CIELAB Is Icky! Do We Have Any Other Choice?
CIELAB is the ubiquitous and indispensable tool that color management is built upon. We use it to measure, specify and apply tolerances to color. And yet, 48 years ago when it was created, it was widely recognized to be less than perfect.
The biggest problem is that it is not a uniform color space (hence the need for complex color difference calculation). In addition, colors with identical hue angles are not necessarily perceptually the same hue. Changes in CIELAB values under different illuminants are largely due to a questionable decision that was made in 1931. And, gosh darn it, the a* axis points toward magenta, and not to red as we have been led to believe.
Join John as he explores if, after 48 years of slide rule pushing, are there any better alternatives?
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About Our Presenter
John Seymour, Clemson University
John Seymour is an adjunct professor at Clemson University, and works as a consultant as John the Math Guy. He holds 31 US patents on color measurement devices and has provided about 100 presentations and papers in his 30 years in the print industry.