ANPR and registration letters

Isle_of_Wight_man

This is a question to those who may know the answer!

There are a lot of people caught by ANPR and entering their registration numbers incorrectly, a O for 0 for instance.

The government standard for number plate formats, document INF104, gives an example of the size and shape of letters. In the document the O and 0 are identical.

I have looked at cars on the road and can not tell the difference.

A typical reg mark for a car registered in Cardiff could be CO06 ODA,  (hope it's not yours!), if the actual letter O and number 0 are the same shape. How does an ANPR camera know it's been typed incorrectly transposing those two characters?

Ralph-y

they can't ........

there are systems that can flag up miss matches between ANPR and what drivers key in ....

but why would they do that ....

less profit

Ralph

Isle_of_Wight_man

Fair comment!

Fruitcake

ANPR scameras are not fit for use and have been banned by the UK Government for use in council and local authority car parks. Since parking scammers are unregulated they deliberately use them because their flaws generate income.

The answer to your question is the scamera systems can't tell the difference between an O and a zero, but the system "should" be programmed so that entering an incorrect VRM on a keypad is not possible unless a vehicle with a matching VRM is actually present.

The camera takes a digital image that is then converted by an OCR programme to text and numbers, but it can easily be fooled by dirt, cracks, rusty screws, as well as light and shade. 
In addition, the computer programme is designed in my opinion to deliberately disregard anything other than the first and last images. If two or visits are made on the same day, aka a double dip, it will deliberately record it as one long one and bingo, a PCN for an overstay is generated, here's the photographic proof your honour.

It's a scam, and that really is all there is to it. ANPR is just one of the tools the scammers use to scam.