Re: [Gimp-developer] Luminosity in LAB does not agree with Wikipedia or Matlab

What you have not quite said, Richard, is that this adjustment is the one that you would need in order to correct linear RGB to standard sRGB -- so the output of GIMP is not gamma corrected. IMO this is correct, since gamma-correcting would introduce inaccuracies and also reduce precision (which in this case is already limited to 1/256.). The wikipedia images are based on converting the L to rgb by treating the AB channels as if they were zeroed. This produces an image that *looks* accurate but is mathematically inaccurate.

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