PTGui changes images from portrait to landscape and focal length from 10mm to xxxx mm

[gt]

Hi,

I have successfully been using PTGui for a while but it has suddenly
started behaving very oddly.

When I load a set of images in portrait orientation it changes some to
landscape.

It also changes the focal length, which I set manually, from 10 mm to
all sorts of different numbers - normally from 70 mm to 1500 mm.

What is strange is that I am using exactly the same set up as I have
used in the past - lens, camera, angle of rotation etc....

Any help much appreciated!

Thanks,


Glyn

[PTGui Support]

Hi Glyn,

Did you take your panorama in the middle of a symmetrical room? In that
case please see 3.1:

http://www.ptgui.com/support.html#3_1

After removing all control points between non-overlapping images and
reoptimizing the problem should be solved.

Joost

[gt]

Hi,


Thanks, but the answer is no. The panorama was taken in a two very
asymmetrical rooms, and not from the middle. And when I check the
control points, they seem to be OK.

Any other ideas?

Many thanks,

[alarcon]

Hi Joost,

 

I downloaded the new version of PTGUI and at the weekend I shot a panorama outside in one of the parks in Liverpool and I also got the result, after stitching all to pot I had to delete some really stupid high CP numbers and eventually had to insert my own CP points manually.

At one point I used horizontal CP to try to strighten the panorama, but it would not work the straight panorama tab

 

Something seem not to be right.

 

kind regrads,

 

Rodrigo

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[Erik Krause]

Am 21.03.2011 13:45, schrieb gt:
> Thanks, but the answer is no. The panorama was taken in a two very
> asymmetrical rooms, and not from the middle. And when I check the
> control points, they seem to be OK.
>
> Any other ideas?

Could you provide the project file - just the .pts without the images -
somewhere for download? This would help to see where the problem is.

Did you by chance use RAW images?

Another thing to check is the orientation sensor in the camera. It
should be set Off for panoramas.

--
Erik Krause
http://www.erik-krause.de

[gt]

Hi,

Thanks for the reply.

I have tried with RAW, tifs and Jpegs and get the same result. I also
have another stitching programme which overall is not as useful as
PTGui, and this handled the images fine.

I have had to add all the points manually (which took forever!) and
managed to get a good result.


I am not sure what you mean about the 'orientation sensor' in the
camera. I have checked my camera and the closest thing I can find is
the auto-rotate feature which is 'off' for camera and 'on' for
computer (I think it has to be 'on' for computer for Lightroom to work
correctly...).

I would happily send you the .pts file, but I am not sure where I can
provide it for download.... can I email it?

Many thanks,


Glyn

[Erik Krause]

Am 21.03.2011 19:33, schrieb gt:
> I am not sure what you mean about the 'orientation sensor' in the
> camera. I have checked my camera and the closest thing I can find is
> the auto-rotate feature which is 'off' for camera and 'on' for
> computer (I think it has to be 'on' for computer for Lightroom to work
> correctly...).

If must be off for computer for PTGui to work correctly. Or more
precise: It should be off for the nadir and zenith shot if you shoot
sphericals, since in those cases it will give arbitrary results.

> I would happily send you the .pts file, but I am not sure where I can
> provide it for download.... can I email it?

You can email it to me off list, but this wouldn't enable anyone else to
help you. There are free file sharing services on the web..

Joost: Google suggests to use google docs as a replacement for the
ceased files upload section. Will you set up that?

[Hans]

On Mar 21, 1:45 pm, gt <glynthorne...@hotmail.com> wrote:
> Hi,
>
> Thanks, but the answer is no.  The panorama was taken in a two very
> asymmetrical rooms, and not from the middle.  And when I check the
> control points, they seem to be OK.
>
> Any other ideas?

It would be nice to know what you actually use.
Camera, lens, panohead.

How many images and with what settings.
These are info you should always supply when asking for support.

Hans

[gt]

Hi,

Here is a link for the mailbigfile.com file sending service. It should
enable anyone to download the .pts file (i hope!)

http://mbf.cc/Lz88

This is a new project with the same set of images and this time it has
turned most of them (but no all) to landscape and changed the lens to
62mm focal length (entered manually at 10mm).

I am not using zenith or nadir shots, just three rows of 8 with 45˚
between images. This has worked well for me in the past.

I am fairly certain that I have always used my camera with the
'computer auto rotate' set to 'on'. Although, like Rodrigo I have
just downloaded a new version so this may be a new issue...?

Many thanks for your help!

[gt]

Hi,

I am using the following:
Canon 7D (crop sensor, 1.613 conversion factor)
Sigma 10-20 mm lens (I am aware of the setting required in PTGui for
this lens)
Nodal Ninja Pano head
3 rows of 8 images with 45˚ between images horizontally and
vertically.

All setting have worked well in the past and I am confident that the
images are OK because they have been successfully stitched by another
programme and by manually adding control points.

I have tried it on two different rooms, neither of which was
symmetrical.

Many thanks,


Glyn

[Erik Krause]

Am 21.03.2011 20:18, schrieb gt:
> http://mbf.cc/Lz88
>
> This is a new project with the same set of images and this time it has
> turned most of them (but no all) to landscape and changed the lens to
> 62mm focal length (entered manually at 10mm).

The images are rotated according to their control points, which
obviously are completely wrong. Are there many repeating patterns in the
room?

And as Hans wrote: we need any available information!

However, this seems to be an issue in control point creation. In this
case we'd need the images as well. Could you provide small (1/4 of
original is good), highly compressed versions in a zip file?

best regards

[Hans]

On Mar 21, 8:47 pm, gt <glynthorne...@hotmail.com> wrote:
> Hi,
>

> I am using the following:
> Canon 7D (crop sensor, 1.613 conversion factor)
> Sigma 10-20 mm lens (I am aware of the setting required in PTGui for
> this lens)
> Nodal Ninja Pano head
> 3 rows of 8 images with 45˚ between images horizontally and
> vertically.
>
> All setting have worked well in the past and I am confident that the
> images are OK because they have been successfully stitched by another
> programme and by manually adding control points.
>
> I have tried it on two different rooms, neither of which was
> symmetrical.

I doubt very much that these images are taken with a correct setup
panohead.
Even individual image pairs from what I assume is the 8 at zero pitch
gives me average of 80-100.

And you should never shoot this many images with a lens like this. It
means a lot of overlaps between them which easy contributes to bad
controlpoints.
8+4+4 should be enough.
And look up for the panohead and rotator when they are in the image
they may get controlpoints which turns everything around.

Hans

[Joergen Geerds]

I downloaded the file, and it is very confusing... at first glance, I
think you have way too many shots than you actually need, and that is
causing much of your problems.

you said it's a 10mm lens on a 1.6x crop camera? is it a wide angle,
or a fisheye lens?
I would look through your source images, and reduce the number of
files you have, think of something like 25-33% overlap, not much more
than that... you probably don't need a middle row, from what I can
guess.
then open your raw files in whatever your raw developer is, and make
sure you save them as tiffs with all the same orientation.
I would then start a new ptgui project, and the auto CP generator
should create something more sensible.

good luck

joergen
newyorkpanorama.com

[gt]

Hi,

Here's a small set of jpegs. As you will see there is very much a
repeating pattern...

http://mbf.cc/O5q1

My equipment and settings are:

Canon 7D (crop sensor, 1.613 conversion factor)
Sigma 10-20 mm lens (I am aware of the setting required in PTGui for
this lens)
Nodal Ninja Pano head
3 rows of 8 images with 45˚ between images horizontally and
vertically.

Cheers

[Joergen Geerds]

On Mar 21, 3:59 pm, Hans <hans...@gmail.com> wrote:
> And you should never shoot this many images with a lens like this. It
> means a lot of overlaps between them which easy contributes to  bad
> controlpoints.
> 8+4+4 should be enough.
> And look up for the panohead and rotator when they are in the image
> they may get controlpoints which turns everything around.

very true, 8+8+N+Z are also sufficient for this setup... 7 around is
ideal, 8 around is still ok, 6+6+N+Z (+1 inbetween, to establish
overlap for lens parameters) would work work too.

joergen
newyorkpanorama.com

[Joergen Geerds]

On Mar 21, 4:05 pm, gt <glynthorne...@hotmail.com> wrote:
> Hi,
>
> Here's a small set of jpegs.  As you will see there is very much a
> repeating pattern...
>
> http://mbf.cc/O5q1
>
> My equipment and settings are:
>
> Canon 7D (crop sensor, 1.613 conversion factor)
> Sigma 10-20 mm lens (I am aware of the setting required in PTGui for
> this lens)
> Nodal Ninja Pano head
> 3 rows of 8 images with 45˚ between images horizontally and
> vertically.

thanks for the info... i looked at the images, replaced the CR2 with
the jpgs, only to discover that there are tons of CPs that are
completely wrong... Joost did ask you if it was a symmetrical room,
and you said no, but yet the wallpaper is totally symmetrical, and
causes PTgui to place auto CPs that are impossible... if you set them
manually, you need to start thinking about land marks in the pano and
work around them.

you can try to auto generate CPs in image pairs where you know they
are adjacent (control-shift-g), and delete any CPs in image pairs that
are not adjacent (that is why we recommend to not go crazy shooting so
many tiles.)

good luck

joergen
newyorkpanorama.com

[gt]

Hi all,

Many thanks for everyone's help.

I think the problem is the repeating pattern in the wallpaper, and I
expect shooting too many images doesn't help... both of these perhaps
contribute to confusing the CP generator... the programme is perhaps
finding the same landmarks in each image again and again... and trying
to match them up.

I'll certainly shoot fewer images next time after having to set
control points manually for 24!

Cheers,


Glyn

[Erik Krause]

Am 21.03.2011 21:05, schrieb gt:
> Here's a small set of jpegs. As you will see there is very much a
> repeating pattern...
>
> http://mbf.cc/O5q1

A managed to achieve a perfect result auto-generating control points
pairwise (I think there is a tutorial on this by Hans somewhere). This
involves pressing 48 times "Next" and Ctrl+Shift+G but is still much
faster than setting all points by hand.

The problem are the repeating patterns on the wall. Since PTGui doesn't
assume a shooting pattern it gets confused by all those flowers and
generates control points between non-adjacent images.

[Hans]

On Mar 21, 9:35 pm, gt <glynthorne...@hotmail.com> wrote:
> Hi all,
>
> Many thanks for everyone's help.
>
> I think the problem is the repeating pattern in the wallpaper, and I
> expect shooting too many images doesn't help... both of these perhaps
> contribute to confusing the CP generator... the programme is perhaps
> finding the same landmarks in each image again and again... and trying
> to match them up.
>
> I'll certainly shoot fewer images next time after having to set
> control points manually for 24!

Here is my tutorial on repeating structures
http://www.panoramas.dk/panorama/stitch-similar-structures/


Hans

[gt]

Perfect, thanks!

On Mar 21, 8:50 pm, Hans <hans...@gmail.com> wrote:
> On Mar 21, 9:35 pm, gt <glynthorne...@hotmail.com> wrote:
>
> > Hi all,
>
> > Many thanks for everyone's help.
>
> > I think the problem is the repeating pattern in the wallpaper, and I
> > expect shooting too many images doesn't help... both of these perhaps
> > contribute to confusing the CP generator... the programme is perhaps
> > finding the same landmarks in each image again and again... and trying
> > to match them up.
>
> > I'll certainly shoot fewer images next time after having to set
> > control points manually for 24!
>

> Here is my tutorial on repeating structureshttp://www.panoramas.dk/panorama/stitch-similar-structures/