WelshFilter       590 Magick++/lib/Magick++/Include.h   using MagickCore::WelshFilter;
WelshFilter      1113 magick/option.c     { "Welch", WelshFilter, UndefinedOptionFlag, MagickFalse },
WelshFilter      1114 magick/option.c     { "Welsh", WelshFilter, UndefinedOptionFlag, MagickTrue }, /*misspell*/
WelshFilter       784 magick/resize.c     { LanczosFilter,       WelshFilter    },  /* Welch -- parabolic (3 lobe)  */