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Date: Thu, 24 May 2012 16:33:50 +1000
From: Greg 'groggy' Lehey <groog...@gmail.com>
To: hugin-ptx@googlegroups.com
Subject: Re: [hugin-ptx] Is there an easier way to deal with the sky?
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References: <b27770e0-8223-44a7-9072-bdcb07730f52@googlegroups.com> <20120523221141.GO23212@postle.net>
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On Wednesday, 23 May 2012 at 23:11:43 +0100, Bruno Postle wrote:
> On Wed 23-May-2012 at 14:03 -0700, ecs1749 wrote:
>> The sky continues to be the troublesome part  to build a complete
>> globe.  Is there an easier way to just "fill-it" with something so
>> the missing parts don't come out black?
>
> You can reuse bits of sky from photos in the panorama, see this mini
> tutorial: http://www.flickr.com/photos/36383814@N00/6327106374

Interesting.  That's very helpful.  I didn't know you could add an
image more than once.  I've tried this on some problem panoramas that
I have been working on, and it works well.  Is there a reason why you
put this on Flickr rather than on the panotools Wiki?

I had difficultly with a few points, in particular how to get the
images where you want.  Clearly you can't attach any control points,
because the areas don't match.  Here's what I did:

1.  Load all the images once and create control points normally.
2.  Mask out the areas I didn't want.
3.  Locate an image with a similar area and load it.  Mask out the
    parts of that image that I didn't want.
4.  In the Images tab, select the image and set yaw to an appropriate
    value, mainly trial and error.

That worked.  My results, both before and after, are at
http://www.lemis.com/grog/photos/Photos.php?dirdate=20120510 There are
two views here.  RCC-1.orig is stitched with no correction, RCC-1-1
was an attempt with GIMP, and RCC-1-2 is filled according to your
method.  The same goes for RCC-2, RCC-2-1 and RCC-2-2.  You'll note
that in this case I was able to get rid of the tripod shadow too.

A couple of problems: the Move/Drag functionality in the fast panorama
preview doesn't move the additional images, so it seems that you need
to move things into place first.  Also reloading the .pto files puts
the additional images in different places.

So, my question: is this the correct way of doing it?  Or is there an
easier way?

Greg
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