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There is such a problem.

There is shooting on a color camera with a ColorChecker. And there is shooting on another, grayscale camera with the same color checker. Is it possible to somehow convert the first RGB image to the second (Grayscale) based on the ColorChecker? I found a tutorial on how to do this in 3D Lut Creator, but it seems that the result is not completely accurate there. How else can you do this?

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    Can we assume by "black & white" you actually mean greyscale? – Tetsujin Feb 10 at 9:33
  • Tetsujin, Yes exactly – Aleksandr Borisov Feb 10 at 9:43
  • What cameras are you using? If digital, what processing is being done to obtain the color and grayscale images? What do you mean by "not completely accurate"? – xiota Feb 10 at 9:59
  • I am conducting an experiment as in the tutorial to which I left the link in the post. If you look at it, you can see that the final image in grayscale is different, which is what the author says (although it is close to the target). I would like to know what other ways there are to carry out such a conversion from RGB to grayscale. In my case, I want to get a conversion between a Canon color DSLR camera and a Basler machine vision camera. It is important for me to get the same grayscale after converting RGB to grayscale based on the ColorChecker, which was shot from both cameras – Aleksandr Borisov Feb 10 at 10:19
  • _ I found a tutorial on how to do this in 3D Lut Creator, but it seems that the result is not completely accurate_ ... how is it not accurate? Can you provide examples of your attempts? – scottbb Feb 10 at 18:07

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