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An eight-colour code does not seem smart for printed codes where most printers use only four inks. A colour code using cyan, magenta, yellow, white and black mi
by theclaw 8y ago
An eight-colour code does not seem smart for printed codes where most printers use only four inks. A colour code using cyan, magenta, yellow, white and black might be more reliable (although yellow could easily be confused with white). The PDF suggests 256-colour codes are supported, but that would mean luminosity is a factor, and I can't see how that would ever be reliable if the code is intended to be scanned with a camera.
- ttsda 8y agoThe codes have palettes embedded to adjust to different lighting and ink.
- ZenPsycho 8y agoYellow and magenta are also generally fugitive. Meaning that, over time, due to UV exposure, the yellow will completely fade, followed by magenta, and all you're left with is cyan and black. You'll see this in shops with advertising posters in their front window that haven't been changed in a long time.