Re: Newbie Question- debian & secuirty cameras
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On Sun, Jul 28, 2002 at 08:39:13PM +0300, Johan Ehnberg wrote:
> But if you are using digital cameras, this is quite easy. The ones we
> use(d) sent one picture every 1/X seconds. This picture could be
> automagically stored as avi, jpg, bmp... The software used was runnig on
> M$, though, and required a special card with X cables to the cameras.
Digital cameras are suboptimal for security work (as in, fscking
unsable). I used to have to deal with digital cameras before my
employer got smart and deployed standard cameras.
If you need to get close in on someone from the security tapes with an
analog camera, you can get fairly close in from any distance with a
little skill. It'll be slightly fuzzy the farther out you are, but
you can do it.
If you need to get close in from the tapes with a digital camera, it
just looks all blocky and blurred out like suspects on COPS, being
basically unusable.
If you store your analog camera input digitally, be absolutely sure
the image quality you're saving to disk is at least slightly better
than the video tape to minimize lossage (though I would still
reccommend saving a copy to video in case you can't get the image you
need from the disk).
(Hmm, the fact that I work in the private security inudstry now seems
to be paying off on the list...)
- --
Baloo
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