Rép. : [K12OSN] Capturing snapshots from camera

Rob Owens rob.owens at biochemfluidics.com
Thu Nov 6 12:22:33 UTC 2008 

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 at 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 at leopards.k12.ar.us
>> > "A Dollar Saved is a Dollar Earned"
>> >
>> >
>> >>>> Brian Chivers <brian at 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 at leopards.k12.ar.us
>> >> "A Dollar Saved is a Dollar Earned"
>> >>
>> >>
>> >>  >>>>> Brian Chivers <brian at 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 at 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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>> >>>
>> >>>                 the views of Portsmouth College  >>>
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>>
>>                 the views of Portsmouth College  
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>    The views expressed here are my own and not necessarily
> 
>                the views of Portsmouth College   
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