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 !
B+W security cameras tend to have lots of manual features. Even on my elmo presentation camera I can turn off all the auto mechanisms.
I've been happy dealing with elmo as a company, one of the few does not does make you agree to a license in order to get their serial control protocol.
.b.
Alexandre Quessy 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 !
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@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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Hi all, Thanks for the tips, Chris and Ben.
2007/12/21, chris clepper cgclepper@gmail.com:
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.
I think that skin tone smoothing is possible using shaders. ( http://www.cycling74.com/forums/index.php?rid=0&S=322adce409a72e135b36d1... ) I think such smoothing is temporal, right ? Anyone has a example of such image enhancement ?
Thanks !
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Alexandre Quessy -
B. Bogart -
chris clepper