Vehicle Recognition Infra-red

[daubs8]

I have 2 cameras which are zoomed to see registration numbers in and out of a site. I could do with further illumination for night time recognition. Don't know whether to try infra-red first or white light? Anybody any thoughts?? Ta.

[james.wilson]

It depends on your camera.

White light will work with all cameras.

There are special cameras (eg derwent regcam) designed to reliably capture plates in any lighting condition. Using std cameras wont work in all circumstances. Peak white inversion will help but you you need to consider vehicle speed and any effect in available light increasing the shutter speed may have.

James

[daubs8]

It depends on your camera.

White light will work with all cameras.

There are special cameras (eg derwent regcam) designed to reliably capture plates in any lighting condition. Using std cameras wont work in all circumstances. Peak white inversion will help but you you need to consider vehicle speed and any effect in available light increasing the shutter speed may have.

James

Thanks James. It's a Concept Pro VCP451 zoom, data sheet is here:

http://www.videconcctv.net/info_pdf/761_vc...20DATASHEET.pdf

Any further thoughts? Thanks.

[dmitry]

Thanks James. It's a Concept Pro VCP451 zoom, data sheet is here:

http://www.videconcctv.net/info_pdf/761_vc...20DATASHEET.pdf

Any further thoughts? Thanks.

1. White light can blind the driver

2. IR complete with the is low-sensitive camera (more than 50 lux) usually apply to get rid of influence of external extraneous moving light sources (the sun, headlights of the car, shaking lanterns, etc.) which can do patches of light and light number of the car.

At a choice of the inexpensive decision of the characteristic of the camera not so are important, as the chosen foreshortening.

Or you can choose special cameras at which installation it is possible to not pay attention to external conditions - all will be well visible. It just cameras with powerful IR illumination and low sensitivity

[daubs8]

1. White light can blind the driver

2. IR complete with the is low-sensitive camera (more than 50 lux) usually apply to get rid of influence of external extraneous moving light sources (the sun, headlights of the car, shaking lanterns, etc.) which can do patches of light and light number of the car.

At a choice of the inexpensive decision of the characteristic of the camera not so are important, as the chosen foreshortening.

Or you can choose special cameras at which installation it is possible to not pay attention to external conditions - all will be well visible. It just cameras with powerful IR illumination and low sensitivity

Thanks Dmitry. I know you tried with your English but not quite clear enough for me?

[dmitry]

Thanks Dmitry. I know you tried with your English but not quite clear enough for me?

You are wellcome. I didn't try to surprise you, I told you my opinion. To be exact it's the theory which we embody in practice more than 7 years.

[daubs8]

Ahh right the theory, thanks!

[dmitry]

Ahh right the theory, thanks!

Wellcome. We use this one http://resource.boschsecurity.com/document...T5005531019.pdf

and this one http://products.boschsecurity.co.uk/en/GB/...a44c657be14f93e

and don't asked about illumination

[daubs8]

Wellcome. We use this one http://resource.boschsecurity.com/document...T5005531019.pdf

and this one http://products.boschsecurity.co.uk/en/GB/...a44c657be14f93e

and don't asked about illumination

Thanks again, however the only price I can find for this camera is $1115.00!! I don't need it to be that specialist so i'll have another think.

[dmitry]

Thanks again, however the only price I can find for this camera is $1115.00!! I don't need it to be that specialist so i'll have another think.

Yes, a real price high. For this reason I spoke you, that in your situation the greater role is played with a correct foreshortening (an arrangement of the camera). Can you send the scheme of a situation? Drowing which will show: the sizes of road (where it's necessary to fix numbers of cars), the basis on which you plan to install the camera (a wall, a stage, a column or something else), external light sources (lanterns in the street, illumination of buildings, etc.). Then conversation will be more correct and we can give you exact recommendations.