reflectanceToXYZ
Converts a reflectance spectrum represented as a DoubleArray to a color in the CIE XYZ color space.
This method calculates the XYZ color by performing a dot product operation between the reflectance spectrum and the CIE color matching functions (CIE_CMF_X, CIE_CMF_Y, CIE_CMF_Z). The result is returned as a ColorXYZa object.
Return
A ColorXYZa object representing the corresponding color in the CIE XYZ color space.
Parameters
reflectance
An array of reflectance spectrum values, typically spanning the visible spectrum. This is represented as a DoubleArray with 38 wavelength samples.