OT: Tracking an object
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Posts: 46,084
Semi OffTopic.
But what is/are the perfered method of tracking a moving object.
Like having a survailnce cam follow a person walking by? IR?
But what is/are the perfered method of tracking a moving object.
Like having a survailnce cam follow a person walking by? IR?
Comments
so the camera will follow automaticly.
At the time it was a big deal so what was written on it was sketchy.
I know it may not be much help but at least it is a place where it is
being used. U might give it a check.
and try out object tracking home page [noparse]:)[/noparse]
http://www-cv.mech.eng.osaka-
u.ac.jp/research/tracking_group/tracking.html
cheers
serdar
--- In basicstamps@y..., "anode505" <anode505@y...> wrote:
> Semi OffTopic.
>
> But what is/are the perfered method of tracking a moving object.
> Like having a survailnce cam follow a person walking by? IR?
either IR or heat that is created from a oject or
person?
--- serdar_toughbeard <serdar_a@k...> wrote:
> Hollywood was using, if I remember it right, rf
> modules on the actors
> so the camera will follow automaticly.
>
> At the time it was a big deal so what was written on
> it was sketchy.
> I know it may not be much help but at least it is a
> place where it is
> being used. U might give it a check.
>
> and try out object tracking home page [noparse]:)[/noparse]
>
> http://www-cv.mech.eng.osaka-
> u.ac.jp/research/tracking_group/tracking.html
>
> cheers
>
> serdar
> --- In basicstamps@y..., "anode505" <anode505@y...>
> wrote:
> > Semi OffTopic.
> >
> > But what is/are the perfered method of tracking a
> moving object.
> > Like having a survailnce cam follow a person
> walking by? IR?
>
>
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body yet I think you should. (well at least in theory it sounds
reasoanble...) but I would nt know how you can do it...
Serdar
--- In basicstamps@y..., Gene Shults <ebs1955@y...> wrote:
> Question: Is there not a way to track a object with
> either IR or heat that is created from a oject or
> person?
> --- serdar_toughbeard <serdar_a@k...> wrote:
> > Hollywood was using, if I remember it right, rf
> > modules on the actors
> > so the camera will follow automaticly.
> >
> > At the time it was a big deal so what was written on
> > it was sketchy.
> > I know it may not be much help but at least it is a
> > place where it is
> > being used. U might give it a check.
> >
> > and try out object tracking home page [noparse]:)[/noparse]
> >
> > http://www-cv.mech.eng.osaka-
> > u.ac.jp/research/tracking_group/tracking.html
> >
> > cheers
> >
> > serdar
> > --- In basicstamps@y..., "anode505" <anode505@y...>
> > wrote:
> > > Semi OffTopic.
> > >
> > > But what is/are the perfered method of tracking a
> > moving object.
> > > Like having a survailnce cam follow a person
> > walking by? IR?
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@y...
> > from the same email address that you subscribed.
> > Text in the Subject and Body of the message will be
> > ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to
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> >
> >
>
>
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this. An example is the IR air-to-air missile. Most of the techniques
involve physically scanning a small IR array (sometimes a linear array using
something like a conical scan) and slewing or adjusting the bore-sight to
walk the maximum signal to a certain point on the array, not an
insignificant amount of processing required. Others use a larger fixed
focus 2D IR array and adjust the boresight to put the maximum signal at a
certain point on the array. With a single detector the only way to get it
to work is to have some sort of off-axis scanner. That will require a
significant amount of physical hardware and good integration between the
hardware and the processor.
Neither is a "weekend" project, but certainly worth pursuing. If you know
the possible movements are only 2D, your problem is much simpler, and you
might be able to do it with as few as 2 sensors in a overlapping fan shape.
track the point of equal signal strength or return between the two sensors.
Original Message
From: serdar_toughbeard [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=IK0UF5xkRZ5RkGJVZM9OG4UweGjnajvgBlgsw_AMTkOP3xRNYRbP_t5-uBxE22KU41HjxIbZiGik0M0]serdar_a@k...[/url
Sent: Saturday, November 16, 2002 2:46 AM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Re: OT: Tracking an object
Well if you can find a way to isolate the other heat sources from the
body yet I think you should. (well at least in theory it sounds
reasoanble...) but I would nt know how you can do it...
Serdar
--- In basicstamps@y..., Gene Shults <ebs1955@y...> wrote:
> Question: Is there not a way to track a object with
> either IR or heat that is created from a oject or
> person?
> --- serdar_toughbeard <serdar_a@k...> wrote:
> > Hollywood was using, if I remember it right, rf
> > modules on the actors
> > so the camera will follow automaticly.
> >
> > At the time it was a big deal so what was written on
> > it was sketchy.
> > I know it may not be much help but at least it is a
> > place where it is
> > being used. U might give it a check.
> >
> > and try out object tracking home page [noparse]:)[/noparse]
> >
> > http://www-cv.mech.eng.osaka-
> > u.ac.jp/research/tracking_group/tracking.html
> >
> > cheers
> >
> > serdar
> > --- In basicstamps@y..., "anode505" <anode505@y...>
> > wrote:
> > > Semi OffTopic.
> > >
> > > But what is/are the perfered method of tracking a
> > moving object.
> > > Like having a survailnce cam follow a person
> > walking by? IR?
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@y...
> > from the same email address that you subscribed.
> > Text in the Subject and Body of the message will be
> > ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to
> > http://docs.yahoo.com/info/terms/
> >
> >
>
>
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[noparse][[/noparse]Non-text portions of this message have been removed]
usually feed in the cameras into computers systems and let the computer control
the tracking. Very expensive. It is refered to as "DPTZ" or Digital pan tilt
zoom. Every watch Televised Sports? A good example of this is (in the USA) the
NFL games. They put a yellow line across the field repesenting something but as
the cameras move so does the line. "Its a digital world out their."
Using an RF tag and trangulation of the signal their by pin-pointing its
location would be an other way. Remember this is how you locate a hidden
transmitter or how the police find Cell phone callers (Pre GPS).
I like the IR Idea. You would need a IR sensitive camera ( i.e. one of those
"HEAT VISION" types) and software to mask out the background noise, then
determine which direction the object was moving and them move the camera to keep
it centered. Both the IR and VIsula cameras must be tied together with a
Pan-Tilt-Zoom features. You could do this with a color matching scheam as well.
The latter would mimic the human optical process more.
If you put an IR transmitter on the object that flashed at a certian rate and
intensity i.e. a battery and a flashing IR LED. You could use IR
photo-detectors to determine the location and distance from each detector. You
will get a signal that veries with distance from detector of the flasshing IR
source and just use a frequency to vlotage converter to determing it it is the
object you want or not. Their-by allowing you to track the object.
ioopn
serdar_toughbeard <serdar_a@k...> wrote:Well if you can find a way to
isolate the other heat sources from the
body yet I think you should. (well at least in theory it sounds
reasoanble...) but I would nt know how you can do it...
Serdar
--- In basicstamps@y..., Gene Shults wrote:
> Question: Is there not a way to track a object with
> either IR or heat that is created from a oject or
> person?
> --- serdar_toughbeard wrote:
> > Hollywood was using, if I remember it right, rf
> > modules on the actors
> > so the camera will follow automaticly.
> >
> > At the time it was a big deal so what was written on
> > it was sketchy.
> > I know it may not be much help but at least it is a
> > place where it is
> > being used. U might give it a check.
> >
> > and try out object tracking home page [noparse]:)[/noparse]
> >
> > http://www-cv.mech.eng.osaka-
> > u.ac.jp/research/tracking_group/tracking.html
> >
> > cheers
> >
> > serdar
> > --- In basicstamps@y..., "anode505"
> > wrote:
> > > Semi OffTopic.
> > >
> > > But what is/are the perfered method of tracking a
> > moving object.
> > > Like having a survailnce cam follow a person
> > walking by? IR?
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@y...
> > from the same email address that you subscribed.
> > Text in the Subject and Body of the message will be
> > ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to
> > http://docs.yahoo.com/info/terms/
> >
> >
>
>
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> Yahoo! Web Hosting - Let the expert host your site
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[noparse][[/noparse]Non-text portions of this message have been removed]
> Semi OffTopic.
>
> But what is/are the perfered method of tracking a moving object.
> Like having a survailnce cam follow a person walking by? IR?
Hi! I've wasted many, many hours looking for information on tracking
systems and I've hit the same wall. It seems that complex imaging
systems are used in most cases. In other cases, it's military
information that they are not giving out!
I've been experimenting with a low-tech approach that works for my
application:
My house has been infested with roof-roaches (you know, pigeons).
They drop dung on everything, plop down hard on my roof, and make
obnoxious noises all day long. That's when I designed an automated
BB-gun turret that I mounted at the edge of my roof. The BS2 handles
everything just fine. In fact, as soon as I get some more time, I'm
going to put up a web page with build information.
Anyway, I played around with IR and even tried using a rotating laser-
pointer as a scanner with no success. It was only then that I
realized my primary annoyance could be a point of targeting: that
nasty woop-woop sound that they make. I created a crude sensor array
out of a bunch of web-mic's that I had laying around. The servos aim
the BB-gun in the direction of the strongest audio signal. The
problem I'm currently having is that it aims toward ANY noise, so I'm
trying to learn about sound processing to find a way to filter out
any sound that doesn't come close to the pigeon noise. I also want
to do it without a PC being involved. I like the idea of stand-alone
projects, otherwise I would just use a PC to begin with. What fun
would that be? An interesting side-effect of this is that it tries
to track the sound of flapping wings when they fly by. It reminds me
of a sci-fi movie where anti-air guns are targeting planes. It's too
cool. I mounted an old web-cam on the turret and hooked it to my VCR
so I could watch tracking attempts. It's usually pathetic and clumsy-
looking, but still interesting.
In most cases, the pigeons get scared at the sudden whine of the
servos and movement of the turret, so the gun rarely has to fire.
The birds are scared, they shut up, problem solved... [noparse]:)[/noparse] Even when
it does fire, the aiming system is so crude that the birds never get
hit. It just adds an exclaimation mark to the whining servo's
statement of "GET OUT OF HERE!"
It's too bad that after all of this effort, those stupid birds just
don't learn. Now I have the noise of the turret on top of the
continuous bird noises. Hmmm... Maybe I should turret mount the
innards of a microwave oven to cook the suckers?!? JUST KIDDING!!!
-Derek
project was for a lawnmower (YES! i'm lazy)Dual freq with send/recv
for more preicision. Hmmmm. (though might need to be a blower now,
but thats what the turbo-jet engine project is for [noparse]:)[/noparse] Just put a
beacon on it at a peticular freq and track it. Long term I'm looking
at a 'fits-all' tracking either IR or something else like image-
change.
--- In basicstamps@yahoogroups.com, "Derek Schwartz <junkmail@B...>"
<junkmail@B...> wrote:
> --- In basicstamps@yahoogroups.com, "anode505" <anode505@y...>
wrote:
> > Semi OffTopic.
> >
> > But what is/are the perfered method of tracking a moving object.
> > Like having a survailnce cam follow a person walking by? IR?
>
> Hi! I've wasted many, many hours looking for information on
tracking
> systems and I've hit the same wall. It seems that complex imaging
> systems are used in most cases. In other cases, it's military
> information that they are not giving out!
>
> I've been experimenting with a low-tech approach that works for my
> application:
>
> My house has been infested with roof-roaches (you know, pigeons).
> They drop dung on everything, plop down hard on my roof, and make
> obnoxious noises all day long. That's when I designed an automated
> BB-gun turret that I mounted at the edge of my roof. The BS2
handles
> everything just fine. In fact, as soon as I get some more time,
I'm
> going to put up a web page with build information.
>
> Anyway, I played around with IR and even tried using a rotating
laser-
> pointer as a scanner with no success. It was only then that I
> realized my primary annoyance could be a point of targeting: that
> nasty woop-woop sound that they make. I created a crude sensor
array
> out of a bunch of web-mic's that I had laying around. The servos
aim
> the BB-gun in the direction of the strongest audio signal. The
> problem I'm currently having is that it aims toward ANY noise, so
I'm
> trying to learn about sound processing to find a way to filter out
> any sound that doesn't come close to the pigeon noise. I also want
> to do it without a PC being involved. I like the idea of stand-
alone
> projects, otherwise I would just use a PC to begin with. What fun
> would that be? An interesting side-effect of this is that it tries
> to track the sound of flapping wings when they fly by. It reminds
me
> of a sci-fi movie where anti-air guns are targeting planes. It's
too
> cool. I mounted an old web-cam on the turret and hooked it to my
VCR
> so I could watch tracking attempts. It's usually pathetic and
clumsy-
> looking, but still interesting.
>
> In most cases, the pigeons get scared at the sudden whine of the
> servos and movement of the turret, so the gun rarely has to fire.
> The birds are scared, they shut up, problem solved... [noparse]:)[/noparse] Even
when
> it does fire, the aiming system is so crude that the birds never
get
> hit. It just adds an exclaimation mark to the whining servo's
> statement of "GET OUT OF HERE!"
>
> It's too bad that after all of this effort, those stupid birds just
> don't learn. Now I have the noise of the turret on top of the
> continuous bird noises. Hmmm... Maybe I should turret mount the
> innards of a microwave oven to cook the suckers?!? JUST KIDDING!!!
>
> -Derek
This sounds like a very cool idea, I hate the little feathered s*ds
too. You might want to have a look at these guys,:
http://www-2.cs.cmu.edu/~cmucam/
If the military have it, then the universities will also have it,
just smaller and more reliable!
I have contacted them regarding the 3D aspect of the tracking
(unfortunately the pigeons can fly!) and they said to use an off
board controller, such as a basic stamp, that can cope with serial
commands. A bit of software later and it will track either the
colour of the birds or their movement (if I am not mistaken).
Don't forget to use an infrared filter on the lens as the daylight
will play havoc with the red band!
All the info is on the web site and you can buy them from several
places too!
Hope this helps
Andy.
--- In basicstamps@yahoogroups.com, "Derek Schwartz <junkmail@B...>"
<junkmail@B...> wrote:
> --- In basicstamps@yahoogroups.com, "anode505" <anode505@y...>
wrote:
> > Semi OffTopic.
> >
> > But what is/are the perfered method of tracking a moving object.
> > Like having a survailnce cam follow a person walking by? IR?
>
> Hi! I've wasted many, many hours looking for information on
tracking
> systems and I've hit the same wall. It seems that complex imaging
> systems are used in most cases. In other cases, it's military
> information that they are not giving out!
>
> I've been experimenting with a low-tech approach that works for my
> application:
>
> My house has been infested with roof-roaches (you know, pigeons).
> They drop dung on everything, plop down hard on my roof, and make
> obnoxious noises all day long. That's when I designed an automated
> BB-gun turret that I mounted at the edge of my roof. The BS2
handles
> everything just fine. In fact, as soon as I get some more time,
I'm
> going to put up a web page with build information.
>
do complete. Or even now so we can see what you do
have done. This would be a very useful project. Thanks
--- "Derek Schwartz <junkmail@B...>"
<junkmail@B...> wrote:
> --- In basicstamps@yahoogroups.com, "anode505"
> <anode505@y...> wrote:
> > Semi OffTopic.
> >
> > But what is/are the perfered method of tracking a
> moving object.
> > Like having a survailnce cam follow a person
> walking by? IR?
>
> Hi! I've wasted many, many hours looking for
> information on tracking
> systems and I've hit the same wall. It seems that
> complex imaging
> systems are used in most cases. In other cases,
> it's military
> information that they are not giving out!
>
> I've been experimenting with a low-tech approach
> that works for my
> application:
>
> My house has been infested with roof-roaches (you
> know, pigeons).
> They drop dung on everything, plop down hard on my
> roof, and make
> obnoxious noises all day long. That's when I
> designed an automated
> BB-gun turret that I mounted at the edge of my roof.
> The BS2 handles
> everything just fine. In fact, as soon as I get
> some more time, I'm
> going to put up a web page with build information.
>
> Anyway, I played around with IR and even tried using
> a rotating laser-
> pointer as a scanner with no success. It was only
> then that I
> realized my primary annoyance could be a point of
> targeting: that
> nasty woop-woop sound that they make. I created a
> crude sensor array
> out of a bunch of web-mic's that I had laying
> around. The servos aim
> the BB-gun in the direction of the strongest audio
> signal. The
> problem I'm currently having is that it aims toward
> ANY noise, so I'm
> trying to learn about sound processing to find a way
> to filter out
> any sound that doesn't come close to the pigeon
> noise. I also want
> to do it without a PC being involved. I like the
> idea of stand-alone
> projects, otherwise I would just use a PC to begin
> with. What fun
> would that be? An interesting side-effect of this
> is that it tries
> to track the sound of flapping wings when they fly
> by. It reminds me
> of a sci-fi movie where anti-air guns are targeting
> planes. It's too
> cool. I mounted an old web-cam on the turret and
> hooked it to my VCR
> so I could watch tracking attempts. It's usually
> pathetic and clumsy-
> looking, but still interesting.
>
> In most cases, the pigeons get scared at the sudden
> whine of the
> servos and movement of the turret, so the gun rarely
> has to fire.
> The birds are scared, they shut up, problem
> solved... [noparse]:)[/noparse] Even when
> it does fire, the aiming system is so crude that the
> birds never get
> hit. It just adds an exclaimation mark to the
> whining servo's
> statement of "GET OUT OF HERE!"
>
> It's too bad that after all of this effort, those
> stupid birds just
> don't learn. Now I have the noise of the turret on
> top of the
> continuous bird noises. Hmmm... Maybe I should
> turret mount the
> innards of a microwave oven to cook the suckers?!?
> JUST KIDDING!!!
>
> -Derek
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed.
> Text in the Subject and Body of the message will be
> ignored.
>
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
>
>
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-K
At 12:12 PM 12/11/02 -0000, you wrote:
>Derek,
>
>This sounds like a very cool idea, I hate the little feathered s*ds
>too. You might want to have a look at these guys,:
>
>http://www-2.cs.cmu.edu/~cmucam/
>
>If the military have it, then the universities will also have it,
>just smaller and more reliable!
>
>I have contacted them regarding the 3D aspect of the tracking
>(unfortunately the pigeons can fly!) and they said to use an off
>board controller, such as a basic stamp, that can cope with serial
>commands. A bit of software later and it will track either the
>colour of the birds or their movement (if I am not mistaken).
>
>Don't forget to use an infrared filter on the lens as the daylight
>will play havoc with the red band!
>
>All the info is on the web site and you can buy them from several
>places too!
>
>Hope this helps
>
>Andy.
>
>
>
>--- In basicstamps@yahoogroups.com, "Derek Schwartz <junkmail@B...>"
><junkmail@B...> wrote:
>> --- In basicstamps@yahoogroups.com, "anode505" <anode505@y...>
>wrote:
>> > Semi OffTopic.
>> >
>> > But what is/are the perfered method of tracking a moving object.
>> > Like having a survailnce cam follow a person walking by? IR?
>>
>> Hi! I've wasted many, many hours looking for information on
>tracking
>> systems and I've hit the same wall. It seems that complex imaging
>> systems are used in most cases. In other cases, it's military
>> information that they are not giving out!
>>
>> I've been experimenting with a low-tech approach that works for my
>> application:
>>
>> My house has been infested with roof-roaches (you know, pigeons).
>> They drop dung on everything, plop down hard on my roof, and make
>> obnoxious noises all day long. That's when I designed an automated
>> BB-gun turret that I mounted at the edge of my roof. The BS2
>handles
>> everything just fine. In fact, as soon as I get some more time,
>I'm
>> going to put up a web page with build information.
>>
>
>
>
>To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
>from the same email address that you subscribed. Text in the Subject and
Body of the message will be ignored.
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
Happy Holidays: Visit my Christmas webpage at
http://mntnweb.com/xmas.htm
Very respectfully, your obedient servant.
Kerry
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gave me chills! It looked like a little cyborg monster, keeping an
eye on its prey. Definitely much more smooth in tracking than my
crude-and-jumpy setup.
Now, to justify blowing $110 on one of those modules! [noparse]:)[/noparse]
-Derek
--- In basicstamps@yahoogroups.com, "thor69uk <andrew.thornber@c...>"
<andrew.thornber@c...> wrote:
> Derek,
>
> This sounds like a very cool idea, I hate the little feathered s*ds
> too. You might want to have a look at these guys,:
>
> http://www-2.cs.cmu.edu/~cmucam/
>
> If the military have it, then the universities will also have it,
> just smaller and more reliable!
>
> I have contacted them regarding the 3D aspect of the tracking
> (unfortunately the pigeons can fly!) and they said to use an off
> board controller, such as a basic stamp, that can cope with serial
> commands. A bit of software later and it will track either the
> colour of the birds or their movement (if I am not mistaken).
>
> Don't forget to use an infrared filter on the lens as the daylight
> will play havoc with the red band!
>
> All the info is on the web site and you can buy them from several
> places too!
>
> Hope this helps
>
> Andy.
>
>
>
> --- In basicstamps@yahoogroups.com, "Derek Schwartz
<junkmail@B...>"
> <junkmail@B...> wrote:
> > --- In basicstamps@yahoogroups.com, "anode505" <anode505@y...>
> wrote:
> > > Semi OffTopic.
> > >
> > > But what is/are the perfered method of tracking a moving
object.
> > > Like having a survailnce cam follow a person walking by? IR?
> >
> > Hi! I've wasted many, many hours looking for information on
> tracking
> > systems and I've hit the same wall. It seems that complex
imaging
> > systems are used in most cases. In other cases, it's military
> > information that they are not giving out!
> >
> > I've been experimenting with a low-tech approach that works for
my
> > application:
> >
> > My house has been infested with roof-roaches (you know,
pigeons).
> > They drop dung on everything, plop down hard on my roof, and make
> > obnoxious noises all day long. That's when I designed an
automated
> > BB-gun turret that I mounted at the edge of my roof. The BS2
> handles
> > everything just fine. In fact, as soon as I get some more time,
> I'm
> > going to put up a web page with build information.
> >
needs to contrast the background pretty well. Not sure if it would work for
tracking sky-rats, but they are cool for other stuff. A more humane approach
(and less dangerous for humans) would be to squirt water at the targets. (Or
possibly launch a cat on the roof?)
One shopping mall I went to in North Carolina had a large, open atrium with
lots of perching places. They had some sort of noisemaker that clicked and
emitted some ultrasonic tones to keep the birds away -- seemed to work
pretty well. I think the Super Wal-Mart down the street needs to look into
this.
> WOW! Thanks! That's awesome. Watching those demo videos almost
> gave me chills! It looked like a little cyborg monster, keeping an
> eye on its prey. Definitely much more smooth in tracking than my
> crude-and-jumpy setup.
>
> Now, to justify blowing $110 on one of those modules! [noparse]:)[/noparse]
> > This sounds like a very cool idea, I hate the little feathered s*ds
> > too. You might want to have a look at these guys,:
> >
> > http://www-2.cs.cmu.edu/~cmucam/
> >
> > If the military have it, then the universities will also have it,
> > just smaller and more reliable!
> >
> > I have contacted them regarding the 3D aspect of the tracking
> > (unfortunately the pigeons can fly!) and they said to use an off
> > board controller, such as a basic stamp, that can cope with serial
> > commands. A bit of software later and it will track either the
> > colour of the birds or their movement (if I am not mistaken).
> >
> > Don't forget to use an infrared filter on the lens as the daylight
> > will play havoc with the red band!
> >
> > All the info is on the web site and you can buy them from several
> > places too!
Derek,
Yes the unit does look cool. $110 is a bit much but thats only $1 a
bird if you shoot 110 of them!!! Bargin!
On a more humane note, we have a huge greenhouse complex on this side
of the pond that had a major problem with seagulls pecking holes in
the roof. They contacted a local university and they recorded the
distress calls of the birds. This noise, played over loud speakers
was enough to scare the seagulls away. They found that they only had
to play the sound about 5-6 times a day to keep them away. Might be
an option?
My personal choice would be to just shoot the little bu**ers, far
more satisfying!
Rodent:
Good point about the contrast, I hadn't thought of that. The thing
that I noticed about this unit is that you can turn off colour bands
and select the targeting on the modified information.(If I read the
info correctly..) If you were to turn off the red band, that would
drop the infrared from the sky and the sky would just disapear. The
reverse would occour with the pigeon in that it would stand out like
a sore thumb. There would be a bit of infrared from the bird but no
where near as much as from the sky. This would bump up the contrast,
wouldn't it?
Might work, what do you think??
A small point about the firing of a cat on to the roof to scare them
away would pose a small problem. You would then end up a cat meowing
its head off also stuck on the roof! What do you do then, fire a
doberman up there to scare the cat away.... This train of thought
could get silly!!!
Happy tracking,
Andy....
--- In basicstamps@yahoogroups.com, Rodent <daweasel@s...> wrote:
> They CMU cams require a good light level to work properly, and the
target
> needs to contrast the background pretty well. Not sure if it would
work for
> tracking sky-rats, but they are cool for other stuff. A more humane
approach
> (and less dangerous for humans) would be to squirt water at the
targets. (Or
> possibly launch a cat on the roof?)
>
> One shopping mall I went to in North Carolina had a large, open
atrium with
> lots of perching places. They had some sort of noisemaker that
clicked and
> emitted some ultrasonic tones to keep the birds away -- seemed to
work
> pretty well. I think the Super Wal-Mart down the street needs to
look into
> this.
>
> > WOW! Thanks! That's awesome. Watching those demo videos almost
> > gave me chills! It looked like a little cyborg monster, keeping
an
> > eye on its prey. Definitely much more smooth in tracking than my
> > crude-and-jumpy setup.
> >
> > Now, to justify blowing $110 on one of those modules! [noparse]:)[/noparse]
>
clear of pigeons, along with providing building office workers with some
spectacular in-the-air captures.
Dennis
Original Message
From: Rodent [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=3hQWT-ys5X5preA0R2VSaE0ckblQo_Y0gh-AK-pMI0uHKija2xS4T2hqaDRonNJGKReipI5wYUOK]daweasel@s...[/url
Sent: Wednesday, December 11, 2002 8:35 PM
To: basicstamps@yahoogroups.com
Subject: Re: [noparse][[/noparse]basicstamps] Re: OT: Tracking an object
They CMU cams require a good light level to work properly, and the
target needs to contrast the background pretty well. Not sure if it
would work for tracking sky-rats, but they are cool for other stuff. A
more humane approach (and less dangerous for humans) would be to squirt
water at the targets. (Or possibly launch a cat on the roof?)
One shopping mall I went to in North Carolina had a large, open atrium
with lots of perching places. They had some sort of noisemaker that
clicked and emitted some ultrasonic tones to keep the birds away --
seemed to work pretty well. I think the Super Wal-Mart down the street
needs to look into this.
Um not only in LA, they also live, and work around the Met Life
building, in Manhattan. I still think they should work all over the
city, not just around that building. This whole city is lousy with those
filthy birds!
Gregg C Levine hansolofalcon@w...
"The Force will be with you...Always." Obi-Wan Kenobi
"Use the Force, Luke."· Obi-Wan Kenobi
(This company dedicates this E-Mail to General Obi-Wan Kenobi )
(This company dedicates this E-Mail to Master Yoda )
>
Original Message
> From: Dennis P. O'Leary [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=engouXtLXCfnZTDOXoqJSDlAv6-RHc8DVblEmG5Xd1rNwtn5sj3PL91HkTJPGlPpMw4_9RaQFoTG3e2aBpQ]doleary@e...[/url
> Sent: Thursday, December 12, 2002 3:02 PM
> To: basicstamps@yahoogroups.com
> Subject: RE: [noparse][[/noparse]basicstamps] Re: OT: Tracking an object
>
> Peregrine falcons nesting in tall buildings in downtown LA keep them
> clear of pigeons, along with providing building office workers with
some
> spectacular in-the-air captures.
>
> Dennis
>
>
Original Message
> From: Rodent [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=Z0HW2RbiRxC9wJhQj_70wWAhXImUk2LmwTNdr8cLL--kvLzZmgRiMxPjFnmDcbKfc3Vr_FDW-pYsvLA8]daweasel@s...[/url
> Sent: Wednesday, December 11, 2002 8:35 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] Re: OT: Tracking an object
>
>
> They CMU cams require a good light level to work properly, and the
> target needs to contrast the background pretty well. Not sure if it
> would work for tracking sky-rats, but they are cool for other stuff. A
> more humane approach (and less dangerous for humans) would be to
squirt
> water at the targets. (Or possibly launch a cat on the roof?)
>
> One shopping mall I went to in North Carolina had a large, open atrium
> with lots of perching places. They had some sort of noisemaker that
> clicked and emitted some ultrasonic tones to keep the birds away --
> seemed to work pretty well. I think the Super Wal-Mart down the street
> needs to look into this.
>
>