BackgroundInterpolatePixel  658 Magick++/lib/Magick++/Include.h   using MagickCore::BackgroundInterpolatePixel;
BackgroundInterpolatePixel 1168 magick/option.c     { "Background", BackgroundInterpolatePixel, UndefinedOptionFlag, MagickFalse },
BackgroundInterpolatePixel 4527 magick/pixel.c     case BackgroundInterpolatePixel: