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Re: Rép. : [K12OSN] Capturing s napshots from camera



I like your thinking :-)

Brian

Doug Simpson wrote:
But with the dogs, there won't be any "evidence". The cars will leave the things laying around. . .They'll be GONe with the dog method!

DS

Doug Simpson
Technology Specialist
De Queen Public Schools
De Queen, AR
simpsond leopards k12 ar us
"A Dollar Saved is a Dollar Earned"


Brian Chivers <brian portsmouth-college ac uk> 11/6/2008 1:15 PM >>>
Nice idea, I was going for Radio Controlled car with pointy sticks !!!

Rob Owens wrote:
I've got an idea.  Why don't you fence the field in and put some dogs in
there.  Then the geese will be easy to count -- because there won't be any!

-Rob

Brian Chivers wrote:
:-) I agree but the bosses want so I have to so that I've tried.

What I've got working at the mo is a WinTV card (bt878 based chipset)
with a CCTV camera with a nice lens on.

I'm using I'm running Ubuntu 8.10 with XAWTV + STREAMER, I've then got a
cron job setup that takes a snapshot and scp's it to one of our other
servers. The bosses can then via with and do with it what they like :-)

Only little issue I had was that xawtv will has to run to initialise
that card so what I've done is got the box to autologin and run XAWTV
this allows the cron job to run OK. The screensaver is set to 30 seconds
so this stop anyone fiddling & it's also locked away in a store cupboard
so hopefully it'll be OK for this year.

The best part is that we've got to do the survey I think it's 8 times a
month for the next FIVE years !!!! That's going to be a lot of jpeg's
they have to look through.

It's a bit of a dirty hack but it gives me some breathing space to look
at webcams that'll do the job better & easier :-)

Thanks for all the pointers to the webcams, I've stored these away to
look at and hopefully buy a few to play with when they "bean counters"
aren't looking
Brian

Guy-Michel Lessard wrote:
Youre really screwed with this. OK there you go, either ou get a
quality webcam (glass zoom lens, ...) or a capture card and a cctv
camera. I still think that the webcam would be the easy way.

Brian Chivers <brian portsmouth-college ac uk> 2008-11-05 05:26:17

Sorry, I was a little "embarrassed" to say what I actually need it to
do :-)

The lawyers have looked into this & it's them that have told us we'd
have to do it :-/

Brian

Doug Simpson wrote:
See? If you had been just a tad more explicit as to what you were
looking to be looking at, we would have saved a lot of time, here. . .
Is there any indoor location with a clear view of that field?  Some
regular webcams come with software that will sit there and record, but
only capture any data when there is actual activity. Kinda like a
motion-activated video recorder. Had a good sized hard drive in an
olod laptop connected to a decent quality webcam with the
motion-activated recorder and there ya go. You should be able to see
geese in even an inexpensive webcam unless the field is a quarter mile
away or something. . .
DS

Doug Simpson
Technology Specialist
De Queen Public Schools
De Queen, AR
simpsond leopards k12 ar us "A Dollar Saved is a Dollar Earned"


Brian Chivers <brian portsmouth-college ac uk> 11/4/2008 12:39 PM
OK I'll give you all little more background and it might explain my
need
for quality :-)

You assumed that we're looking at people :-) we need to count GEESE yes
that's right we need to know how many geese roughly are using our field
before we are allowed to build a new college. These are  Brent geese
that come over from Canada to feed etc & the local nature people have
said we need to have numbers before we can go ahead, they've said that
snapshots would be OK.

It's ridiculous that geese are stopping us build a new College but it's
taken almost 3 years to get to this point !!!!

Brian

Doug Simpson wrote:
You aren't needing to read the labels on their clothes. . . you
just need to see if there is someone *there*. . .
"Quality" isn't as much of a factor as "the presence of" if you are
using this for the described purpose.
DS

Doug Simpson
Technology Specialist
De Queen Public Schools
De Queen, AR
simpsond leopards k12 ar us "A Dollar Saved is a Dollar Earned"


 >>>>> Brian Chivers <brian portsmouth-college ac uk> 11/4/2008
7:54 AM >>>
       >> Problem is that the webcams don't have the sort of
lens that we'd need.
I'm looking at a package called "webcam" that's part of xawtv at
the mo to see if that'll do it.
Brian

Guy-Michel Lessard wrote:
 >>> My gut feeling is do'nt touch that, get a Linux compatible
webcam. It
will be a lot less hassle. I'm sure there will be members here
that can
suggest easy to get compatible webcams.


 >>> Brian Chivers <brian portsmouth-college ac uk> 2008-11-04
06:47:24 >>>
I've been asked to setup a camera over looking our College's playing
field to capture an image every
30 minutes so we can see how much it is being used.

I have a camera with that has a composite video output that I'd
like to
use and a video input card
(not sure if it linux compatible, if not I'll get one that is *grin*)
but I'm not sure what software
to use to do this.

Not worried about motion sensing just need a jpg or something every X
minutes

Does anyone do this ? Any ideas or pointer where to start.

Thanks
Brian Chivers
Portsmouth College


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