algorithm - Converting spectral data for given Observer/Illuminant to another Observer/Illuminant -


i'm working on simple measuring software hunterlab (color) instruments (ez line) (screenshot here) , hope can out here.

they deliver spectral data 400nm...700nm 10nm using d65 light source , 10° observer.

i have observer functions astm d65 work great , can reproduce value instrument 1:1, long measure in d65, 10° (converting xyz , cielab using tristimulus references perfect reflecting diffuser).

that done using algorithms brucelindbloom.com , easyrgb.com, both have great information!

now want add ability convert spectral data observer or illuminant (or both). cant wrap head around how that.

i guess directions enough dont know if need more references (references illuminants wavelength?) or if done other means.

ok, here answer :)

spectral data spectrophotometers corrected in far hardware illuminant , angle dont matter.

what use observer functions every single angle/illuminant, written in astm e308, convert spectral data xyz instead of using table corresponds hardware illuminant/angle.

thats lot of reference values works perfect.


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