From 6ba45df1e4c67d9897262a7ff5706eb404f2ea7f Mon Sep 17 00:00:00 2001
From: Cristy <mikayla-grace@urban-warrior.org>
Date: Sat, 28 Aug 2021 10:58:06 -0400
Subject: [PATCH] https://github.com/ImageMagick/ImageMagick/issues/4121

---
 magick/attribute.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/magick/attribute.c b/magick/attribute.c
index 4c0c05e964..71738d6af8 100644
--- a/magick/attribute.c
+++ b/magick/attribute.c
@@ -1576,12 +1576,12 @@ MagickExport MagickBooleanType SetImageType(Image *image,const ImageType type)
     {
       status=TransformImageColorspace(image,GRAYColorspace);
       (void) NormalizeImage(image);
-      status=BilevelImage(image,QuantumRange/2.0);
       quantize_info=AcquireQuantizeInfo(image_info);
       quantize_info->number_colors=2;
-      quantize_info->colorspace=GRAYColorspace;
+      quantize_info->dither_method=FloydSteinbergDitherMethod;
       status=QuantizeImage(quantize_info,image);
       quantize_info=DestroyQuantizeInfo(quantize_info);
+      status=MinMaxStretchImage(image,0.0,0.0,1.0);
       image->matte=MagickFalse;
       break;
     }