RobertsKernel     976 magick/morphology.c     case RobertsKernel:
RobertsKernel    1376 magick/morphology.c     case RobertsKernel:
RobertsKernel    1146 magick/option.c     { "Roberts", RobertsKernel, UndefinedOptionFlag, MagickFalse },