Hey geoff, any progress?
This looks pretty good
http://www.sbg-systems.com/products/ig-500a
probably expensive though!
On Friday, April 27, 2012 1:19:29 AM UTC+2, Geoff G8DHE wrote:
Just an update on progress in using the GPSImageDirection, GPSPitch
GPSRoll.
I have put together a very
No changes in the last month or two, waiting on new releases of software
and authors priorities of course.
Yes that's the second one I've seen listed, the one used by Tinkerforge
mentioned above is the other. I suspect we will see quite a few appear as
demand for such systems is increasing for
Just an update on progress in using the GPSImageDirection, GPSPitch
GPSRoll.
I have put together a very quick page on the practical use of logging and
using the data from within ExifTool.
I suspect the format I have used for PTGui input, with small modifications,
could be used with Hugin as
that looks interesting. i bet it's not accurate enough for anything useful.
if you buy me one, i'll ask robot boy to whip something together. :)
On Friday, April 6, 2012 5:00:54 PM UTC+2, zarl wrote:
Hi,
what about this one:
https://shop.tinkerforge.com/bricks/imu-brick.html
This one
Yes that one looks fun, fairly cheap too. It fuses gyro,accelerometer and
magnetometer so it gives a stable solution. Resolution does not mean
accuracy ;-), but it should be good enogh for playing around.
I wish a digital camera could catch and save some data over USB at the
moment of shooting,
Hi,
what about this one:
https://shop.tinkerforge.com/bricks/imu-brick.html
This one seems to have a 0.01 degree resolution for roll, pitch and
yaw.
Cheers,
Carl
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Carlos Eduardo G. Carvalho (Cartola) wrote:
Hi,
I am probably going to make a robot tripod head controled by an arduino.
I already the arduino and I am going to test some motors soon. Using
this kind of thing can't you put some kind of position sensors in the
tripod head to get the ypr
Uau :) lol! I really didn't realize that! And it has also the gear
reduction as long as I know, so they are in general strong. The only
problem/feature that don't allow them to be used to rotate the horizontal
axis is that they only rotate 180º as long as I've seen till now.
I think this one can
Hi,
I am probably going to make a robot tripod head controled by an arduino. I
already the arduino and I am going to test some motors soon. Using this
kind of thing can't you put some kind of position sensors in the tripod
head to get the ypr parameters? I thought about some axial sensor, like
There are several Arduino based Pano heads a Google search will find
several links including this one
http://openrise.com/lab/bender_328/index.htm?arduino
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Well try these for size;
http://www.sparkfun.com/datasheets/IC/HMC105X.pdf
and prices here;
http://parts.digikey.com/1/parts/947939-sensor-magnetic-3-axis-16-plcc-hmc1053.html
Calibration can be achieved in-situ quite happily, at least for the sort of
accuracy I need, I'm not expecting template
On 2 Feb., 23:24, Geoff G8DHE geoff.mat...@gmail.com wrote:
I must be missing something ?
maybe the difference between intrinsic and extrinsic values?
Yaw as I understand it is the difference between direction of travel and
direction the device is pointing. As my camera is static when I
At this point I have done a ton of research on this.
You can't use a compass by itself because it suffers from a lot of
interference (hard and soft magnetic interference, it's called)
You can use a gyroscope but only for a short time (30 seconds, maybe) and
after that, it 'drifts' and you get
That's interesting! Pitch and Roll are reasonably easy to acquire.
It's the yaw (heading) that is totally unreliable - basically useless - at
this point. There is no sensor that exists (that is economically feasible,
anyway) that can give us this data, in 2012 :(
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I must be missing something ?
Yaw as I understand it is the difference between direction of travel and
direction the device is pointing. As my camera is static when I take a shot
the sensor and camera always point in the same direction so the amount of
YAW is always Zero with great precision !
EXIFtools from version 8.75 now fully supports the GPSPitch and GPSRoll
parameters :-)
Phil Harvey has now included extraction of the data from devices that
support the $PTNTHPR sentence.
If you want to use the data you just need to add the GPSPitch and GPSRoll
fields as described above and
Geoff, with properly calibrated sensors and a decent sensor fusion
algorithm, you should be able to get 0.1º accuracy, I think. But that's the
expensive stuff.
For cheap uncalibrated sensors without any sensor fusion, the results will
be bad - 5º or more.
On Monday, January 9, 2012 12:26:32
How are you doing with the Attitude in EXIF-experiments?
Cheers
/O
2011/12/11 Geoff G8DHE geoff.mat...@gmail.com
The Solmeta refers to it as Tilt, aircraft refer to it as Pitch - take
your pick ;-) No real preference to be honest!
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I've done quite a bit of research into sensors at it seems that they just
aren't accurate enough.
Only if you spend $500 on a sensor that has been very precisely calibrated
will you get the accuracy I was hoping for.
Those other cheap ones won't be calibrated and will be quite useless. A
Well the basics are there, until we get a few programs able to use the info
then there isn't much more we can do. As previous, PTGui and P2VR have
added it to there to-do lists, but I doubt that it will be that high in
priority terms at the moment, its the normal Chicken or Egg first problem
Well its never going to be accurate enough to act as a final template,
that's to be sure! The current sensors will give a ±5° which is sufficient
to place the image in the rough location, ready for aligning. But if we
don't start he ball rolling then there will never be demand for cheaper
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Am 09.01.2012 12:26, schrieb Geoff G8DHE:
Well its never going to be accurate enough to act as a final template,
that's to be sure! The current sensors will give a ±5° which is sufficient
to place the image in the rough location, ready for
Quality wise, it will not be good enough for stiching, but as starting
values for the estimation process, it should be helpful.
If extended to the mosiac mode where the solution is more ambiguous, it
should help limiting the solution space.And for other photogrammetry
applications it should
Ah, I see, you want to use the headphone lead button to trigger both
the dslr and data logging on the phone.
These are the sources I used to make the circuit. I'm still waiting
for a solid state relay in the post so haven't tested that part yet.
Initial idea and circuit info:
I wanted to do something similar but in the end decided all the
sensors where too expensive for my budget so started thinking about
using my android phone instead. Although I haven't yet tested whether
the camera interferes with the phone's sensors I believe the heading,
pitch, roll etc readings
On 12.12.2011. 10:47, Dave wrote:
using my android phone instead. Although I haven't yet tested whether
the camera interferes with the phone's sensors I believe the heading,
pitch, roll etc readings should be accurate enough for my purposes.
To reduce the chance of the wrong data sensor reading
On 12.12.2011. 10:47, Dave wrote:
Instead I've built a circuit that uses my canon
dslr flash hot shoe to trigger the media button on my android
headphone lead whenever a photo is taken,
How about this: http://eu.blueslr.com/ also?
It's a bit expensive and the app lacks features, but the dongle
On 12.12.2011. 11:41, Dave wrote:
As I understand it the shutter release port can only be used to
trigger the shutter using an external device and not the other way
round. I assumed the hot shoe was the only connection I could use to
detect when the shutter button was depressed on the camera.
Cool! Just a question, why tilt and not just pitch? Keep us posted.
Cheers
/O
2011/12/7 Geoff G8DHE geoff.mat...@gmail.com
OK, just been trying out the idea of creating a couple of UserDefined
fields in ExifTools and it seems to work OK;
I created GPSRoll and GPSTilt within the GPS section
The Solmeta refers to it as Tilt, aircraft refer to it as Pitch - take your
pick ;-) No real preference to be honest!
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Ok,
I think I'm going to go ahead and build this thing:
hotshoe-mounted attitude logger for Nikon SLR
using gyroscope, accelerometer, magnetometer, it will write the Heading,
Pitch, and Roll of each photo into the exif data as the photo is shot.
Now, can anyone recommend which sensor device
Good that I could incite some action ;-)
That board looks interesting.
Look at:
http://www.sparkfun.com/products/10736
http://www.x-io.co.uk/node/9 (which i considered as i want logging to
memory card)
Cheers
O
2011/12/7 Jeffrey Martin 360cit...@gmail.com
Ok,
I think I'm going to go
Its just a serial data link using at least 4800 Baud, with NEMA sentences
as from any GPS unit see this project for some
http://www.petermillerphoto.com/nikongps/nikongps2.html . Watch out for the
non-standard levels, the camera isn't happy working with a 3.3 volt signal
it expects 5 volts on
GPS in phones is also assisted in that is gets rough location data
from the cell tower and uses that with GPS data. A camera would need
to work without it - though it isn't all that hard considering that
you can get tiny puck GPS to USB devices today. I expect it is more
about battery and
2011/12/6, kfj _...@yahoo.com:
On 5 Dez., 17:17, Jeffrey Martin 360cit...@gmail.com wrote:
I like this idea so much, that I continued doing a bit of research on
whether it's possible.
I think it might be.
could the same be done with this
position-ometer?http://www.x-io.co.uk/node/9
it
HI Kay,
On Tuesday, December 6, 2011 8:52:59 AM UTC+1, kfj wrote:
A few years ago we had phones. Now we have smartphones. Let's hope we
also get 'smartcameras'.
I have very little hope at this point. Or, you could consider that they
(canon, nikon, etc.) might do it, 5 or 10 years after you
Right, I was going to say the same. Most iphone and andorid phone has this
capability, soon every little gadget will too. The camera producers need to
se the benefit though. Which I think instant panorama, 3D application etc
would be.
With GPS there are add ons to e.g. Lightroom that correlates
The Solmeta Pro GPS http://www.solmeta.com/index.php/Product/show/id/1unit
does actually measure all these parameters but doesn't record the Tilt
or Roll as currently there are no standard EXIF fields for this data, a
custom set would need to be defined.
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I was thinking more about this, and whether an external logger with sync
(like you do with gps) would be possible
and the answer is definitely NO - GPS is very course, and in practical
purposes, you can have the sync off by a few seconds and the photos will
still have correct location data.
What about using XMP instead of EXIF? I guess XMP is more open to
user-defined data.
2011/12/6, Jeffrey Martin 360cit...@gmail.com:
I was thinking more about this, and whether an external logger with sync
(like you do with gps) would be possible
and the answer is definitely NO - GPS is very
Good find, Geoff!
Ok, so it looks like the heading can be written into the GPS exif data
without any hack?
That leaves only the pitch/roll data - We could probably stick this in the
altitude field, since the altitude data is always totally wrong and
useless anyway :)
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We could also use EXIF Tools facility to define and code our own Custom
fields ? See http://www.sno.phy.queensu.ca/~phil/exiftool/config.html
Joost is also building in the ability to use the GPSImageDirection field
into PTGui and I have suggested that he allow for Tilt and Roll as well,
Yes that's right and the .ExifTool_config allows you to create the
definition for a new tag within your system so that it can be written.
Unknown Tags can be extracted by ExifTool, so that's not a problem.
Reusing other Tags such as Altitude will mean that the data will be
overwritten if you
Yup.
Calibration makes up for any *stationary* interfering objects which is
why you can have a very accurate fixed compass on a ship or vehicle.
So the limitation Geoff points out is mostly a result of the sensor.
However, all the tripod and parts of the head are not stationary
relative to the
I think the main issue is WRITING the data into the nikon camera. it
supports only GPS logging, AFAIK and it might not allow writing to some
other exif field.
that's why i suggested an ugly hack, writing the position info into the gps
/ altitude fields.
does anyone know if a better solution
On 6 Dez., 16:37, Geoff G8DHE geoff.mat...@gmail.com wrote:
You need to calibrate any form of compass ! The Solmeta device requires
that you put it in calibrate mode, and then twist the unit along all 3-axis
twice so that it can record the maximum external field strengths, by
recording the
Well it should be possible the Exif ver. 2.3 spec
http://www.cipa.jp/english/hyoujunka/kikaku/pdf/DC-008-2010_E.pdf
Specifys that the GPS Altitude record is a Rational number which is two
32bit unsigned integers (numerator denominator).
However your going to need to strip those two values out
On 7 Dez., 08:04, Gnome Nomad gnomeno...@gmail.com wrote:
One difference between compact PS cams and DSLR when it comes to
battery life: compact cams use a lot less juice. They're only moving a
tiny little lens around, powering a tiny little chip and not having to
flip a frame-sized mirror
Well, using timestamp correlating photos and a correlated track of
angles could be trivial.
Does the EXIF standard permitt custom data fields (like in this case
adding heading, rotation, pitch and yaw). In that case it would be
possible to use this infor to generate starting ypr values in
On 5 Dez., 17:17, Jeffrey Martin 360cit...@gmail.com wrote:
I like this idea so much, that I continued doing a bit of research on
whether it's possible.
I think it might be.
could the same be done with this position-ometer?http://www.x-io.co.uk/node/9
it would be so cool!
A few years
I believe camera have a portrait/landscape tilt sensor that give a
binary output. This would not provide the information you want.
On Dec 3, 2:38 am, Oskar Sander oskar.san...@gmail.com wrote:
Is there any cameras out there today that record the camera attitude in
EXIF?
Most cameras have at
There is an iPhone App Clinometer that provides very detailed data
about tilt angles in all dimensions.
If you could securely attach your iPhone to your camera or tripod
head, and then calibrate it, you would get the type of information you
seek.
However Clinometer doesn't output any data so you
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