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lhunker
New Participant
November 16, 2015

Oculus DK2 Distortion Algorithm

Hi,

Does anyone know where I could find a description of the distortion algorithm used for the DK2. I am trying to implement the algorithm in hardware (on an fpga) therefore I cannot just use the sdk. So far I have been able to find a discription of the DK1 algorithm, but nothing about the DK2 algorithm.

Thanks

    3 replies

    cybereality
    Inspiring
    November 16, 2015
    I don't believe it was ever made public.
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    wheatgrinder
    Up and Coming
    November 17, 2015
    Is it possible to work it out from the distortion mesh?

    https://developer.oculus.com/doc/0.5.0. ... ml#details
    kojack
    kojack
    Honored Contributor
    November 17, 2015
    The distortion uses a catmull rom spline with around 10 coefficients. (DK1 used a simple formula with 4 coefficients).
    You can find the algorithm in the LensConfig::DistortionFnInverseApprox method in the OVR_Stereo.cpp file in the 0.4 sdk. I believe it was hidden after that (either 0.5 or 0.6 removed the source for it). You'll need to run the 0.4 sdk to find the coefficients for the DK2.
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