[Numpy-discussion] [OT] any image io module that works with python3?

Christoph Gohlke cgohlke@uci....
Sat Mar 12 13:49:35 CST 2011



On 3/12/2011 8:45 AM, Nadav Horesh wrote:
> I forgot to mention that I work on linux (gentoo x86-64).Here are my achievements till now:
>
> 1. PythonMagick: Needs boost which I do not have it avaiable on python3
Boost works on Python 3.1. You might need to compile it.
> 2. Pygame: I have the stable version(1.9.1) should it work?
You need the developer version from svn.
> 3. FreeImage: I installed FreeImagePy on python3, but it doesn't work yet.
FreeImagePy is unmaintained, does not work on Python 3, and has problems 
on 64 bit platforms. Just wrap the functions you need in ctypes.
> 4. PIL: I patched setup.py and map.c so "python3 setup.py build" is working, but:
Try replace "Hans Häggström" with "Hans Haggstrom" in PIL/WalImageFile.py

Christoph

>
> nadav@nadav_home /dev/shm/PIL-1.1.7-py3 $ sudo python3.1  setup.py install
> /usr/lib64/python3.1/distutils/dist.py:259: UserWarning: Unknown distribution option: 'ext_comp_args'
>    warnings.warn(msg)
> running install
> running build
> running build_py
> running build_ext
> --------------------------------------------------------------------
> PIL 1.1.7 SETUP SUMMARY
> --------------------------------------------------------------------
> version       1.1.7
> platform      linux2 3.1.3 (r313:86834, Feb 25 2011, 11:08:33)
>                [GCC 4.4.4]
> --------------------------------------------------------------------
> --- TKINTER support available
> --- JPEG support available
> --- ZLIB (PNG/ZIP) support available
> --- FREETYPE2 support available
> --- LITTLECMS support available
>
> .
> .
> .
>
> byte-compiling /usr/lib64/python3.1/site-packages/PIL/WalImageFile.py to WalImageFile.pyc
> Traceback (most recent call last):
>    File "setup.py", line 520, in<module>
>      setup(*(), **configuration)  # old school :-)
>    File "/usr/lib64/python3.1/distutils/core.py", line 149, in setup
>      dist.run_commands()
>    File "/usr/lib64/python3.1/distutils/dist.py", line 919, in run_commands
>      self.run_command(cmd)
>    File "/usr/lib64/python3.1/distutils/dist.py", line 938, in run_command
>      cmd_obj.run()
>    File "/usr/lib64/python3.1/distutils/command/install.py", line 592, in run
>      self.run_command(cmd_name)
>    File "/usr/lib64/python3.1/distutils/cmd.py", line 315, in run_command
>      self.distribution.run_command(command)
>    File "/usr/lib64/python3.1/distutils/dist.py", line 938, in run_command
>      cmd_obj.run()
>    File "/usr/lib64/python3.1/distutils/command/install_lib.py", line 98, in run
>      self.byte_compile(outfiles)
>    File "/usr/lib64/python3.1/distutils/command/install_lib.py", line 135, in byte_compile
>      dry_run=self.dry_run)
>    File "/usr/lib64/python3.1/distutils/util.py", line 560, in byte_compile
>      compile(file, cfile, dfile)
>    File "/usr/lib64/python3.1/py_compile.py", line 137, in compile
>      codestring = f.read()
>    File "/usr/lib64/python3.1/codecs.py", line 300, in decode
>      (result, consumed) = self._buffer_decode(data, self.errors, final)
> UnicodeDecodeError: 'utf8' codec can't decode byte 0xe4 in position 1909: invalid continuation byte
>
>
>
> Any idea on how to correct it? Any elegant way to avoid byte compiling?
>
>    Nadav
>
>
> ________________________________________
> From: numpy-discussion-bounces@scipy.org [numpy-discussion-bounces@scipy.org] On Behalf Of Zachary Pincus [zachary.pincus@yale.edu]
> Sent: 12 March 2011 14:35
> To: Discussion of Numerical Python
> Subject: Re: [Numpy-discussion] [OT] any image io module that works with        python3?
>
> Here's a ctypes interface to FreeImage that I wrote a while back and
> was since cleaned up (and maintained) by the scikits.image folk:
>
> https://github.com/stefanv/scikits.image/blob/master/scikits/image/io/_plugins/freeimage_plugin.py
>
> If it doesn't work out of the box on python 3, then it should be
> pretty simple to fix.
>
> Zach
>
>
>
> On Mar 12, 2011, at 4:40 AM, Christoph Gohlke wrote:
>
>>
>>
>> On 3/12/2011 1:08 AM, Nadav Horesh wrote:
>>> Having numpy, scipy, and matplotlib working reasonably with
>>> python3, a
>>> major piece of code I miss for a major python3 migration is an
>>> image IO.
>>> I found that pylab's imread works fine for png image, but I need to
>>> read
>>> all the other image format as well as png and jpeg output.
>>> Any hints (including advices how easyly construct my own module) are
>>> appreciated.
>>> Nadav.
>>>
>>
>> On Windows, PIL (private port at
>> <http://www.lfd.uci.edu/~gohlke/pythonlibs/#pil>), PythonMagick
>> <http://www.imagemagick.org/download/python/>, and pygame 1.9.2pre
>> <http://www.pygame.org>  are working reasonably well for image IO. Also
>> the FreeImage library<http://freeimage.sourceforge.net/>  is easy to
>> use
>> with ctypes<http://docs.python.org/py3k/library/ctypes.html>.
>>
>> Christoph
>> _______________________________________________
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>
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