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Added note to pi-pan-tilt part 2 on calibration

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Chris Hodapp 2016-10-05 18:48:20 -04:00
parent 85fb22dc3c
commit 1c4e478a41
1 changed files with 8 additions and 3 deletions
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posts/2016-10-04-pi-pan-tilt-2.md
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@ -102,9 +102,13 @@ calculated:
[![Hugin comparison](../assets_external/2016-10-04-pi-pan-tilt-2/hugin-comparison.png){width=100%}](../assets_external/2016-10-04-pi-pan-tilt-2/hugin-comparison.png) [![Hugin comparison](../assets_external/2016-10-04-pi-pan-tilt-2/hugin-comparison.png){width=100%}](../assets_external/2016-10-04-pi-pan-tilt-2/hugin-comparison.png)
They sort of match up, though pitch deviates a bit. I believe that's They sort of match up, though pitch deviates a bit. I believe that's
because I shifted the pitch of the entire thing to straighten it out because I shifted the pitch of the entire thing to straighten it out,
(or perhaps it did this automatically to center it), but I haven't or perhaps Hugin did this automatically to center it, but I haven't
examined this in detail yet. examined this in detail yet. (Helpfully, the same process can be used
to [calibrate lenses][hugin_lens] and compute the real focal length at
the same time - which can be particularly necessary for cases like
this where I'm trying to get the most out of cheap optics and when the
Exif tags won't include focal lengths.)
A full-resolution JPEG of the result (after automated stitching, A full-resolution JPEG of the result (after automated stitching,
exposure fusion, lens correction, and so on), is linked below: exposure fusion, lens correction, and so on), is linked below:
@ -141,3 +145,4 @@ images!
[pto]: http://hugin.sourceforge.net/docs/manual/PTOptimizer.html [pto]: http://hugin.sourceforge.net/docs/manual/PTOptimizer.html
[pto_gen]: http://wiki.panotools.org/Pto_gen [pto_gen]: http://wiki.panotools.org/Pto_gen
[pto_var]: http://wiki.panotools.org/Pto_var [pto_var]: http://wiki.panotools.org/Pto_var
[hugin_lens]: http://hugin.sourceforge.net/tutorials/calibration/en.shtml