Thank You for the tip=2C
I am thinking more along the lines of
a Sensor "chip" either ccd or ??? with x and Y registers who
handle/address Individual pixels.
So like only one pixel will be a 1 at any time
all the others will be a zero unless a cosmic ray
and not the desired light makes it be a one.
Does this make any sense to you about my meaning ?
Im not trying to be funny here=2C I truly mean what i say
but do not know if such a thing exists.
A 1 means a photon has hit or is illuminating a single pixel
of an array which is to be read an d reset by a 32 bit
address register.
Im speaking at a basic component level like a OR or AND or
MEMORY chip which is actually a sensor chip suitable
for my wants.
It does not do anything useful until you include in
a circuit of your own design.
It may cost only $20.00 USD a piece.
It may be DIP or Surface mount technology.
Not a useful device by layman understanding.
I have seen computing devices which work only one bit=2C one byte=2C one=20
quad word at a time
I desire to see a sensor chip built like this.
If this sensor is found=2C then comes the task of illuminating only
one pixel at a time=2C either the light source or the
sensor will be moving instead of a magnet coil velocity thing.
Thanks for your answers=2C
geoff
On 3/26/2013 10:31 PM=2C Les LaZar wrote:
> You might want to Google =E2=80=9CCMUCAM=E2=80=9D. It is a low-cost comp=
uter vision=20
> sensor that can=2C among other functions=2C track a colored object in its=
=20
> field of view and report its X-Y coordinates. The resolution may be=20
> too low for your application=2C but it is open source and a starting poin=
t.
> Les
> *From:* Geoff
> *Sent:* Tuesday=2C March 26=2C 2013 3:56 AM
> *To:* psnlist@..............
> *Cc:* Charles R Patton
> *Subject:* Re: Seismic Sensors
> I like the idea of using a WEBcam or something to look at the red dot
> then use a custom program to read the video and turn the graphic data
> into rectangular coordinates of a standard four quadrant graph
> with the point resting in the center of the graph
> But to do this in near real time may not be possible for myself to do.
> The max rate will be like 30Hz to 60Hz which is a video frame rate.
> Video is usually encoded and needs to be uncompressed.
> Uncompressing video takes lots of time to do so like a
> series of BMP captures at whatever rate would be the thing to do.
> You would take screenies at like 30 per second in a modulo fashion
> then save all after an alarm and the series of like
> 108000 BMP images would be decoded into a series of (X=2CY) coordinates ?=
?
>
> The concept as seen From a layman's point of view.
>
> A mass on end of a bent over spring wire might do for a vertical sensor ?
>
> Regards=2C
> geoff
>
>
>
>
>
>
> On 3/8/2013 3:05 PM=2C Charles R Patton wrote:
>> I would use a shorter projection distance so the dot is on a smaller=20
>> surface -- perhaps 10" square. Or even smaller -- you'll get the=20
>> idea in a moment. I'd make this surface a back projection screen=20
>> such as in the old microfilm readers. Frosty Mylar sheet or some=20
>> similar. Mainly rear projection so I wouldn't have to get into=20
>> correcting for angular skew=2C but that would be your choice if you=20
>> want to do slightly more image processing. Next I'd take a standard=20
>> USB webcam and view the image of the dot projected on the film. Run=20
>> this through any one of several free image processing libraries=20
>> (depends a bit whether you're using Windows or Linux) or write a=20
>> simple custom program to extract the pixel position of the dot. =20
>> Typical low resolution webcams give the position to 640x480. =20
>> Actually if you use image processing=2C this can be interpolated due to=
=20
>> the 8 bit quantization of the dot in the image and that it will=20
>> typically spread over several pixels. Your frame update rate will be=20
>> around 30 times a second. The size of the image is not the=20
>> resolution limit=2C the webcam is. So you can also get higher=20
>> resolution webcams. In any case=2C the projected image size is not=20
>> very critical unless you make it too small. The point here being=20
>> that it can easily be made to be a table top size.
>> Regards=2C
>> Charles R. Patton
>>
>>
>> On 3/8/2013 5:47 AM=2C Geoff wrote:
>>> Scholars and Gentle-peoples=2C
>>>
>>> Here is a Video created by myself which shows
>>> what i want to measure
>>>
>>> http://youtu.be/w-6r9o7Mds8
>>>
>>> Can someone tell me how they might
>>> actually=2C or Do now=2C measure in real time=2C
>>> the (x=2Cy) coordinate of this moving Laser spot ?
>>>
>>> Youtube says my video is blocked in some countries=2C
>>> Don't know why=2C or where it is blocked.
>>> Most likely because I used FM general radio broadcast
>>> for the Audio part of the video.
>>> This station damages the audio before it is transmitted
>>> so i do not understand why it makes any difference anywhere.
>>>
>>> Any Comments ?
>>>
>>> Regards=2C
>>> geoff
>>> __________________________________________________________
>>>
>>> Public Seismic Network Mailing List (PSNLIST)
>>>
>>> To leave this list email PSNLIST-REQUEST@.............. with the=20
>>> body of the message (first line only): unsubscribe
>>> See http://www.seismicnet.com/maillist.html for more information.
>>
>
>
> --=20
> *************
> It is by the Entropy=2C That I set my mind in Motion.
> Entropy is the seeking of equilibrium.
> It is by the Entropy that=2C I set my mind in motion.
--=20
*************
It is by the Entropy that I set my mind in motion.
Entropy is the seeking of equilibrium.
It is by the Entropy that I set my mind in motion.
Thank You for the tip=2C
I am thinking more along the lines of
a Sensor "chip" either ccd or ??? with x and Y registers who
handle/address Individual pixels.
So like only one pixel will be a 1 at any time
all the others will be a zero unless a cosmic ray
and not the desired light makes it be a one.
Does this make any sense to you about my meaning ?
Im not trying to be funny here=2C I truly mean what i say
but do not know if such a thing exists.
A 1 means a photon has hit or is illuminating a single pixel
of an array which is to be read an d reset by a 32 bit
address register.
Im speaking at a basic component level like a OR or AND or
MEMORY chip which is actually a sensor chip suitable
for my wants.
It does not do anything useful until you include in
a circuit of your own design.
It may cost only $20.00 USD a piece.
It may be DIP or Surface mount technology.
Not a useful device by layman understanding.
I have seen computing devices which work only one bit=2C one byte=2C
one quad word at a time
I desire to see a sensor chip built like this.
If this sensor is found=2C then comes the task of illuminating only
one pixel at a time=2C either the light source or the
sensor will be moving instead of a magnet coil velocity thing.
Thanks for your answers=2C
geoff
On 3/26/2013 10:31 PM=2C Les LaZar wrote:
You might want to Google =E2=80=9CCMUCAM=E2=80=9D.=C2=A0 It =
is a low-cost
computer vision sensor that can=2C among other functions=2C
track a colored object in its field of view and report its
X-Y coordinates.=C2=A0 The resolution may be too low for your
application=2C but it is open source and a starting point.
I like the idea of using a
WEBcam or something to look at the red dot
then use a custom program to read the video and turn the
graphic data
into rectangular coordinates of a standard four quadrant
graph
with the point resting in the center of the graph
But to do this in near real time may not be possible for
myself to do.
The max rate will be like 30Hz to 60Hz=C2=A0 which is a video
frame rate.
Video is usually encoded and needs to be uncompressed.
Uncompressing video takes lots of time to do so like a
series of BMP captures at whatever rate would be the thing
to do.
You would take screenies at like 30 per second in a modulo
fashion
then save all after an alarm and the series of like
108000 BMP images would be decoded into a series of (X=2CY)
coordinates ??
The concept as seen From a layman's point of view.
A mass on end of a bent over spring wire might do for a
vertical sensor ?
Regards=2C
geoff
On 3/8/2013 3:05 PM=2C Charles R Patton wrote:
I would use a shorter projection distance so the dot is on a
smaller surface -- perhaps 10" square.=C2=A0 Or even smalle=
r=C2=A0
-- you'll get the idea in a moment.=C2=A0 I'd make this
surface a back projection screen such as in the old
microfilm readers.=C2=A0 Frosty Mylar sheet or some similar=
..=C2=A0
Mainly rear projection so I wouldn't have to get into
correcting for angular skew=2C but that would be your
choice if you want to do slightly more image
processing.=C2=A0 Next I'd take a standard USB webcam and
view the image of the dot projected on the film.=C2=A0 Run
this through any one of several free image processing
libraries (depends a bit whether you're using Windows or
Linux) or write a simple custom program to extract the
pixel position of the dot.=C2=A0=C2=A0 Typical low resoluti=
on
webcams give the position to 640x480.=C2=A0 Actually if you
use image processing=2C this can be interpolated due to
the 8 bit quantization of the dot in the image and that
it will typically spread over several pixels.=C2=A0 Your
frame update rate will be around 30 times a second.=C2=A0 T=
he
size of the image is not the resolution limit=2C the
webcam is.=C2=A0 So you can also get higher resolution
webcams.=C2=A0 In any case=2C the projected image size is n=
ot
very critical unless you make it too small.=C2=A0 The point
here being that it can easily be made to be a table top
size.=C2=A0=C2=A0
Regards=2C
Charles R. Patton
On 3/8/2013 5:47 AM=2C Geoff wrote:
Scholars and Gentle-peoples=2C
Here is a Video created by myself which shows
what i want to measure
Can someone tell me how they might
actually=2C or Do now=2C measure in real time=2C
the (x=2Cy) coordinate of this moving Laser spot ?
Youtube says my video is blocked in some countries=2C
Don't know why=2C or where it is blocked.
Most likely because I used FM general radio broadcast
for the Audio part of the video.
This station damages the audio before it is transmitted
so i do not understand why it makes any difference
anywhere.
--=20
*************
It is by the Entropy=2C That I set my mind in Motion.
Entropy is the seeking of equilibrium.
It is by the Entropy that=2C I set my mind in motion.
--=20
*************
It is by the Entropy that I set my mind in motion.
Entropy is the seeking of equilibrium.
It is by the Entropy that I set my mind in motion.