Hullo Greg,
On Sun, 10 Jul 2011 10:22:58 +1000, Groogle <groog...@gmail.com> wrote:
I've read the current thread on "registering" images with some
interest but not much understanding. I think that my issue is
similar, but to avoid muddying the waters, I'm starting a separate
thread.
I'm trying to create time-lapse images according to the instructions
at http://wiki.panotools.org/Align_a_stack_of_photos . That doesn't
work, possibly because hugin has changed since then: the 'g' command
gives me no control points whatsoever. So I selected "Create control
points" from the Images window and got a very bad fit.
The three images in question were all taken from a tripod which wasn't
moved during the time between them (about 20 minutes). The problem
appears to be that I accidentally changed the focal length of the lens
between the first image and the other two. Clearly I need to scale
the images to the same size.
According to the instructions, this shouldn't be an issue, but I can't
see a way of telling any of the component programs the focal length of
each image. Is there a way to do so? Or is there another way? This
was supposed to be a "simple" test before I attacked something bigger,
so a solution just for this case isn't of much help.
There's more description, including the images, at
http://www.lemis.com/grog/diary-mar2011.php#time-lapse
The resultant images are shown in the diary entry mentioned above.
The original ones are at:
http://www.lemis.com/grog/Photos/20110330/tiny/Verandah-before.jpeg
http://www.lemis.com/grog/Photos/20110330/tiny/Verandah-during.jpeg
http://www.lemis.com/grog/Photos/20110330/tiny/Verandah-after.jpeg
This mightn't be a lot of help, but this is what happened when I had a
look at your pics.
Firstly, I found the the original images to be quite low resolution,
300x225. I was refused connection when attempting to access other links
provided.
Hugin-2011.3.0 (hg02e5d9618f49) loaded the images OK, and set 'after' and
'during' to lens 0 with a FOV=44.7 deg. Image 'before' was given lens 1
with FOV=41.2 deg.
I used CPfind to create control points, and did an initial optimisation,
after which the Fast preview Window opened blank, finally the FPW failed
to respond and hugin disappeared in a puff of smoke. I would guess that
there is a problem with the code. If I can reproduce this I'll file a bug
report.
I tried again, and this time the FPW opened OK. The alignment was not very
good so I started getting rid of bad control points, and re-optimising,
but found it hard to get a good result.
I'm not sure, but suspect that the low resolution may not be helping.
I'll have a bit more of play with with the images and if I turn up
anything useful I'll post the story.
Cheers,
--
Regards,
Terry Duell
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