BackgroundInterpolatePixel  661 Magick++/lib/Magick++/Include.h   using MagickCore::BackgroundInterpolatePixel;
BackgroundInterpolatePixel 1180 magick/option.c     { "Background", BackgroundInterpolatePixel, UndefinedOptionFlag, MagickFalse },
BackgroundInterpolatePixel 4519 magick/pixel.c     case BackgroundInterpolatePixel: