Hi.
I would like to apply Barrel Distortion to a camera stream to display the video on a Zeiss VR One. In the vrone unity3d sdk I found lookup tables for the distortion as png files and was very happy since I did not expect to find something like that. I would like to use them for the barrel distortion since LUT is fast and I think this would be the best to get this working in real time.
My problem is that I have no idea on how to use the tables. There are 6 tables, one for every color and for the X and Y axes. Does anybody have an idea how I can read the files and apply the distortion? This is the .png file for the blue color on the X axis:
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