Image.open(tiff_file): OSError: cannot identify image file

[shentonfreude]

What did you do?

Tried to load an Image from a TIFF file on disk; code below.

I just tried to attach the file to this ticket, but GH won't let me as the file is 172MB and the limit is 10MB, so I've put it up in dropbox:
https://dl.dropboxusercontent.com/u/13625221/ARC-1980-AC80-0453.tif

What did you expect to happen?

Load up the TIFF file as an Image object I could operate on

What actually happened?

Throws an exception

What versions of Pillow and Python are you using?

Pillow-3.1.0.dist-info
Python 3.4.3 (default, Jul 13 2015, 12:18:23)
[GCC 4.2.1 Compatible Apple LLVM 6.1.0 (clang-602.0.53)] on darwin

Please include code that reproduces the issue and whenever possible, an image that demonstrates the issue. The best reproductions are self-contained scripts with minimal dependencies.

>>> from PIL import Image
>>> Image.open('/Users/chris/Pictures/ARC-1980-AC80-0453.tif')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/chris/.virtualenvs/avail_imageresizer/lib/python3.4/site-packages/PIL/Image.py", line 2295, in open
    % (filename if filename else fp))
OSError: cannot identify image file '/Users/chris/Pictures/ARC-1980-AC80-0453.tif'

This is reported by Image.py:2294, and is caused by line 2275, the factory() call:

            try:
                factory, accept = OPEN[i]
                if not accept or accept(prefix):
                    fp.seek(0)
                    im = factory(fp, filename)
                    _decompression_bomb_check(im.size)
                    return im
            except (SyntaxError, IndexError, TypeError, struct.error):

Debugging shows it throws:

SyntaxError: unknown pixel mode

(Pdb) n
> /Users/chris/.virtualenvs/avail_imageresizer/lib/python3.4/site-packages/PIL/Image.py(2271)_open_core()
-> try:
(Pdb) pp i
'TIFF'
(Pdb) n
> /Users/chris/.virtualenvs/avail_imageresizer/lib/python3.4/site-packages/PIL/Image.py(2272)_open_core()
-> factory, accept = OPEN[i]
(Pdb) n
> /Users/chris/.virtualenvs/avail_imageresizer/lib/python3.4/site-packages/PIL/Image.py(2273)_open_core()
-> if not accept or accept(prefix):
(Pdb) pp factory, accept
(<class 'PIL.TiffImagePlugin.TiffImageFile'>,
 <function _accept at 0x10c5208c8>)
(Pdb) n
> /Users/chris/.virtualenvs/avail_imageresizer/lib/python3.4/site-packages/PIL/Image.py(2274)_open_core()
-> fp.seek(0)
(Pdb) n
> /Users/chris/.virtualenvs/avail_imageresizer/lib/python3.4/site-packages/PIL/Image.py(2275)_open_core()
-> im = factory(fp, filename)
(Pdb) n
SyntaxError: unknown pixel mode
> /Users/chris/.virtualenvs/avail_imageresizer/lib/python3.4/site-packages/PIL/Image.py(2275)_open_core()
-> im = factory(fp, filename)

and that's happening in ImageFile.py:97: self._open():

        try:
            self._open()
        except (IndexError,  # end of data
                TypeError,  # end of data (ord)
                KeyError,  # unsupported mode
                EOFError,  # got header but not the first frame
                struct.error) as v:
            raise SyntaxError(v)

And this invokes the TiffImagePlugin.py where it fails at 899: self._seek(0). If I set DEBUG=True and PDB through it, we get some useful hints -- an "unsupported format".

(Pdb) n
tag: NewSubfileType (254) - type: long (4) - value: 0
tag: ImageWidth (256) - type: short (3) - value: 4808
tag: ImageLength (257) - type: short (3) - value: 6003
tag: BitsPerSample (258) - type: short (3) Tag Location: 58 - Data Location: 290 - value: (16, 16, 16)
tag: Compression (259) - type: short (3) - value: 1
tag: PhotometricInterpretation (262) - type: short (3) - value: 2
tag: Make (271) - type: string (2) Tag Location: 94 - Data Location: 296 - value: Epson   
tag: Model (272) - type: string (2) Tag Location: 106 - Data Location: 306 - value: Perfection4990  
tag: StripOffsets (273) - type: long (4) - value: (30080,)
tag: Orientation (274) - type: short (3) - value: 1
tag: SamplesPerPixel (277) - type: short (3) - value: 3
tag: RowsPerStrip (278) - type: short (3) - value: 6003
tag: StripByteCounts (279) - type: long (4) - value: (173174544,)
tag: XResolution (282) - type: rational (5) Tag Location: 178 - Data Location: 324 - value: 600.0
tag: YResolution (283) - type: rational (5) Tag Location: 190 - Data Location: 332 - value: 600.0
tag: PlanarConfiguration (284) - type: short (3) - value: 1
tag: ResolutionUnit (296) - type: short (3) - value: 2
tag: Software (305) - type: string (2) Tag Location: 226 - Data Location: 340 - value: Adobe Photoshop CS3 Macintosh
tag: DateTime (306) - type: string (2) Tag Location: 238 - Data Location: 370 - value: 2008:12:19 13:22:17
tag: XMP (700) - type: byte (1) Tag Location: 250 - Data Location: 390 - value: <table: 15290 bytes>
tag: PhotoshopInfo (34377) - type: byte (1) Tag Location: 262 - Data Location: 15680 - value: <table: 13840 bytes>
tag: ExifIFD (34665) - type: long (4) - value: 173204624
tag: ICCProfile (34675) - type: undefined (7) Tag Location: 286 - Data Location: 29520 - value: <table: 560 bytes>
> /Users/chris/.virtualenvs/avail_imageresizer/lib/python3.4/site-packages/PIL/TiffImagePlugin.py(954)_seek()
-> self.__next = self.tag_v2.next
(Pdb) n
> /Users/chris/.virtualenvs/avail_imageresizer/lib/python3.4/site-packages/PIL/TiffImagePlugin.py(955)_seek()
-> self.__frame += 1
(Pdb) n
> /Users/chris/.virtualenvs/avail_imageresizer/lib/python3.4/site-packages/PIL/TiffImagePlugin.py(939)_seek()
-> while len(self._frame_pos) <= frame:
(Pdb) n
> /Users/chris/.virtualenvs/avail_imageresizer/lib/python3.4/site-packages/PIL/TiffImagePlugin.py(956)_seek()
-> self.fp.seek(self._frame_pos[frame])
(Pdb) n
> /Users/chris/.virtualenvs/avail_imageresizer/lib/python3.4/site-packages/PIL/TiffImagePlugin.py(957)_seek()
-> self.tag_v2.load(self.fp)
(Pdb) n
tag: NewSubfileType (254) - type: long (4) - value: 0
tag: ImageWidth (256) - type: short (3) - value: 4808
tag: ImageLength (257) - type: short (3) - value: 6003
tag: BitsPerSample (258) - type: short (3) Tag Location: 58 - Data Location: 290 - value: (16, 16, 16)
tag: Compression (259) - type: short (3) - value: 1
tag: PhotometricInterpretation (262) - type: short (3) - value: 2
tag: Make (271) - type: string (2) Tag Location: 94 - Data Location: 296 - value: Epson   
tag: Model (272) - type: string (2) Tag Location: 106 - Data Location: 306 - value: Perfection4990  
tag: StripOffsets (273) - type: long (4) - value: (30080,)
tag: Orientation (274) - type: short (3) - value: 1
tag: SamplesPerPixel (277) - type: short (3) - value: 3
tag: RowsPerStrip (278) - type: short (3) - value: 6003
tag: StripByteCounts (279) - type: long (4) - value: (173174544,)
tag: XResolution (282) - type: rational (5) Tag Location: 178 - Data Location: 324 - value: 600.0
tag: YResolution (283) - type: rational (5) Tag Location: 190 - Data Location: 332 - value: 600.0
tag: PlanarConfiguration (284) - type: short (3) - value: 1
tag: ResolutionUnit (296) - type: short (3) - value: 2
tag: Software (305) - type: string (2) Tag Location: 226 - Data Location: 340 - value: Adobe Photoshop CS3 Macintosh
tag: DateTime (306) - type: string (2) Tag Location: 238 - Data Location: 370 - value: 2008:12:19 13:22:17
tag: XMP (700) - type: byte (1) Tag Location: 250 - Data Location: 390 - value: <table: 15290 bytes>
tag: PhotoshopInfo (34377) - type: byte (1) Tag Location: 262 - Data Location: 15680 - value: <table: 13840 bytes>
tag: ExifIFD (34665) - type: long (4) - value: 173204624
tag: ICCProfile (34675) - type: undefined (7) Tag Location: 286 - Data Location: 29520 - value: <table: 560 bytes>
> /Users/chris/.virtualenvs/avail_imageresizer/lib/python3.4/site-packages/PIL/TiffImagePlugin.py(959)_seek()
-> self.tag = self.ifd = ImageFileDirectory_v1.from_v2(self.tag_v2)
(Pdb) c
*** Summary ***
- compression: raw
- photometric_interpretation: 2
- planar_configuration: 1
- fill_order: 1
- size: (4808, 6003)
format key: (b'MM', 2, (1,), 1, (16, 16, 16), ())
- unsupported format
> /Users/chris/.virtualenvs/avail_imageresizer/lib/python3.4/site-packages/PIL/Image.py(2276)_open_core()

This format key is not in the OPEN_INFO dict, and I'm not seeing any others with BitsPerSample=(16, 16, 16).

And now I'm totally out of my league. :-(

The only other hit on the original error message I've seen is this thread from 2012:
http://www.aps.anl.gov/epics/tech-talk/2012/msg00622.php
where they discuss 32-bit TIFFs.

FWIW, OSX "Preview" app can open it, display, and convert to JPEG, so it seems this TIFF variant is something PIL needs to know about.

Thanks for any help you can provide!

[wiredfool]

There's currently no support in pillow for multiband images at more than 8bits per channel. That one appears to be RGB @ 16bits per channel.

There is some interest in adding that support, but it is not a small job.

[shentonfreude]

Thanks for the instant reply!

This isn't my forté so I was not able to recognize the format and don't know what a multiband image is, so I'm sorry I cannot help add support.

[wiredfool]

Multiband is something like RGB, not grayscale.

I'm going to close this as a dup. It may eventually be supported, but it's not likely to be soon.