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Subject: Re: Vertical line detector
From: JohnPW <johnpwatk...@gmail.com>
To: hugin and other free panoramic software <hugin-ptx@googlegroups.com>
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Well that's one of those easy situations.
When you can see the horizon clearly like that, horizontal CPs
distributed about the pano on the horizon should give you great
results. Contrary to how one might casually think, placing them far
apart (with very wide angle images) produces diminishing accuracy. As
they get closer to 180=BA apart the effect of minor errors in point
placement is amplified, just as it would be by placing them closer to
0=BA apart.
Was this at Long Point Light or were you up on a communications tower?

On Nov 3, 7:15=A0am, Robert Krawitz <r...@alum.mit.edu> wrote:
>
> I ask because I took a panorama from a tower in Provincetown, MA, at
> the tip of Cape Cod. =A0About 3/4 of the horizon from that spot is the
> ocean, and a misalignment of 1 pixel was very apparent; I had to
> correct it by editing the final output.
>