View source for GoPro Lens Correction Parameters Using Imagemagick



<lens>
    <maker>GoPro</maker>
    <model>GoPro Hero3+ black &amp; 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