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I'm experimenting on automatic colorization of 3D Scenes in image space with libtorch. The model input is the L component of an image and predicts the AB values to colorize it.

I am wondering what is the most efficient method of converting the RGB values of the pixels to CIELAB and then fetch them to do the predictions?

talonmies
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HjelpMeg
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  • Are you searching for functions in C++ to perform such conversions? You could take a look at http://www.easyrgb.com/en/math.php as suggested by this thread: https://stackoverflow.com/questions/4205908/rgb-to-cielab-conversion. You could quickly write C++ code based on the pseudo code given in that site. I have implemented C++ functions based on that site and it worked for me. – Hari Sep 29 '22 at 14:11
  • LAB<->RGB is going to be negligible compared to the amount of work done in those models. – Yakov Galka Sep 29 '22 at 17:20

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