GoPro Lens Correction Parameters Using Imagemagick
<lens>
<maker>GoPro</maker> <model>GoPro Hero3+ black & compatibles</model> <model lang="en">fixed lens</model> <model lang="de">festes Objektiv</model> <mount>goProHero3+</mount> <cropfactor>5.42</cropfactor> <aspect-ratio>4:3</aspect-ratio> <calibration> <distortion model="ptlens" focal="15" a="0.01049" b="0.01663" c="-0.40901"/> </calibration>
</lens>
magick .\gopro-image.jpg -distort barrel "0.01049 0.01663 -0.40901" out.png
GoPro 3 Black parameters:
magick GoPro.JPG -distort barrel "0.06335 -0.18432 0.13009" out2.png
magick GoPro.JPG -distort barrel "0.010 -0.32 0" out.png
De-barrel distortion information:
https://im.snibgo.com/debarrel.htm
Parameters for various action cameras:
https://github.com/lensfun/lensfun/blob/master/data/db/actioncams.xml#L132