Support 1 mode images in several methods

python-pillow · Feb 7, 2022 · bb4ce0b · bb4ce0b
1 parent f018518
commit bb4ce0b
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Showing 2 changed files with 6 additions and 1 deletion.
diff --git a/Tests/test_imageops.py b/Tests/test_imageops.py
@@ -22,6 +22,7 @@ def getmesh(self, im):
 
 def test_sanity():
 
+    ImageOps.autocontrast(hopper("1"))
     ImageOps.autocontrast(hopper("L"))
     ImageOps.autocontrast(hopper("RGB"))
 
@@ -46,6 +47,7 @@ def test_sanity():
     ImageOps.deform(hopper("L"), deformer)
     ImageOps.deform(hopper("RGB"), deformer)
 
+    ImageOps.equalize(hopper("1"))
     ImageOps.equalize(hopper("L"))
     ImageOps.equalize(hopper("RGB"))
 
@@ -63,15 +65,18 @@ def test_sanity():
     ImageOps.grayscale(hopper("L"))
     ImageOps.grayscale(hopper("RGB"))
 
+    ImageOps.invert(hopper("1"))
     ImageOps.invert(hopper("L"))
     ImageOps.invert(hopper("RGB"))
 
     ImageOps.mirror(hopper("L"))
     ImageOps.mirror(hopper("RGB"))
 
+    ImageOps.posterize(hopper("1"), 4)
     ImageOps.posterize(hopper("L"), 4)
     ImageOps.posterize(hopper("RGB"), 4)
 
+    ImageOps.solarize(hopper("1"))
     ImageOps.solarize(hopper("L"))
     ImageOps.solarize(hopper("RGB"))
 

diff --git a/src/PIL/ImageOps.py b/src/PIL/ImageOps.py
@@ -50,7 +50,7 @@ def _lut(image, lut):
     if image.mode == "P":
         # FIXME: apply to lookup table, not image data
         raise NotImplementedError("mode P support coming soon")
-    elif image.mode in ("L", "RGB"):
+    elif image.mode in ("1", "L", "RGB"):
         if image.mode == "RGB" and len(lut) == 256:
             lut = lut + lut + lut
         return image.point(lut)