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-   -   50 mph average speed check cameras (http://forums.sv650.org/showthread.php?t=119137)

Dappa D 09-10-08 02:46 PM

Re: 50......Average speed check camera;s
 
nah...id of noticed those legs;)

G 09-10-08 02:49 PM

Re: 50......Average speed check camera;s
 
Quote:

Originally Posted by Dappa D (Post 1649268)
was your "friend" flying thru the m1 yesterday....sort of miltom keynes way?? if so your friend may have passed me......!!!!!! (went on a nice 350 mile round trip to scrub in tyres!!!

it was the m1 that got me thinking!

I doubt he would be doing just 80/90 tbh

Fancy scrubbing tyres in on a motorway you crazy fool

BillyC 09-10-08 02:49 PM

Re: 50......Average speed check camera;s
 
Just to extend my point a little further, whether or not you choose to be interested. It's particularly from a computing and technology aspect.

Indeed, the guy with 39 points was not necessarily "camera'd" for each office, but an overall case was put together, which included video evidence.

A SPECS camera, like it or not, is a video camera. What makes up the SPECS system, is simply the artificial intelligence to read the number plate on an approaching vehicle, and compare it with the timing of similarly interpretted plates at previous camera points. The product of this data is a speed calculation, and where appropriate a PCN is issued.

I promise you, the AI can and will be adapted to recognise unidentifiable vehicles between these camera points, match them up across the points, perform the appropriate calculations, and flag them to an operator. If facial recognition software is being used in Airports, I assure you it's considerably easier for vehicle recognition to be put in place on our roads - it only has to compare a few vehicles a few seconds apart.

The SPECS system doesn't necessarily come into effect here at all... it's the operator that makes the call of compiling the video evidence from points A and B, the knowledge of distance X between them, and time Y to travel between the two, and finally Z, the speed that vehicle was doing. Some more footage to identify the vehicle or driver further... PCN on your doorstep.

It's not difficult, it could be done now. We're lucky that it isn't, maybe, yet.

Many thanks to those responsible for voting in Big Brother, I mean New Labour, in 1997.

custard 09-10-08 02:51 PM

Re: 50......Average speed check camera;s
 
Quote:

Originally Posted by Woz (Post 1649166)
Like sending a rozzer on an unmarked bike to tail you dangerously for miles and miles? :D


yup look out for the really hard to spot one in herts.

rider wearing police issue leathers and white helmet on a black BMW with mahoosive siren bolted on to the side....


reeeeeal subtle! :)

Dappa D 09-10-08 03:11 PM

Re: 50......Average speed check camera;s
 
Quote:

Originally Posted by G (Post 1649325)
I doubt he would be doing just 80/90 tbh

Fancy scrubbing tyres in on a motorway you crazy fool

weather was good....had done 60 or so miles on them already...can start increasing my lean angles now:D

Baph 09-10-08 03:15 PM

Re: 50 mph average speed check cameras
 
I have a resolution for SPECs when I'm in the car...

Get a little closer to the vehicle in front for a couple of seconds when passing one of the cameras. :smt047

I can however confirm that the ones on the M56 can detect single lane changes, but not when you cross two lanes (ie, 1-3 or 3-1). I've been NIP'd in the past for a single change. Not yet for double.

Dappa D 09-10-08 03:17 PM

Re: 50 mph average speed check cameras
 
Quote:

Originally Posted by Baph (Post 1649380)
Get a little closer to the vehicle in front for a couple of seconds when passing one of the cameras. :smt047

.

i thought of that..plenty of mahoooosive lorries.....little bike,,,,tuck in....job done.....

(would like to reiterate its just conversation i dont particularly wanna go risking my license for an extra few mph!)

muffles 09-10-08 03:20 PM

Re: 50......Average speed check camera;s
 
I'm not sure what your background is so I don't know whether yours is an authoritative opinion ;) but a few questions crop up for me here:

Quote:

Originally Posted by BillyC (Post 1649327)
A SPECS camera, like it or not, is a video camera. What makes up the SPECS system, is simply the artificial intelligence to read the number plate on an approaching vehicle, and compare it with the timing of similarly interpretted plates at previous camera points. The product of this data is a speed calculation, and where appropriate a PCN is issued.

I promise you, the AI can and will be adapted to recognise unidentifiable vehicles between these camera points, match them up across the points, perform the appropriate calculations, and flag them to an operator. If facial recognition software is being used in Airports, I assure you it's considerably easier for vehicle recognition to be put in place on our roads - it only has to compare a few vehicles a few seconds apart.

A SPECS camera is a video camera, yes, but that doesn't mean it is recording constantly. All it has to do is identify each plate as it comes through, and record the registration on the system at that point. It doesn't need to have an actual picture - although in fairness it probably *will* take a picture at each set of cameras, for the purposes of producing evidence for a conviction later on.

In terms of the AI...now, I am not quite so sure that this will be how it works...
Just to give background, I work in IT & have done for about 6 years now, but my limit of AI knowledge is what I learnt at uni - so by no means an expert, but a little knowledge. Anyway, what I am thinking is that, taking your facial recognition example, this should be based on a 'template' of a face - i.e. the AI scans each frame looking for areas that match the template with a certain confidence level (throw a bit of statistics in there for good measure eh).

Now applying that to the ANPR-style system, it has to recognise what it's looking at in some form - it can't just say "oh, moving pixels, must be a vehicle" - I suspect it's actually very difficult to identify things when, crucially, you don't know what you're looking for. Number plates follow a certain 'template' so can use a system similar to the one I described for facial recognition.
The AI will never be able to say 100% between 2 frames that it is the same vehicle, as the pixels involved will (for all intents and purposes) always be different to some degree. It will give an answer in terms of confidence levels.
Basically I am saying that I think the recognition of an arbitrary object is very difficult and unlikely to be something it can do. If it had a template, that would be a different matter, but it would have to be a very generic template to match a bike, a car as it has to match all bikes, cars.

Quote:

Originally Posted by BillyC (Post 1649327)
The SPECS system doesn't necessarily come into effect here at all... it's the operator that makes the call of compiling the video evidence from points A and B, the knowledge of distance X between them, and time Y to travel between the two, and finally Z, the speed that vehicle was doing. Some more footage to identify the vehicle or driver further... PCN on your doorstep.

Now this does indeed make sense...but depends on the system alerting an operator that there is 'something' to look at (see recognition, above) and the recording of said 'something' (again see above).

I get the feeling we need someone who works in AI recognition algorithms (as opposed to other types of AI that are not relevant) or similar to answer this :D but a good discussion about the algorithms and architecture behind the systems, for certain. :thumleft:

Baph 09-10-08 03:21 PM

Re: 50 mph average speed check cameras
 
Quote:

Originally Posted by Dappa D (Post 1649383)
(would like to reiterate its just conversation i dont particularly wanna go risking my license for an extra few mph!)

Should one of the said vehicles stand on the brakes, you also don't want to loose your life!

Dappa D 09-10-08 03:27 PM

Re: 50 mph average speed check cameras
 
Quote:

Originally Posted by Baph (Post 1649391)
Should one of the said vehicles stand on the brakes, you also don't want to loose your life!


oooo no....not tuck in behind it....thats just askin for trouble....but the angle the cameras are at...if u were too the left of a large lorryabout a foot away say....dont think it would pick u out.....just observation i may be wrong...


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