Seonglae ChoStill a Standard of color space until now
red negative become positive
This is canonical color space to describe SPD and then find it’s mapping into sum of each color cell’s integral
CIE XYZ 3D Plot
considered device independent so Devices can find mappings of their mdevice specific values to corresponding CIE XYZ values. This provides a canonical space to match between devices
All human use this Color standard but
CIE XYZ is based on 17 British Standard Observers
10 by Wright, 7 by Guild