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Interpreting Distance scores

Open RickCarlino opened this issue 11 years ago • 2 comments

Correction: 600 has shown to be a close match rather than the previously stated 6,000

In comparing two colors, I have seen distances ranging from 0 to over 20,000. Most of the time, scores near 6,000 seem to be a close match, while they appear to be less of a match as you get away from that number.

Is this a safe assumption? How do you interpret the distance score numbers?

RickCarlino avatar Aug 11 '14 15:08 RickCarlino

Hey, sorry for the long delay! I was gone at Army training and just now saw this.

I'm not really sure what to make of those numbers. I'm by no means an expert at the L_a_b color space. In fact, I don't think it's even the most accurate way of interpreting human vision.

If you had some screenshots of comparisons that would be really interesting to see.

joshsmith avatar Aug 26 '14 06:08 joshsmith

@RickCarlino 8 years later, it turns out that this is probably due to a long-standing math error in color perception geometry. Here’s a link to the paper on the subject if you’re curious: https://www.pnas.org/doi/10.1073/pnas.2119753119#sec-8

joshsmith avatar Sep 12 '22 13:09 joshsmith