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tif files are not loaded

See original GitHub issue

from Augmentor import Pipeline
from skimage.io import imread

aug = Pipeline(source_directory='./',
               output_directory='out')

print(imread('sample.tif'))
aug.apply_current_pipeline('sample.tif')

Let’s try to read a file using scikit-image to be sure it is valid tiff file, and see how Augmentor fails:

Initialised with 1 image(s) found in selected directory.
Output directory set to ./out.
[[[3366 2681 1454 4441]
  [3248 2588 1490 4039]
  [3422 2731 1579 4285]
  ...,
  [3659 3072 1881 7845]
  [3733 3154 1954 8042]
  [3751 3110 1889 7561]]

 [[3357 2647 1488 4480]
  [3161 2559 1437 4037]
  [3400 2719 1584 4146]
  ...,
  [3645 3124 1882 7944]
  [3642 3137 1811 8230]
  [3690 3155 1925 7592]]

 [[3409 2690 1481 4475]
  [3343 2637 1539 4038]
  [3444 2764 1626 4112]
  ...,
  [3798 3186 1921 7724]
  [3863 3266 2034 8210]
  [3662 3080 1836 7586]]

 ...,
 [[3670 3012 1836 5635]
  [3654 3005 1810 5861]
  [3545 2963 1774 5925]
  ...,
  [3567 2858 1712 6473]
  [3706 2971 1852 7023]
  [3742 3049 1853 7311]]

 [[3677 3031 1837 5715]
  [3599 3015 1815 5769]
  [3593 2994 1817 5706]
  ...,
  [3620 2938 1757 7244]
  [3702 3052 1834 7525]
  [3696 3098 1857 7699]]

 [[3540 2968 1778 5665]
  [3572 2987 1818 5662]
  [3549 2952 1805 5710]
  ...,
  [3611 3023 1809 7788]
  [3657 3114 1822 7792]
  [3717 3168 1896 7859]]]
Traceback (most recent call last):
  File "bug.py", line 8, in <module>
    aug.apply_current_pipeline('sample.tif')
  File "/Users/Arseny/.pyenv/versions/3.6.0/lib/python3.6/site-packages/Augmentor/Pipeline.py", line 268, in apply_current_pipeline
    return self._execute(AugmentorImage(os.path.abspath(image_path), None), save_to_disk)
  File "/Users/Arseny/.pyenv/versions/3.6.0/lib/python3.6/site-packages/Augmentor/Pipeline.py", line 189, in _execute
    image = Image.open(augmentor_image.image_path)
  File "/Users/Arseny/.pyenv/versions/3.6.0/lib/python3.6/site-packages/PIL/Image.py", line 2452, in open
    % (filename if filename else fp))
OSError: cannot identify image file '/Users/Arseny/dev/kaggle/amzn/sample.tif'