Fixing seams with control points

[Peter]

Hello! I'm new to Hugin so apologies if I'm missing something obvious. I also searched around the group here but couldn't find a post covering this issue, but may have missed it.

I'm trying to fix a seam in one of my panoramas. While the foreground and background generally seem to line up, there is a bridge in the middle that always seems to be misaligned. I've tried adding more and more control points along the bridge, as well as running and not running the various stitch and align commands in the program incase I was accidentally overwriting something, but while the bridge seam has changed a little bit with each run, it still doesn't seem to be any closer to lining up. Perhaps there is some obvious step I am missing? I was also wondering if there is a way to give certain control points more priority or weight? Or should I be removing some of the automatically generated ones to compensate? Thank you!

[David W. Jones]

Can you share the pictures and your PTO file somewhere (not on the list)?

If the bridge appears in multiple frames, you might try masking out
parts of the bridge until you get something that fits better.


--
David W. Jones
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wandering the landscape of god
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[Abrimaal]

This is common with multiplane panoramas. You can delete control points at the bottom and optimize (or align) again.
The objects closer to the camera are sharper, this is why the detector mainly places control points on the objects near you.
No worries, you can delete all points on trees and rocks. Even if they are not aligned, the stitcher will blend them. Nobody will count leaves on trees and cracks on the rocks :)
For you the most important is the horizon and the objects in the middle.

If you want to make your work easier, add exclude masks on the bottoms before searching for control points,
Then select "remove control points in masks", and remove the masks.
You should see if there are any important objects at the bottom - buildings, towers etc.  that could be duplicated or hidden on the panorama.
For these objects, add one or two control points manually.

Take care to rotate the camera only around its axis, this is very important for multiplane panoramas.