to meet National ACPO ANPR Standards.
Our Talon ANPR products are available for a number of ANPR applications:
- Fixed Site System - town and city centre, border control and access control systems
- Mobile In-car Systems - commonly used by Police forces and security forces worldwide
- Portable Systems
- Laptop Systems - up to 2 dual cameras
Talon Software Applications
Talon ANPR can be supplied with a range of application software:
- Policing, Surveillance, Counter-Terrorism
- Imaging
- CCTV Integration
- Access Control
- Car Park Management
- Traffic Management
- Enforcement, Tolling, Congestion Charging
- Bespoke
Due to a policy of continued product development, NDI Recognition Systems Ltd reserves the right to alter or amend any published specifications without notice.
