GetPixelGray     1963 magick/colorspace.c           gray=(MagickRealType) GetPixelGray(q);
GetPixelGray      837 magick/fourier.c           source_pixels[i]=QuantumScale*GetPixelGray(p);
GetPixelGray     1275 magick/fourier.c           magnitude_pixels[i]=QuantumScale*GetPixelGray(p);
GetPixelGray     1329 magick/fourier.c           phase_pixels[i]=QuantumScale*GetPixelGray(p);