[Radiance-general] RGB to CIE-XYZ

[Nina Wittmann]

Hi all!

I have a question about converting RGB to CIE-XYZ with xyz_rgb.cal.

For transforming XYZ into RGB I can use this lines:

rcalc -f xyz_rgb.cal  -e 'ix=$1;iy=$2;iY=$3'  -f xyz_rgb.cal \
 -e 'iX=ix/iy*iY;iZ=(1-ix-iy)/iy*iY'  \
 -e '$1=R(iX,iY,iZ) ; $2=G(iX,iY,iZ) ; $3=B(iX,iY,iZ)'


But there is also a part for calculating CIE-XYZ from RGB values, isn´t it?

Unfortenatly, I don´t know what lines I have to write.

Thanks,

Nina