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gray point correction

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gray point correction Martin du Saire 11 Jan 17:16
dk82n0+10e7k@eGroups.com 07 Oct 20:24
dkcrl8+a8kj@eGroups.com 07 Oct 20:24
Martin du Saire
2006-01-11 17:16:22 UTC (almost 19 years ago)

gray point correction

Hi,

I am trying to understand the process by which the TheGimp calculates the "corrected" RGB values for an image given the RGB values for a "presumably" gray group of pixels (selected using the gray point eyedropper). Can anyone point me to a text, link, or outline the algorithm?

Thanks.

Martin

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