On Sat, Dec 5, 2009 at 18:00, Eben King <eben01@verizon.net> wrote:
> Part 3 of 3.
>
> ---------- Forwarded message ----------
> Date: Thu, 3 Dec 2009 17:23:28 -0500 (EST)
> From: Eben King <eben01@verizon.net>
> To: SLUG Mailing List <slug@nks.net>
> Subject: webcam image control
>
> Also, it has four LEDs on the front. Is there any way to turn them on?
>
I did not see part 1, but those LED's are probably infrared and if it works like
the ones I have, they turn on and off based on the amount of ambient light,
at night depending on where they are spectrum wise you may be able to
see them if they are the 720nm variety, over even the 800nm ones, but if
they are the 900nm ones you will not see a thing. The previous visibility
info also depends on your red end sensitivity, so you may or may not be
able to see the 700 and 800nm. If the camera can see things in a dark room
indeed they are working. Also if you are setting in a lit room but the light
is not too strong you may have sort of a "blueish" tinge which is caused
by the LED's being on and the camera seeing the IR, which it shows as
sort of a very light blue or almost white color.
As to capture I would probably start out with VLC, the good old swiss
army tool of video... I have used it to capture video off of USB cams, I am
assuming that is what you have. Most of what I have around here are
IP cams, if you want to take a look at my security cam system you can
go to the following address:
www.wchast.com/zm
Login = guest
pw = guest
and take a look at some IP cams. I do not have any infrared on them so
those that have no lighting will appear dark or you will only see any light
sources in the FOV.
What are you wanting to do with the cam???
-- Chuck Hast -- KP4DJT -- To paraphrase my flight instructor; "the only dumb question is the one you DID NOT ask resulting in my going out and having to identify your bits and pieces in the midst of torn and twisted metal."----------------------------------------------------------------------- This list is provided as an unmoderated internet service by Networked Knowledge Systems (NKS). Views and opinions expressed in messages posted are those of the author and do not necessarily reflect the official policy or position of NKS or any of its employees.
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