stitching problem

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nitzan assaf

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Apr 17, 2019, 1:50:47 AM4/17/19
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Hi,
I think I need help to improve my stitching errors.
i attached here 4 angels for 1 panorama. 
there are some errors all over the ceiling in all angels. 
i try to find new control points but it didn't help or found. 
can you suggest me what else can I do?
my head and tripod is well parallax maybe the tripod moved a bit i don't know why it happened  

thank you
nitzan


  
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DSC_0212_3_4_5_6.jpg
DSC_0217_18_19_20_21.jpg

John Houghton

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Apr 17, 2019, 4:54:34 AM4/17/19
to PTGui Support
Nitzan, There's nothing to show that the tripod shifted. I think parallax is responsible for the stitching errors. There's obvious parallax shift of the tripod legs at the nadir between shots and also a small shift visible at the horizontal level.  Parallax cannot be totally eliminated for a fisheye lens, but depending on what adjustments are possible with the mounting of the camera on the tripod head, it might be possible to reduce the effects.  You should be able to move the camera in the front to back direction, but maybe not in the lateral direction (side to side).  Try inserting a CD beneath the rotator so that it doesn't rotate and shoot a test panorama.  See if the CD in the stitched panorama has a nice smooth circular edge.  If it has saw tooth breaks at the image joins, then that indicates that the camera needs a lateral adjustment to correct an offset of the entrance pupil of the lens (no parallax point) from the vertical rotation axis.

John
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