Survision LPR Cameras

Let's be accurate about LPR accuracy

Most LPR providers talk about 99%+ Accuracy level but we all know this is not so easy

First, what does “LPR Accuracy” mean?

Accuracy level in license plate recognition (LPR) refers to the percentage of correctly recognized license plates out of the total number of license plates captured by the system. 

In LPR, high accuracy is essential to ensure the lowest levels of errors and false readings, which could lead to incorrect information, customer complaints, higher operational costs and potential legal issues.

However, 100% accuracy is a goal worth reaching since every millimetric advance in this field represents many benefits and savings for operators and integrators.

Not an easy feat 

LPR accuracy level is impacted by an extensive list of very different factors, such as lighting conditions, camera angle and position, font type and size, the distance between the camera and the license plate, Environmental factors and, of course, camera quality.

The 100% accuracy goal is blurred by conditions that make the license plate total surface visually unavailable, for example:

Factors that hinders LPR  from  achieve 100% reading accuracy

Obstruction: Whenever the license plate is damaged, broken, dirty, obscured, glared or obstructed by a foreign object, it will be impossible to read.

Excessive graphics around the plate make it impossible for the LPR system to determine which graphics belong to the license plate and which graphics do not.

Many of these factors are not equipment-related but circumstantial/installation-related, impossible to predict or cover; that is why it is very complex to talk about accuracy level as a feature of the camera itself. 

Despite these difficulties, LPR’s great attractiveness and convenience made operators -not wait- for the 100% accuracy mark as they discovered (many) cases where LPR worked OK even if not all characters (N) have been correctly read; indeed, most of the projects consider validating plates on N-1 (allowing one missing character) or even N-2.

They called it “Fuzzy Logic”, a probabilistic workaround that made LPR useful even when not 100% accurate. Fuzzy Logic approach created “accuracy categories” where N is the top level (more strict and won't accept less than  100% of the characters reading), and N-1 is a secondary level, appropriate for many, useless for others.

Under this approach, it is possible to have different performance profiles on different categories (N, N-1, N-2, etc).

As you can see, far from being a simple number, LPR accuracy is a complex matter, which is why we don’t talk lightly about it and never mention any number in our sales pitch; however, this is a core issue and we have a lot to say about it. 

This is why we decided to share our accuracy scores on real case scenarios, including location, sample size, time of the day, N and N-1 values.

Performance rates of  survision  cameras in Europe

Performance rates of  survision  cameras in Europe

These values (Europe and USA) come from real sites. Each installation can provide different values depending on many factors.

Common Features

All included

Lights, protection and connection are integrated into the LPR Cameras

No LPR Server Needed

LPR is performed in the LPR cameras firmware

No trigger needed

LPR cameras detect and process plates at vehicle speeds as high as 250 kph

AI powered firmware

Neural networks are used to learn from every plate read and increase performance over time

Short & Fast!

The shortest LPR distance (from 5ft!) at the highest reading speed (20ms)

One camera per lane

You do not need more than 1 Survision LPR camera to get LPR working

Performance Warranty

Contractual ensurance of performance or money refund

Supervision Dashboard

Human/Software Supervision tool that certifies installation and monitors performance

Advanced Support

Highly trained, dedicated teams for every project. Quotes in 24 hrs, shipping in 48

Survision Nanopak Totem LPR Camera

The only LPR cameras with performance warranty

Satisfied or refunded!

We ensure a certain range of LPR reading rates that will satisfy your needs, burn it in a contract and then make it true; otherwise we will refund 100% of your payment.

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Contact Survision for questions about LPR Cameras

Have any questions?

Give us a call; we can help. No question is too big. We love to talk about even the smallest details when it comes to LPR. We’ve got answers for you. Our expert team is a great resource for information, just a phone call away.

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