[PD] OT: video camera for detection

chris clepper cgclepper at gmail.com
Sat Dec 22 03:07:09 CET 2007

I have tested quite few models of security cams and JVC makes some of the
better ones.  On most of these models you can disable AGC and get a standard
fixed or zoom lens.  I would recommed the auto iris unless you have 100%
control of the lighting.

Don't expect a great image compared to a DV camera since the security ones
have none of the DSP for edge enhancement, skin tone smoothing and so on (a
lot goes on in those things).  Using a model with S-video output will reduce
the color artifacts.

On Dec 21, 2007 3:52 PM, Alexandre Quessy <listes at sourcelibre.com> wrote:

> Hi,
> I am shopping for a camera or an installation. :)
> Detection (pix_blob, etc.) requires a camera with a pretty high
> resolution, and I also need to be able to disable auto gain control
> (AGC) and auto iris control (AIC). I guess disabling the auto white
> balance is a good idea too. I looked at matco.com, which has pretty
> afordable cameras. Their SX-920C-HR looks pretty good. It has 480 TV
> lines, which gives more than 720x480 pixels. See
> http://matco.com/pro-camera-1.htm and click on "Technical details"
> under that part number to see the little datasheet.
> I am afraid I cannot disable AGC, though at least I can use a lens
> which has no auto iris. Is that correct ? Do you guys think there is a
> way I can disable that auto iris control ? Otherwise, anyone has a
> camera to suggest ? Thanks a lot !
> --
> Alexandre Quessy
> http://alexandre.quessy.net
> http://www.puredata.info/Members/aalex
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