ConvertRGBToHSI   461 magick/colorspace.c               ConvertRGBToHSI(red,green,blue,&X,&Y,&Z);
ConvertRGBToHSI  3548 magick/enhance.c   ConvertRGBToHSI(*red,*green,*blue,&hue,&saturation,&intensity);
ConvertRGBToHSI    63 magick/gem.h     ConvertRGBToHSI(const Quantum,const Quantum,const Quantum,double *,double *,
ConvertRGBToHSI   450 tests/validate.c   ConvertRGBToHSI(0.545877*QuantumRange,0.966567*QuantumRange,