Ends of pano stitched together that shouldn't be

[Paul Atkinson]

How do I stop PT Gui Pro from stitching the ends of a pano together?  There are no control points to connect them, so I can't figure out why it's doing it.

[John Houghton]

Paul,  Perhaps the lens focal length is being optimized to too low a value.  I suggest you don't include it in the optimization parameters.  Fix it at its known nominal value.

John

[PTGui Support]

Hi Paul,

From your description I assume your panorama is wider than 360 degrees.
PTGui. PTGui places your images in a spherical environment, so if the
panorama is wider than 360 degrees, the ends will overlap.

If the scene is not actually wider than 360 degrees, this would mean
that PTGui has not correctly optimized the lens parameters. This can
happen if the images suffer from parallax. To learn more about parallax,
watch the first video tutorial here:
https://ptgui.com/videotutorials.html

One way to remedy this:
switch to Advanced mode
go to Lens Settings
At Lens Settings, check the focal length and make sure it matches the
actual lens' focal length.
Go to Optimizer and uncheck this box: "Optimize Lens Focal Length"
Then run the optimizer.

The problem generally would not occur if the images are free from parallax.

If the above doesn't solve the problem, I'll be happy to take a look.
Please make your images and project file available for download.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

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