PanoTools:
Problems with PTGui
Roger D. Williams 2005-Mar-25 07:32:11
I'm finally getting around to stitching my very first circular fisheye
images into an immersive panorama.
I had previously succeeded in stitching rectilinear images taken using W/A
lenses (usually 21mm, full frame) but I've upgraded to the latest PTGui
since then and started using my Peleng fisheye, and I'm a bit confused.
By the way, I note that if you create a control point on Image 1 and then
a matching one on Image 2, you shouldn't then start the next pair on the
SECOND image, Image 2. You have to go back to Image 1, create a control
point, and only THEN move again to Image 2. If you don't, PTGui creates
control points all by itself. Confusing to a bear of very little brain.
And producing the most, ah, INTERESTING results if you try and stitch with
them. Weirdly cockeyed. This may be, er, intuitive to the rest of the
world, but I think I'll write a Wiki note about it once I've been through
the entire process successfully.
After producing several trial panoramas with varying degrees of weirdness,
I now (suddenly) get "LZW compression not configurerd in PT Stitcher" or
some such similar message when I click to create a trial panorama.
This is confusing because nothing has changed since I was able to do this
without any problem. What did I do wrong? And what do I need to do to put
it right?
I created TIFF files of my circular fisheye images using PhotoShop 6. I
used TIFFs because at some point I want to try Hugin. The original images
are JPEGs, but I wanted to avoid further degradation of the images.
Lossless JPEGs would have been fine too, of course, but my version of
PhotoShop won't read those.
Thanks,
Roger
PS I used circular cropping to get rid of what looks like flare or
halation around the rim of the image, and PTGui now thinks that they are
170-degree images, not the 180 I originally entered. Is that a RESULT of
the cropping?
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