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First and Last columns of 360 pano not joining

PostPosted: Sat Sep 05, 2015 3:49 pm
by circumpunct
I can't get any joints at all between the first and last columns of a 360 spherical pano.

There is plenty of good data and the columns join easily by hand, so I guess I have a setting wrong somewhere, but I can;t find anything.

Any suggestions?

Attached are images of the un-joined columns, plus a sample of the manual join showing plenty of good links.

Re: First and Last columns of 360 pano not joining

PostPosted: Sat Sep 05, 2015 4:30 pm
by mediavets
What camera, lens and pano head did you use to shoot this pano?

It looks as if you perhaps used some sort of auto exposure mode when shooting, this can cause exposures to be sufficiently different to affect the ability of APP/APG to detect control points automatically.

Re: First and Last columns of 360 pano not joining

PostPosted: Sat Sep 05, 2015 5:14 pm
by Panoram1x
Hi

You could also check a couple of things.

1- If APG has correctly identified the focal and crop factor of your camera/lens.

2- And if in the information window for the crop tool, cutting area is set to full sphere.

Re: First and Last columns of 360 pano not joining

PostPosted: Sun Sep 06, 2015 7:47 am
by circumpunct
mediavets wrote:What camera, lens and pano head did you use to shoot this pano?

It looks as if you perhaps used some sort of auto exposure mode when shooting, this can cause exposures to be sufficiently different to affect the ability of APP/APG to detect control points automatically.


Gigapan with Nikon P90, everything on manual, no flash, no auto exposure.

There is a very slight difference between first and last column due to changes in ambient lighting, but I doubt that's the problem. There is plenty of detail and the software faultlessly stitches the two columns if I manually select the images.

You can see from the clips that the columns are clear. The software is not even trying to link them. I have this on all other sessions so it is not particular to these images. It stitches everything like a boss, but wont even try for the first and last columns.

Re: First and Last columns of 360 pano not joining

PostPosted: Sun Sep 06, 2015 8:22 am
by circumpunct
Panoram1x wrote:Hi

You could also check a couple of things.

1- If APG has correctly identified the focal and crop factor of your camera/lens.

2- And if in the information window for the crop tool, cutting area is set to full sphere.


1) Yes, spot on. I guess the camera attaches the information to the image.

2) Yes. Under Settings, Panorama, Projection and crop, I have selected Spherical and have tried both Clamp to Panorama and Maximum Projection. It fails with both.

Re: First and Last columns of 360 pano not joining  [SOLVED]

PostPosted: Sun Sep 06, 2015 8:36 am
by mediavets
circumpunct wrote:
mediavets wrote:What camera, lens and pano head did you use to shoot this pano?

It looks as if you perhaps used some sort of auto exposure mode when shooting, this can cause exposures to be sufficiently different to affect the ability of APP/APG to detect control points automatically.


Gigapan with Nikon P90, everything on manual, no flash, no auto exposure.

There is a very slight difference between first and last column due to changes in ambient lighting, but I doubt that's the problem. There is plenty of detail and the software faultlessly stitches the two columns if I manually select the images.

You can see from the clips that the columns are clear. The software is not even trying to link them. I have this on all other sessions so it is not particular to these images. It stitches everything like a boss, but wont even try for the first and last columns.


Are you using the Gigapan Import wizard with the 360 option selected?

Of course the Gigapan heads are not really intended to be used to shoot panos with 360 HFOV, but...