On Thu, 2009-12-03 at 20:16 -0500, Brian Sullivan wrote:
> I am using Hugin Version 2009.2.0.4461 on Vista to process shots taken
> with a Peleng fisheye on a Nikon D50 using Nodal Ninja 2 jig.
> 
> I am getting pretty good results using standard settings and auto
> alignment with Auto-SIFT-C. Sometimes after the alignment I get the
> bad fit indication, sometimes good fit (with different picture sets).
> The resultant stitching, equirectangular tiff and QTVR panorama though
> seem to be OK regardless of the align bad/good information.

The warning is based on the average distance of the control point pairs
in the stitched panorama.

The error is measured in output pixels, so if you scale the panorama
down, it will have a lower error. It is only calculated when you
reoptimize though.

> Is there something I should be expecting in the output based on the
> align warning that I am missing? From where I am sitting the
> information seems not very useful.

Zoom in to one of your panos and look at long lines. See if you can spot
any kinks.

If you have a lot of control points with a high error on sharp lines you
will probably notice misalignment in the stitch, so this warning is
useful sometimes. If you have only control points with a high error in
sky, water, or something else where the seem won't be noticeable, you
probably won't see any error, even though Hugin may report a bad fit.

If you get 'Very bad fit' you should do something to fix it, but any of
the other states will do if your Panorama doesn't have many long lines.

-James

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