Resolving Barrel Distortion on a GoPro Hero3

[Aaron Huslage]

I posted this here as well (with pictures): http://publiclab.org/notes/huslage/05-01-2013/resolving-barrel-distortion-on-a-gopro-hero3

On our recent balloon mapping expedition in Qatar, we used a GoPro Hero3 Black to capture images. This camera doesn't put any lens information into the EXIF data, so post-processing the images is quite difficult.

I've tried to use photoshop's "Lens Correction" filter to remove the distortion, but this produces sub-par results. And even after doing this in Photoshop, creating the map proves labor intensive at best. I'd like to hear any ideas about how to combat this problem and how to correct things properly.

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Aaron Huslage
CTO - Tethr
+1-919-600-1712

[Mathew Lippincott]

I'd defer to the KAP forums on this one, they have some great answers on camera gear.  Its my first go-to: 

http://arch.ced.berkeley.edu/kap/discuss/index.php?p=/discussion/3532/gopro-lens-correction/p1

Hanselpedia on the KAP forums wrote a tutorial on using the OSS Hugin to do it:

http://www.fotovlieger.nl/techniek/gopro_lens_correction_with_hugin

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Mathew Lippincott

publiclaboratory.org

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[Michele Tobias]

Thanks for asking and answering this!  I'm putting together a visible and IR pair of GoPro Hero 2s for vegetation research with my kite and I've been needing to figure this out.  I'm excited that there's a solution with Hugin.  Thanks a bunch!

Michele

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Michele Tobias, PhD

Geospatial Consulting Service
Information Center for the Environment
University of California, Davis

mmto...@ucdavis.edu
http://geospatial.ucdavis.edu/
http://sites.google.com/site/mtobiasresearch/
		

[Aaron Huslage]

I've been messing with this. It doesn't seem to apply exactly to the Hero 3 which has a different lens geometry. I'm still investigating though.

[Alex]

FYI, proDAD Defishr can remove barrel distortion, but I don't know whether it supports images or video only.