[Coral-List] Pics correction software

Dennis Hubbard dennis.hubbard at oberlin.edu
Thu Sep 13 09:32:41 EDT 2012


Two perhaps dead-end suggestions. First, if you can get the lens
specifications, you could probably use GIS ortho-rectification software to
take out the stretch. Alternately, you can designate the absolute positions
of specific points in your photos an the software will "rubber sheet" the
image back to the real world. If you have a GIS guru available (s)he should
be able to help you. ALternately, you might contact the camera
manufaxcturer. They might have software that could post-process your
images, essentially doing what the camera does automatically.

Good luck,


On Thu, Sep 13, 2012 at 8:42 AM, Martina Milanese <
m.milanese at studioassociatogaia.com> wrote:

> Hi all,
> I have a problem with some uw photos I took while following up a long-term
> field experiment where measuring is crucial. May anyone help?
> I took the pics using the photo mode of my Sony XR550 camcorder, which
> features a slight wide-angle lens. I¹ve done this several times in the past
> and the camera automatically corrects the associated distortion when a
> specific photo format is selected. Very good and smooth. For reasons I
> don¹t
> know, however, this time the usual camera setting was overturned. Of course
> I realised it too late... I was horrified at finding out that all my pics
> are stretched in the four corners and the straight rulers are so gently
> curved...
> Does anyone know about a software that may correct this, essentially as the
> camera does when the appropriate setting is selected?
> I seem to remember reading a paper where something similar was used but
> can¹t really find it again. Any other advice (besides getting back in the
> water and repeat the session, of course) is welcome!
> Cheers,
> Martina
> --
> Dr. Martina Milanese, PhD
> Studio Associato Gaia SNC dei Dottori Antonio Sarà e Martina Milanese
> www.studioassociatogaia.com
> m.milanese at studioassociatogaia.com
> martinix at iol.it
> Mob. ITA +39-338-1196672
>         NED +31-6-45227107
>         GER +49-1522-3166767
> Skype m.milanese
> Msn   martinix at iol.it
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Dennis Hubbard
Dept of Geology-Oberlin College Oberlin OH 44074
(440) 775-8346

* "When you get on the wrong train.... every stop is the wrong stop"*
 Benjamin Stein: "*Ludes, A Ballad of the Drug and the Dream*"

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