Buckinghamshire CC ANPR cameras

Clive D.W. Feather clive at davros.org
Tue Feb 7 17:52:48 GMT 2012

Peter Tomlinson said:
> You should "always get the same subset of the registration", but off the 
> motorways there are a lot of cars (and even some vans) with incorrectly 
> formatted plates [1] that may well confuse.

It doesn't matter. What I said was:

>> *for a
>> given car* you'll always get the same subset of the registration. It might
>> be a different subset for different cars, but that's irrelevant.

If one car gets characters 2 to 6 while another gets characters 3 to 7 or
even 3 to 5, you still get a consistent string for each car that you can
use to see, with reasonable accuracy, when the same car turns up further
along the road.

Clive D.W. Feather          | If you lie to the compiler,
Email: clive at davros.org     | it will get its revenge.
Web: http://www.davros.org  |   - Henry Spencer
Mobile: +44 7973 377646

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