Use TIFF orientation

This commit is contained in:
Andrew Murray 2019-09-13 22:36:26 +10:00
parent 929c817014
commit 1b70a4c6b5
10 changed files with 28 additions and 0 deletions

BIN
Tests/images/g4_orientation_1.tif Executable file

Binary file not shown.

BIN
Tests/images/g4_orientation_2.tif Executable file

Binary file not shown.

BIN
Tests/images/g4_orientation_3.tif Executable file

Binary file not shown.

BIN
Tests/images/g4_orientation_4.tif Executable file

Binary file not shown.

BIN
Tests/images/g4_orientation_5.tif Executable file

Binary file not shown.

BIN
Tests/images/g4_orientation_6.tif Executable file

Binary file not shown.

BIN
Tests/images/g4_orientation_7.tif Executable file

Binary file not shown.

BIN
Tests/images/g4_orientation_8.tif Executable file

Binary file not shown.

View File

@ -831,3 +831,12 @@ class TestFileLibTiff(LibTiffTestCase):
self.assert_image_equal_tofile(
im, "Tests/images/old-style-jpeg-compression.png"
)
def test_orientation(self):
base_im = Image.open("Tests/images/g4_orientation_1.tif")
for i in range(2, 9):
im = Image.open("Tests/images/g4_orientation_" + str(i) + ".tif")
im.load()
self.assert_image_similar(base_im, im, 0.7)

View File

@ -1098,6 +1098,20 @@ class TiffImageFile(ImageFile.ImageFile):
return super(TiffImageFile, self).load()
def load_end(self):
if self._tile_orientation:
method = {
2: Image.FLIP_LEFT_RIGHT,
3: Image.ROTATE_180,
4: Image.FLIP_TOP_BOTTOM,
5: Image.TRANSPOSE,
6: Image.ROTATE_270,
7: Image.TRANSVERSE,
8: Image.ROTATE_90,
}.get(self._tile_orientation)
if method is not None:
self.im = self.im.transpose(method)
self._size = self.im.size
# allow closing if we're on the first frame, there's no next
# This is the ImageFile.load path only, libtiff specific below.
if not self._is_animated:
@ -1181,6 +1195,9 @@ class TiffImageFile(ImageFile.ImageFile):
self.tile = []
self.readonly = 0
self.load_end()
# libtiff closed the fp in a, we need to close self.fp, if possible
if self._exclusive_fp and not self._is_animated:
self.fp.close()
@ -1388,6 +1405,8 @@ class TiffImageFile(ImageFile.ImageFile):
palette = [o8(b // 256) for b in self.tag_v2[COLORMAP]]
self.palette = ImagePalette.raw("RGB;L", b"".join(palette))
self._tile_orientation = self.tag_v2.get(0x0112)
def _close__fp(self):
try:
if self.__fp != self.fp: