DitherImageTag 1624 magick/quantize.c proceed=SetImageProgress(image,DitherImageTag,(MagickOffsetType) y, DitherImageTag 1841 magick/quantize.c proceed=SetImageProgress(image,DitherImageTag,p->offset,p->span); DitherImageTag 1579 magick/threshold.c proceed=SetImageProgress(image,DitherImageTag,progress++,image->rows);