Control Points offset

[mikjoel]

Control Points offset

by mikjoel » Wed Jun 13, 2012 10:57 am

Hello,

I've got a very strange problem when stitching panos. When I stitch pictures taken by my Olympus E330 all my panos seems to have a wrong aspect ratio, also the control points don't fit, also the program tells me that they are fine. All the control points have an offset off about half size of the picture. This happens only with pictures from the E330 - with my Canon or Olympus E30 all panos are ok. The Exif Data seems to be OK for the E330 pictures.
When stitching the panos the result is not acceptable ! Any Idea ( a picture which describes this behaviour better will follow in the afternoon )

The pictures show the control points with the offset
the pano after stitching
the pictures before stitching
and the preview window

Last edited by mikjoel on Wed Jun 13, 2012 2:54 pm, edited 1 time in total.

[klausesser]

by klausesser » Wed Jun 13, 2012 2:23 pm

Hello,

I've got a very strange problem when stitching panos. When I stitch pictures taken by my Olympus E330 all my panos seems to have a wrong aspect ratio, also the control points don't fit, also the program tells me that they are fine. All the control points have an offset off about half size of the picture. This happens only with pictures from the E330 - with my Canon or Olympus E30 all panos are ok. The Exif Data seems to be OK for the E330 pictures.
When stitching the panos the result is not acceptable ! Any Idea ( a picture which describes this behaviour better will follow in the afternoon )

Hi!

Try to use the manual settings for lens and camera. Maybe the EXIFs are not correct interpreted!

Is your camera in the list? If not: put it in!

best, Klaus

[mikjoel]

by mikjoel » Wed Jun 13, 2012 2:47 pm

I've uploaded pictures now !
Yes my camera is in the list !

[gkaefer]

by gkaefer » Wed Jun 13, 2012 3:47 pm

looking at your screenshots... question: do you use the newerst version 2.6.3?
looking at the screenshots and viewing them at x 100% in the sky ther're artefact which could be detected as controlpoints... are these artefacts also in the original images or is this only because of screenshot/upload/resized images?
Georg

[mikjoel]

by mikjoel » Wed Jun 13, 2012 3:56 pm

Hi,

this is not the newest Version - I've also tried with it, but there 's the same problem.
The artefacts come from the screenshot.
The problem is only with pictures made with the Olympus E330 - not with my other cameras.

[mediavets]

by mediavets » Wed Jun 13, 2012 3:57 pm

Hello,

I've got a very strange problem when stitching panos. When I stitch pictures taken by my Olympus E330 all my panos seems to have a wrong aspect ratio, also the control points don't fit, also the program tells me that they are fine. All the control points have an offset off about half size of the picture. This happens only with pictures from the E330 - with my Canon or Olympus E30 all panos are ok. The Exif Data seems to be OK for the E330 pictures.
When stitching the panos the result is not acceptable ! Any Idea ( a picture which describes this behaviour better will follow in the afternoon )

The pictures show the control points with the offset
the pano after stitching
the pictures before stitching
and the preview window

Very strange.

Can we have access to these four images so we can try and stitch them?

[mikjoel]

by mikjoel » Wed Jun 13, 2012 4:29 pm

Hello,

I've got a very strange problem when stitching panos. When I stitch pictures taken by my Olympus E330 all my panos seems to have a wrong aspect ratio, also the control points don't fit, also the program tells me that they are fine. All the control points have an offset off about half size of the picture. This happens only with pictures from the E330 - with my Canon or Olympus E30 all panos are ok. The Exif Data seems to be OK for the E330 pictures.
When stitching the panos the result is not acceptable ! Any Idea ( a picture which describes this behaviour better will follow in the afternoon )

The pictures show the control points with the offset
the pano after stitching
the pictures before stitching
and the preview window

Very strange.

Can we have access to these four images so we can try and stitch them?

Hi - here are the originals:

- I've removed the link again - problem solved

Last edited by mikjoel on Wed Jun 13, 2012 8:21 pm, edited 1 time in total.

[hankkarl]

by hankkarl » Wed Jun 13, 2012 6:45 pm

Try using detection set to low. It may be that you have a sensor with some differences between the pixels. If APP only uses lumiance for detection, it may pick up these paterns. detection set to low decimates the pixels and may smooth out the differences between pixels.

Also, running a smoothing filter on the files before stitching will eliminate the pixel differences, and show if I"m right or wrong.

[mediavets]

by mediavets » Wed Jun 13, 2012 6:56 pm

It's weird.

APG (2.52 in this instance) seems to be locating CPs outside the image.

............

Were these images shot handheld in full auto mode?

Last edited by mediavets on Wed Jun 13, 2012 7:00 pm, edited 1 time in total.

[mikjoel]

by mikjoel » Wed Jun 13, 2012 7:08 pm

The pictures where taken in handheld "Auto Modus" with fixed white balance.
I'm sure there's something wrong with the exif data - I just deleted the exif data of some sample pictures and tried to stitch them again - voila - then it works.

I've no idea what happened to the exif data of all my olympus e330 pictures ( I did not touch these pictures for 2 years now )

[mikjoel]

by mikjoel » Wed Jun 13, 2012 7:09 pm

Try using detection set to low. It may be that you have a sensor with some differences between the pixels. If APP only uses lumiance for detection, it may pick up these paterns. detection set to low decimates the pixels and may smooth out the differences between pixels.

Also, running a smoothing filter on the files before stitching will eliminate the pixel differences, and show if I"m right or wrong.

I've tried this - there is no change in the behaviour

[mediavets]

by mediavets » Wed Jun 13, 2012 7:16 pm

The pictures where taken in handheld "Auto Modus" with fixed white balance.
I'm sure there's something wrong with the exif data - I just deleted the exif data of some sample pictures and tried to stitch them again - voila - then it works.

I've no idea what happened to the exif data of all my olympus e330 pictures ( I did not touch these pictures for 2 years now )

It is something to do with the orientation of the images.

APG is not handling the portrait orientation correctly.

I rotated the images 90 degrees counter clockwise in an image editor, saved them, and reloaded and then all is OK.

Last edited by mediavets on Wed Jun 13, 2012 7:17 pm, edited 1 time in total.

[mikjoel]

by mikjoel » Wed Jun 13, 2012 7:31 pm

Thank you -you're right, after rotating them it works perfect again.
Now I just have to figure out what "rotated" my pictures !

[marzipano]

by marzipano » Wed Jun 13, 2012 7:46 pm

I seem to recall reading somewhere that Microsoft Picture and Fax viewer loses the exif orientation info if the rotation option is used. Some of the camera companies published warnings a while ago

could it be this ?

[mikjoel]

by mikjoel » Wed Jun 13, 2012 8:03 pm

Usually I rotate my pictures with the losless transformation of "irfanview"

[DrSlony]

by DrSlony » Fri Jun 15, 2012 8:35 pm

You haven't made your source photos public so I can't check. Check them yourself, use a proper exif viewer and make sure the orientation information of the rotated images is correct. If it is not, file a bug at irfanview's website.

[AlexandreJ]

by AlexandreJ » Wed Jun 20, 2012 8:51 am

When CP are outside of image, it is quite always due to orientation of image. You can check that in one click by opening the integrated viewer in autopano.
Put the images in a group, double click on one : if what you see ( a landscape or portrait image ) doesn't match the WxH value, then you have that orientation issue. It does still happen with some cameras or software that produces wrong exif value. It then creates issue on our software. My fix is to open these image in Photoshop, and save them again to fix metadata.

[mikjoel]

by mikjoel » Thu Jun 21, 2012 5:53 pm

Hi - you're right, but I still have no idea what messed up my Exif Data - only the Exif Data of my Olympus E330 are wrong.
They are a few years old - when I stitched them the first time everything was ok - now I wanted to rebuild some panos and the are messed up.
( I used the same Version of APG now and then )