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Tests for 12bit tiff rawmode

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wiredfool 2013-11-20 16:54:49 -08:00
parent 0ffc1a848a
commit b73ae9c27a
3 changed files with 26 additions and 0 deletions
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Tests/images/12bit.cropped.tif Normal file
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Tests/images/12in16bit.tif Normal file
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26
Tests/test_file_tiff.py
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@ -102,3 +102,29 @@ def test_big_endian():
else: else:
assert_equal(b[0], b'\x01') assert_equal(b[0], b'\x01')
assert_equal(b[1], b'\xe0') assert_equal(b[1], b'\xe0')
def test_12bit_rawmode():
""" Are we generating the same interpretation of the image as Imagemagick is? """
#Image.DEBUG = True
im = Image.open('Tests/images/12bit.cropped.tif')
# to make the target --
# convert 12bit.cropped.tif -depth 16 tmp.tif
# convert tmp.tif -evaluate RightShift 4 12in16bit2.tif
# imagemagick will auto scale so that a 12bit FFF is 16bit FFF0,
# so we need to unshift so that the integer values are the same.
im2 = Image.open('Tests/images/12in16bit.tif')
if Image.DEBUG:
print (im.getpixel((0,0)))
print (im.getpixel((0,1)))
print (im.getpixel((0,2)))
print (im2.getpixel((0,0)))
print (im2.getpixel((0,1)))
print (im2.getpixel((0,2)))
assert_image_equal(im, im2)