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Support reading signed 8-bit TIFF images

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This commit is contained in:
Andrew Murray 2023-05-04 07:54:30 +10:00
parent 9636a2aaf1
commit a4986ba986
3 changed files with 8 additions and 0 deletions
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Tests/images/8bit.s.tif Normal file
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6
Tests/test_file_tiff.py
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@ -198,6 +198,12 @@ class TestFileTiff:
with pytest.raises(OSError):
im.save(outfile)
def test_8bit_s(self):
with Image.open("Tests/images/8bit.s.tif") as im:
im.load()
assert im.mode == "L"
assert im.getpixel((50, 50)) == 184
def test_little_endian(self):
with Image.open("Tests/images/16bit.cropped.tif") as im:
assert im.getpixel((0, 0)) == 480

2
src/PIL/TiffImagePlugin.py
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@ -170,6 +170,8 @@ OPEN_INFO = {
(MM, 0, (1,), 2, (8,), ()): ("L", "L;IR"),
(II, 1, (1,), 1, (8,), ()): ("L", "L"),
(MM, 1, (1,), 1, (8,), ()): ("L", "L"),
(II, 1, (2,), 1, (8,), ()): ("L", "L"),
(MM, 1, (2,), 1, (8,), ()): ("L", "L"),
(II, 1, (1,), 2, (8,), ()): ("L", "L;R"),
(MM, 1, (1,), 2, (8,), ()): ("L", "L;R"),
(II, 1, (1,), 1, (12,), ()): ("I;16", "I;12"),