From aaronichie2000 at gmail.com  Mon Aug  1 12:10:25 2011
From: aaronichie2000 at gmail.com (AARON NICHIE)
Date: Mon, 1 Aug 2011 10:10:25 +0000
Subject: [Image-SIG] HELP HELP
Message-ID: <CAN47U+w5esOvUED2oaZQTpvqaHwTXmqBt=qdGOtLT0=xiic2UQ@mail.gmail.com>

Am having difficulty in installing PIL and Django-Photologue. I want
Ubuntu terminal commands
to install both. The error is:

aaronichie at aaronichie-Satellite-P105:~/Downloads/django-photologue-2.3$
python setup.py install
running install
Checking .pth file support in /usr/local/lib/python2.7/dist-packages/
error: can't create or remove files in install directory

The following error occurred while trying to add or remove files in the
installation directory:

    [Errno 13] Permission denied:
'/usr/local/lib/python2.7/dist-packages/test-easy-install-2710.pth'

The installation directory you specified (via --install-dir, --prefix, or
the distutils default setting) was:

    /usr/local/lib/python2.7/dist-packages/



-- 
Aaron Nichie

From mquitt at caltech.edu  Thu Aug  4 04:39:36 2011
From: mquitt at caltech.edu (Marissa Quitt)
Date: Wed, 3 Aug 2011 19:39:36 -0700
Subject: [Image-SIG] size of PixelAccess object
Message-ID: <CAFzdZcE-LBjbTqQ7wJKAncdHnJsGkYmDPXjOjUHsY73OuJCNDw@mail.gmail.com>

Hello,

I have just started using PIL, and so far it has been great!  I am
wondering if there is an easy way to determine the size (width,
height) of a PixelAccess object.

Thanks,

--Marissa

From charlie.clark at clark-consulting.eu  Thu Aug  4 21:22:28 2011
From: charlie.clark at clark-consulting.eu (Charlie Clark)
Date: Thu, 04 Aug 2011 21:22:28 +0200
Subject: [Image-SIG] HELP HELP
In-Reply-To: <CAN47U+w5esOvUED2oaZQTpvqaHwTXmqBt=qdGOtLT0=xiic2UQ@mail.gmail.com>
References: <CAN47U+w5esOvUED2oaZQTpvqaHwTXmqBt=qdGOtLT0=xiic2UQ@mail.gmail.com>
Message-ID: <op.vzperqt55mynk9@fuchsia.local>

Am 01.08.2011, 12:10 Uhr, schrieb AARON NICHIE <aaronichie2000 at gmail.com>:

> Am having difficulty in installing PIL and Django-Photologue. I want
> Ubuntu terminal commands
> to install both. The error is:
> aaronichie at aaronichie-Satellite-P105:~/Downloads/django-photologue-2.3$
> python setup.py install
> running install
> Checking .pth file support in /usr/local/lib/python2.7/dist-packages/
> error: can't create or remove files in install directory
> The following error occurred while trying to add or remove files in the
> installation directory:
>    [Errno 13] Permission denied:
> '/usr/local/lib/python2.7/dist-packages/test-easy-install-2710.pth'
> The installation directory you specified (via --install-dir, --prefix, or
> the distutils default setting) was:
>    /usr/local/lib/python2.7/dist-packages/

Dear Aaron,

this sounds like your user doesn't have the permission to install packages  
in the system Python. You can probably install PIL for your system using  
aptitude.

Charlie
-- 
Charlie Clark
Managing Director
Clark Consulting & Research
German Office
Helmholtzstr. 20
D?sseldorf
D- 40215
Tel: +49-211-600-3657
Mobile: +49-178-782-6226

From charlie.clark at clark-consulting.eu  Thu Aug  4 21:28:21 2011
From: charlie.clark at clark-consulting.eu (Charlie Clark)
Date: Thu, 04 Aug 2011 21:28:21 +0200
Subject: [Image-SIG] pil rotate 90 bug ?
In-Reply-To: <4E312F4F.2030403@shef.ac.uk>
References: <4E312F4F.2030403@shef.ac.uk>
Message-ID: <op.vzpe1jo15mynk9@fuchsia.local>

Am 28.07.2011, 11:43 Uhr, schrieb Jeremy Craven  
<c.j.craven at sheffield.ac.uk>:

> I have a program that has been working fine rotating images by arbitrary  
> angles.
> I just found that if I specify 90 degrees exactly then the image goes  
> crazy: only appears in left hand half of image and every other line is  
> black and image is stretched vertically.
> Any ideas if this is a bug or I am perhaps doing something in a  
> non-recommended way.
> I attach a cut down version of the code which shows the problem. It  
> reads "test_in.tif". It rotates it 90.0 and writes "test.tif". It  
> rotates it 89.99 and writes "test1.tif". The second output file looks  
> fine. The first is wonky.

Dear Jeremy,

first off - it's extremely uncourteous to post such a large e-mail to a  
mailing list. Much better to put the attachments on a temporary site  
somewhere. Secondly, all the images are black to me so I can't see any  
difference between them.

Charlie
-- 
Charlie Clark
Managing Director
Clark Consulting & Research
German Office
Helmholtzstr. 20
D?sseldorf
D- 40215
Tel: +49-211-600-3657
Mobile: +49-178-782-6226

From ggpolo at gmail.com  Thu Aug  4 22:24:51 2011
From: ggpolo at gmail.com (Guilherme Polo)
Date: Thu, 4 Aug 2011 17:24:51 -0300
Subject: [Image-SIG] pil rotate 90 bug ?
In-Reply-To: <4E312F4F.2030403@shef.ac.uk>
References: <4E312F4F.2030403@shef.ac.uk>
Message-ID: <CADrNvOd08YCijdMC9OiW1LRk0DbLsB3OLyvKn64+eUh05jeCPQ@mail.gmail.com>

2011/7/28 Jeremy Craven <c.j.craven at sheffield.ac.uk>:
> I have a program that has been working fine rotating images by arbitrary
> angles.
>
> I just found that if I specify 90 degrees exactly then the image goes crazy:
> only appears in left hand half of image and every other line is black and
> image is stretched vertically.
>
> Any ideas if this is a bug or I am perhaps doing something in a
> non-recommended way.
>

It is a bug, it doesn't rotate the image by 90 degrees.

Looking through PIL code, I would think the problem is that you have
these "special images" with mode as "I;16B", which PIL marks as
IMAGING_TYPE_SPECIAL. The code paths used for such special things
probably are under tested.

> I attach a cut down version of the code which shows the problem. It reads
> "test_in.tif". It rotates it 90.0 and writes "test.tif". It rotates it 89.99
> and writes "test1.tif". The second output file looks fine. The first is
> wonky.
>
> I'm using version 1.1.7
>
> Thanks for listening
>
> Jeremy
>
> --
> *********************************************************************************
>
> Dr C. Jeremy Craven
> Department of Molecular Biology and Biotechnology
> University of Sheffield,
> Firth Court, Western Bank
> S10 2TN Sheffield UK



-- 
-- Guilherme H. Polo Goncalves

From cannon.el at gmail.com  Thu Aug  4 22:38:21 2011
From: cannon.el at gmail.com (Edward Cannon)
Date: Thu, 4 Aug 2011 13:38:21 -0700
Subject: [Image-SIG] pil rotate 90 bug ?
In-Reply-To: <CADrNvOd08YCijdMC9OiW1LRk0DbLsB3OLyvKn64+eUh05jeCPQ@mail.gmail.com>
References: <4E312F4F.2030403@shef.ac.uk>
	<CADrNvOd08YCijdMC9OiW1LRk0DbLsB3OLyvKn64+eUh05jeCPQ@mail.gmail.com>
Message-ID: <8AC16BE2-4290-44CD-97F4-20CFCAA7347F@gmail.com>

A possible workaround is to convert the images to some more standard format ie im.convert("rgb"). If you need to rotate by multiples of 90 the transform method works and is faster. 



On Aug 4, 2011, at 1:24 PM, Guilherme Polo <ggpolo at gmail.com> wrote:

> 2011/7/28 Jeremy Craven <c.j.craven at sheffield.ac.uk>:
>> I have a program that has been working fine rotating images by arbitrary
>> angles.
>> 
>> I just found that if I specify 90 degrees exactly then the image goes crazy:
>> only appears in left hand half of image and every other line is black and
>> image is stretched vertically.
>> 
>> Any ideas if this is a bug or I am perhaps doing something in a
>> non-recommended way.
>> 
> 
> It is a bug, it doesn't rotate the image by 90 degrees.
> 
> Looking through PIL code, I would think the problem is that you have
> these "special images" with mode as "I;16B", which PIL marks as
> IMAGING_TYPE_SPECIAL. The code paths used for such special things
> probably are under tested.
> 
>> I attach a cut down version of the code which shows the problem. It reads
>> "test_in.tif". It rotates it 90.0 and writes "test.tif". It rotates it 89.99
>> and writes "test1.tif". The second output file looks fine. The first is
>> wonky.
>> 
>> I'm using version 1.1.7
>> 
>> Thanks for listening
>> 
>> Jeremy
>> 
>> --
>> *********************************************************************************
>> 
>> Dr C. Jeremy Craven
>> Department of Molecular Biology and Biotechnology
>> University of Sheffield,
>> Firth Court, Western Bank
>> S10 2TN Sheffield UK
> 
> 
> 
> -- 
> -- Guilherme H. Polo Goncalves
> _______________________________________________
> Image-SIG maillist  -  Image-SIG at python.org
> http://mail.python.org/mailman/listinfo/image-sig

From donn.ingle at gmail.com  Fri Aug  5 11:26:28 2011
From: donn.ingle at gmail.com (donn)
Date: Fri, 05 Aug 2011 11:26:28 +0200
Subject: [Image-SIG] pil rotate 90 bug ?
In-Reply-To: <4E312F4F.2030403@shef.ac.uk>
References: <4E312F4F.2030403@shef.ac.uk>
Message-ID: <4E3BB744.4000402@gmail.com>

Aw man, a 2.3mb email -- on my scant monthly b/w. Please don't do this 
on a list. Pretty please.

\d

From chris.mit7 at gmail.com  Fri Aug  5 01:14:24 2011
From: chris.mit7 at gmail.com (Chris Mitchell)
Date: Thu, 4 Aug 2011 19:14:24 -0400
Subject: [Image-SIG] pil rotate 90 bug ?
In-Reply-To: <8AC16BE2-4290-44CD-97F4-20CFCAA7347F@gmail.com>
References: <4E312F4F.2030403@shef.ac.uk>
	<CADrNvOd08YCijdMC9OiW1LRk0DbLsB3OLyvKn64+eUh05jeCPQ@mail.gmail.com>
	<8AC16BE2-4290-44CD-97F4-20CFCAA7347F@gmail.com>
Message-ID: <CAK_U6ODr=fbMgpD4-kz-6evprbffy4X48scnpD2R3wGsM9_wcQ@mail.gmail.com>

You could load the image into numpy, rotate the array, then read it back out
to pil.
On Aug 4, 2011 4:39 PM, "Edward Cannon" <cannon.el at gmail.com> wrote:
> A possible workaround is to convert the images to some more standard
format ie im.convert("rgb"). If you need to rotate by multiples of 90 the
transform method works and is faster.
>
>
>
> On Aug 4, 2011, at 1:24 PM, Guilherme Polo <ggpolo at gmail.com> wrote:
>
>> 2011/7/28 Jeremy Craven <c.j.craven at sheffield.ac.uk>:
>>> I have a program that has been working fine rotating images by arbitrary
>>> angles.
>>>
>>> I just found that if I specify 90 degrees exactly then the image goes
crazy:
>>> only appears in left hand half of image and every other line is black
and
>>> image is stretched vertically.
>>>
>>> Any ideas if this is a bug or I am perhaps doing something in a
>>> non-recommended way.
>>>
>>
>> It is a bug, it doesn't rotate the image by 90 degrees.
>>
>> Looking through PIL code, I would think the problem is that you have
>> these "special images" with mode as "I;16B", which PIL marks as
>> IMAGING_TYPE_SPECIAL. The code paths used for such special things
>> probably are under tested.
>>
>>> I attach a cut down version of the code which shows the problem. It
reads
>>> "test_in.tif". It rotates it 90.0 and writes "test.tif". It rotates it
89.99
>>> and writes "test1.tif". The second output file looks fine. The first is
>>> wonky.
>>>
>>> I'm using version 1.1.7
>>>
>>> Thanks for listening
>>>
>>> Jeremy
>>>
>>> --
>>>
*********************************************************************************
>>>
>>> Dr C. Jeremy Craven
>>> Department of Molecular Biology and Biotechnology
>>> University of Sheffield,
>>> Firth Court, Western Bank
>>> S10 2TN Sheffield UK
>>
>>
>>
>> --
>> -- Guilherme H. Polo Goncalves
>> _______________________________________________
>> Image-SIG maillist - Image-SIG at python.org
>> http://mail.python.org/mailman/listinfo/image-sig
> _______________________________________________
> Image-SIG maillist - Image-SIG at python.org
> http://mail.python.org/mailman/listinfo/image-sig
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From ingo at quitch.net  Tue Aug  9 18:18:42 2011
From: ingo at quitch.net (Ingo Randolf)
Date: Tue, 9 Aug 2011 18:18:42 +0200
Subject: [Image-SIG] PIL for python 3.2
Message-ID: <B85CFCE0-9B29-4F6B-B866-ED90F870AF32@quitch.net>

hello.

i want to use PIL with python 3.2.
Any ideas when PIL will be available for python32?

thanks
ingo

From spoon.reloaded at gmail.com  Fri Aug 12 05:16:45 2011
From: spoon.reloaded at gmail.com (Spoon Reloaded)
Date: Thu, 11 Aug 2011 20:16:45 -0700
Subject: [Image-SIG] Difference between ImageOps.invert() and
	ImageChops.invert()?
Message-ID: <CABkj8=aT+xqx5vLKXj7vB1BC0PbCMx1564SyKPpr8jBSUYtEQA@mail.gmail.com>

Don't the methods ImageOps.invert() and ImageChops.invert() do the
same thing? If so, why do we need two different implementations (the
latter calls a C function while the former builds a lookup table and
uses the image transforming functions)? It seems to me that if they do
the same thing then one should call the other or something.

From gregcorradini at gmail.com  Sun Aug  7 18:09:02 2011
From: gregcorradini at gmail.com (Greg Corradini)
Date: Sun, 7 Aug 2011 09:09:02 -0700
Subject: [Image-SIG] Scan Image for blank spots using PIL
Message-ID: <CAHwr+YmjYLWYbXXk7aqLKo_2MBmSmXqZcPCCBtnorRn4kMqJbg@mail.gmail.com>

Hello,
I want to use PIL to scan a newly created image for possible corrupt (blank)
pixels.

The PIL documentation doesn't seem to mention what value a blank pixel might
have (I assume it would come back as None).  I'm not sure what to test for.

I see the Image module has a verify
function<http://www.pythonware.com/library/pil/handbook/image.htm>,
but I'm not sure if that covers validating that pixels are not blank.

Any ideas?

Thanks
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From gregcorradini at gmail.com  Sun Aug  7 20:06:34 2011
From: gregcorradini at gmail.com (Greg Corradini)
Date: Sun, 7 Aug 2011 11:06:34 -0700
Subject: [Image-SIG] Scan Image for Blank Spots using PIL
Message-ID: <CAHwr+Ynbrji4CtR-BjOSOE1f0FVJaX+3WMoxDvGvM8Am4gEtew@mail.gmail.com>

Hello,
I want to use PIL to scan a newly created image for possible corrupt (blank)
pixels.

The PIL documentation doesn't seem to mention what value a blank pixel might
have (I assume it would come back as None).  I'm not sure what to test for.

I see the Image module has a verify
function<http://www.pythonware.com/library/pil/handbook/image.htm>,
but I'm not sure if that covers validating that pixels are not blank.

Any ideas?

Thanks
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From simonf at simonf.com  Mon Aug  8 20:33:00 2011
From: simonf at simonf.com (Simon (Vsevolod) Ilyushchenko)
Date: Mon, 8 Aug 2011 11:33:00 -0700
Subject: [Image-SIG] 16-bit signed tiffs
Message-ID: <CAO8peET1MZmQBP9B47UmWJF1D8_t9omNjrmdm3vEJFoVCRUAxA@mail.gmail.com>

Hi,

I've tried to read a tiff file of type Int16 (signed int). PIL is able to
open a file, but can't read any data from it due to an unknown mode.

Indeed, Storage.c only recognizes the following 16-bit modes: I;16, I;16L,
I;16B. However, TiffImagePlugin.py thinks the mode should be I;16S.

Is this a known mismatch? Is it enough to just add I;16S to the check in
Storage.c, or is there more coding needed to make it really support signed
ints?

Thanks,
Simon
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From jwt at OnJapan.net  Mon Aug 15 01:21:51 2011
From: jwt at OnJapan.net (Jim Tittsler)
Date: Mon, 15 Aug 2011 11:21:51 +1200
Subject: [Image-SIG] Scan Image for blank spots using PIL
In-Reply-To: <CAHwr+YmjYLWYbXXk7aqLKo_2MBmSmXqZcPCCBtnorRn4kMqJbg@mail.gmail.com>
References: <CAHwr+YmjYLWYbXXk7aqLKo_2MBmSmXqZcPCCBtnorRn4kMqJbg@mail.gmail.com>
Message-ID: <4E48588F.2080803@OnJapan.net>

On 2011-08-08 04:09, Greg Corradini wrote:
> I want to use PIL to scan a newly created image for possible corrupt
> (blank) pixels.
> 
> The PIL documentation doesn't seem to mention what value a blank pixel
> might have (I assume it would come back as None).  I'm not sure what to
> test for.

It is going to depend on (a) the format of the image file and (b) your
definition of what a "blank pixel" is.  (Black?  White?  Something else?)

You could do a brute force check of each pixel's value, or depending on
your definition, you might be able to use something like the histogram
method to see if any pixels meet your criteria.

> I see the Image module has a verify function
> <http://www.pythonware.com/library/pil/handbook/image.htm>, but I'm not
> sure if that covers validating that pixels are not blank.

I believe it only detects if PIL will be able to load the specified
image file.


-- 
Jim Tittsler     http://www.OnJapan.net/      GPG: 0x01159DB6
Python Starship  http://Starship.Python.net/crew/jwt/
Mailman IRC      irc://irc.freenode.net/#mailman

From gregcorradini at gmail.com  Mon Aug 15 05:12:26 2011
From: gregcorradini at gmail.com (Greg Corradini)
Date: Sun, 14 Aug 2011 20:12:26 -0700
Subject: [Image-SIG] Scan Image for blank spots using PIL
In-Reply-To: <4E48588F.2080803@OnJapan.net>
References: <CAHwr+YmjYLWYbXXk7aqLKo_2MBmSmXqZcPCCBtnorRn4kMqJbg@mail.gmail.com>
	<4E48588F.2080803@OnJapan.net>
Message-ID: <CAHwr+Y=_47TZ-KuKR+RMJCGcAd7JZFK_yjbZTnruQt8NqYgJxQ@mail.gmail.com>

Thanks Jim. Comments below.

> It is going to depend on (a) the format of the image file and (b) your
> definition of what a "blank pixel" is.  (Black?  White?  Something else?)

I'm testing RGBA png(s) for blank spots. Considering that each band except
the Alpha band in my image has black and white min/max values, then I'm
guessing that any minimum Alpha values of black (0) indicate a blank spot
(this is only a guess and I'm always open to better educated guesses ;-) ).

Here is the extrema min/max output  for each band before editing a png:

>>> import ImageStat
>>> stat = ImageStat.Stat(img)
>>> stat.extrema
[(0, 255), (0, 255), (0, 255), (191, 255)]

After using Gimp to erase cells from the png, the extrema min/max output
looks like this:

>>> stat.extrema
[(0, 255), (0, 255), (0, 255), (0, 255)]


So i guess I'll test for that

> You could do a brute force check of each pixel's value, or depending on
> your definition, you might be able to use something like the histogram
> method to see if any pixels meet your criteria.





On Sun, Aug 14, 2011 at 4:21 PM, Jim Tittsler <jwt at onjapan.net> wrote:

> On 2011-08-08 04:09, Greg Corradini wrote:
> > I want to use PIL to scan a newly created image for possible corrupt
> > (blank) pixels.
> >
> > The PIL documentation doesn't seem to mention what value a blank pixel
> > might have (I assume it would come back as None).  I'm not sure what to
> > test for.
>
> It is going to depend on (a) the format of the image file and (b) your
> definition of what a "blank pixel" is.  (Black?  White?  Something else?)
>
> You could do a brute force check of each pixel's value, or depending on
> your definition, you might be able to use something like the histogram
> method to see if any pixels meet your criteria.
>
> > I see the Image module has a verify function
> > <http://www.pythonware.com/library/pil/handbook/image.htm>, but I'm not
> > sure if that covers validating that pixels are not blank.
>
> I believe it only detects if PIL will be able to load the specified
> image file.
>
>
> --
> Jim Tittsler     http://www.OnJapan.net/      GPG: 0x01159DB6
> Python Starship  http://Starship.Python.net/crew/jwt/
> Mailman IRC      irc://irc.freenode.net/#mailman
> _______________________________________________
> Image-SIG maillist  -  Image-SIG at python.org
> http://mail.python.org/mailman/listinfo/image-sig
>



-- 
Greg
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From Andrew_Seymour at scee.net  Tue Aug 16 12:51:10 2011
From: Andrew_Seymour at scee.net (Andrew_Seymour at scee.net)
Date: Tue, 16 Aug 2011 11:51:10 +0100
Subject: [Image-SIG] PIL and Maya 64bit
Message-ID: <OFB3EF43BE.9520901E-ON802578EE.003ABC99-802578EE.003BD37A@scee.net>

Hi,

I've integrated PIL into some of our tools for Maya. In particular I use 
it to create 16bit TIFFs.

In Maya 2010 64 bit which I believe uses Python 2.6.1 everything worked 
fine. I got compiled versions of PIL from: 
http://www.lfd.uci.edu/~gohlke/pythonlibs/
which worked great.

I'm now preparing to move to the latest version of 64bit Maya which I 
believe uses Python 2.6.4.

I'm having problems with importing the _imaging module.

With the path added to the system path I first got this error:

# Error: ImportError: file <maya console> line 7: DLL load failed: The 
specified module could not be found. # 

I then used dependency walker to try and find out what was missing. I then 
tried to include a 64 bit version of msvcr90.dll in the PIL directory.
This resulted in the following error:

# Error: ImportError: file <maya console> line 1: DLL load failed: A 
dynamic link library (DLL) initialization routine failed. #



I personally don't have the know how or software to compile PIL locally as 
I am a Technical Artist and not a fully blown programmer.

Can you help or advise? Am I on the right track with the msvcr90.dll?

Andrew Seymour
Principal Technical Artist
Sony Computer Entertainment Europe Limited
http://eu.playstation.com


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If you have received this email in error please notify postmaster at scee.net
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From aaronichie2000 at gmail.com  Wed Aug 17 14:40:27 2011
From: aaronichie2000 at gmail.com (AARON NICHIE)
Date: Wed, 17 Aug 2011 12:40:27 +0000
Subject: [Image-SIG] Help
Message-ID: <CAN47U+wnX3nQP7G9UyPDLN_0gFR6W5yDrvbYihmoLxZ+hgdV-Q@mail.gmail.com>

Having a little problem adding certain support to mine PIL in Ubuntu 11.04.
The test gives:

--- PIL CORE support ok
*** TKINTER support not installed
*** JPEG support not installed
*** ZLIB (PNG/ZIP) support not installed
*** FREETYPE2 support not installed
--- LITTLECMS support ok

Running selftest:
*****************************************************************
Failure in example:
try:
 _info(Image.open(os.path.join(ROOT, "Images/lena.jpg")))
except IOError, v:
 print v
from line #24 of selftest.testimage
Expected: ('JPEG', 'RGB', (128, 128))
Got: decoder jpeg not available
1 items had failures:
   1 of  57 in selftest.testimage
***Test Failed*** 1 failures.
*** 1 tests of 57 failed.


Any help for me???????????/

-- 
Aaron Nichie
University of Ghana
Computer Engineering
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From Andrew_Seymour at scee.net  Wed Aug 17 15:24:29 2011
From: Andrew_Seymour at scee.net (Andrew_Seymour at scee.net)
Date: Wed, 17 Aug 2011 14:24:29 +0100
Subject: [Image-SIG] Help with PIL on 64 bit Windows 7 and Maya
Message-ID: <OF04887443.20652DE3-ON802578EF.0049267D-802578EF.0049DCBE@scee.net>

Hi,

I've integrated PIL into some of our tools for Maya. In particular I use 
it to create 16bit TIFFs.

In Maya 2010 64 bit which I believe uses Python 2.6.1 everything worked 
fine. I got compiled versions of PIL from: 
http://www.lfd.uci.edu/~gohlke/pythonlibs/
which worked great.

I'm now preparing to move to the latest version of 64bit Maya which I 
believe uses Python 2.6.4.

I'm having problems with importing the _imaging module.

With the path added to the system path I first got this error:

# Error: ImportError: file <maya console> line 7: DLL load failed: The 
specified module could not be found. # 

I then used dependency walker to try and find out what was missing. I then 
tried to include a 64 bit version of msvcr90.dll in the PIL directory.
This resulted in the following error:

# Error: ImportError: file <maya console> line 1: DLL load failed: A 
dynamic link library (DLL) initialization routine failed. #

Windows Error:

Microsoft Visual C++ Runtime Errror!
R6034
An application has made an attempt to load the C runtime library 
incorrectly.
Please contact the application's support team for more information.



Looking a little deeper PIL worked fine in 64 bit with Python 2.6.4 that I 
installed for windows from the python site:
Installed:      Python 2.6.4 (r264:75708, Oct 26 2009, 07:36:50) [MSC 
v.1500 64 bit (AMD64)] on win32

But, with Maya the compiled python included looks slightly different:
Maya:           Python 2.6.4 (r264:75706, May 19 2011, 13:53:43) [MSC 
v.1600 64 bit (AMD64)] on win32

Would this be the reason behind the issues, and if so is there a process I 
can follow to fix it?


I personally don't have the know how or software to compile PIL locally as 
I am a Technical Artist and not a fully blown programmer, so any help 
would be greatly appreciated.

Can you help or advise?

Andrew Seymour
Principal Technical Artist
Sony Computer Entertainment Europe Limited
http://eu.playstation.com


**********************************************************************
This email and any files transmitted with it are confidential and intended 
solely for the use of the individual or entity to whom they are addressed. 
If you have received this email in error please notify postmaster at scee.net
This footnote also confirms that this email message has been checked for 
all known viruses.
Sony Computer Entertainment Europe Limited
Registered Office: 10 Great Marlborough Street, London W1F 7LP, United 
Kingdom
Registered in England: 3277793
**********************************************************************

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From mauricio at marcan.me  Wed Aug 17 18:38:48 2011
From: mauricio at marcan.me (Mauricio Martinez)
Date: Wed, 17 Aug 2011 11:38:48 -0500
Subject: [Image-SIG] Help inmstalling Python Imaging Library  in mac os 10, 7
Message-ID: <7E6D8596-9184-4BF8-9A88-0C5A7BD588A5@marcan.me>

Hi I want to install the Python Imaging Library in my mac 10,7 but I have 0 skills with code and terminal, could won give me precise instructions on how to install it.

Thanks for the amazon job you  are doing.

regards  

Mauricio

From cgohlke at uci.edu  Thu Aug 18 03:03:17 2011
From: cgohlke at uci.edu (Christoph Gohlke)
Date: Wed, 17 Aug 2011 18:03:17 -0700
Subject: [Image-SIG] Help with PIL on 64 bit Windows 7 and Maya
In-Reply-To: <OF04887443.20652DE3-ON802578EF.0049267D-802578EF.0049DCBE@scee.net>
References: <OF04887443.20652DE3-ON802578EF.0049267D-802578EF.0049DCBE@scee.net>
Message-ID: <4E4C64D5.1060703@uci.edu>

Dear Andrew,

apparently the new version of Maya includes a custom version of Python, 
which is built with the Visual Studio 2010 compiler (version 16) and the 
MSVCR10 C runtime library. The standard CPython 2.6 distribution, and 
almost all existing extension package binaries, use the Visual Studio 
2008 compiler and the MSVCR90 C runtime library.

The correct solution would be to build PIL with the Visual Studio 2010 
compiler and link against the custom python26.lib from Maya.

As a workaround you could try to provide an external msvcr90 manifest 
file for the existing PIL pyd extensions. This might not work correctly 
because the use of different C runtime libraries in one process can 
cause crashes or memory corruptions.

Christoph


On 8/17/2011 6:24 AM, Andrew_Seymour at scee.net wrote:
> Hi,
>
> I've integrated PIL into some of our tools for Maya. In particular I use
> it to create 16bit TIFFs.
>
> In Maya 2010 64 bit which I believe uses Python 2.6.1 everything worked
> fine. I got compiled versions of PIL from:
> http://www.lfd.uci.edu/~gohlke/pythonlibs/
> <http://www.lfd.uci.edu/~gohlke/pythonlibs/>
> which worked great.
>
> I'm now preparing to move to the latest version of 64bit Maya which I
> believe uses Python 2.6.4.
>
> I'm having problems with importing the _imaging module.
>
> With the path added to the system path I first got this error:
>
> # Error: ImportError: file <maya console> line 7: DLL load failed: The
> specified module could not be found. #
>
> I then used dependency walker to try and find out what was missing. I
> then tried to include a 64 bit version of msvcr90.dll in the PIL directory.
> This resulted in the following error:
>
> # Error: ImportError: file <maya console> line 1: DLL load failed: A
> dynamic link library (DLL) initialization routine failed. #
>
> Windows Error:
>
> Microsoft Visual C++ Runtime Errror!
> R6034
> An application has made an attempt to load the C runtime library
> incorrectly.
> Please contact the application's support team for more information.
>
>
>
> Looking a little deeper PIL worked fine in 64 bit with Python 2.6.4 that
> I installed for windows from the python site:
> Installed: *Python 2.6.4 (r264:75708, Oct 26 2009, 07:36:50) [MSC v.1500
> 64 bit (AMD64)] on win32*
>
> But, with Maya the compiled python included looks slightly different:
> Maya: *Python 2.6.4 (r264:75706, May 19 2011, 13:53:43) [MSC v.1600 64
> bit (AMD64)] on win32*
>
> Would this be the reason behind the issues, and if so is there a process
> I can follow to fix it?
>
>
> I personally don't have the know how or software to compile PIL locally
> as I am a Technical Artist and not a fully blown programmer, so any help
> would be greatly appreciated.
>
> Can you help or advise?
>
> Andrew Seymour
> Principal Technical Artist
> Sony Computer Entertainment Europe Limited
> http://eu.playstation.com <http://eu.playstation.com/>
>
>
> **********************************************************************
> This email and any files transmitted with it are confidential and
> intended solely for the use of the individual or entity to whom they are
> addressed. If you have received this email in error please notify
> postmaster at scee.net
> This footnote also confirms that this email message has been checked for
> all known viruses.
> Sony Computer Entertainment Europe Limited
> Registered Office: 10 Great Marlborough Street, London W1F 7LP, United
> Kingdom
> Registered in England: 3277793
> **********************************************************************
>
> P */Please consider the environment before printing this e-mail/*
>
>
> _______________________________________________
> Image-SIG maillist  -  Image-SIG at python.org
> http://mail.python.org/mailman/listinfo/image-sig

From john at johnnypops.co.uk  Thu Aug 18 01:48:40 2011
From: john at johnnypops.co.uk (John Popplewell)
Date: Thu, 18 Aug 2011 00:48:40 +0100
Subject: [Image-SIG] Support for RLE8/4 MS BMP files
Message-ID: <20110817235534@johnnypops.co.uk>

Hi all,

my first post to this list. I'm a fairly long-time Python user, mostly
on Windows systems (sigh), and use PIL extensively.

Recently, an application of mine, used by one of my customers,
encountered a series of MS BMP files masquerading as JPEG images. Most
of them loaded OK, but about 50 of them (out of ~10,000) wouldn't - they
turned out to be RLE8 encoded. We have no control over what we are sent,
and a possible work-round, using wxPython, didn't work-out as it's also
a really old version.

As I've come across a few RLE BMP images over the years, and I really
needed it to work for my customer, I decided to add the functionality to
PIL.

For various practical reasons, the application is stuck using
Python-2.3, PIL-1.1.4 and wxPython-2.4, so I had fun re-installing
Visual Studio 6, building zlib and libjpeg and getting PIL to compile.

I got a basic RLE8 decoder working quite quickly, and looked around for
test-images, finding these:

http://entropymine.com/jason/bmpsuite/
http://bmptestsuite.sourceforge.net/

I also noticed that the Mozilla Firefox project had added extensive BMP
support:

https://bugzilla.mozilla.org/show_bug.cgi?id=108271

and turned out to handle all the test images.

Anyway, lets just say I got a bit carried away and added support for
RLE8 and RLE4 compression as well for a few oddities, finding a couple
of (fixed) bugs in PIL-1.1.4 in the process. One of the test images,
'width-times-height-overflow.bmp', still causes a nasty seg-fault in
PIL-1.1.7.

I've got a current HG version of PIL and I'm building with MSVC on XP,
but I can test on Linux too.

My question is, how do I go about contibuting my new 'BmpRleDecode.c'
and associated changes?

best regards,
John Popplewell.


From charlie.clark at clark-consulting.eu  Thu Aug 18 14:26:17 2011
From: charlie.clark at clark-consulting.eu (Charlie Clark)
Date: Thu, 18 Aug 2011 14:26:17 +0200
Subject: [Image-SIG] Help
In-Reply-To: <CAN47U+wnX3nQP7G9UyPDLN_0gFR6W5yDrvbYihmoLxZ+hgdV-Q@mail.gmail.com>
References: <CAN47U+wnX3nQP7G9UyPDLN_0gFR6W5yDrvbYihmoLxZ+hgdV-Q@mail.gmail.com>
Message-ID: <op.v0est3ii5mynk9@fuchsia.local>

Dear Aaron,

Am 17.08.2011, 14:40 Uhr, schrieb AARON NICHIE <aaronichie2000 at gmail.com>:

> Having a little problem adding certain support to mine PIL in Ubuntu  
> 11.04.
> The test gives:
> --- PIL CORE support ok
> *** TKINTER support not installed
> *** JPEG support not installed
> *** ZLIB (PNG/ZIP) support not installed
> *** FREETYPE2 support not installed
> --- LITTLECMS support ok

Above is a list of libraries that PIL needs to be able to provide full  
functionality. You need to install at least libjpeg to be able to work  
with JPG files. You can install the libraries using the relevent software  
manager in Ubuntu.

Charlie
-- 
Charlie Clark
Managing Director
Clark Consulting & Research
German Office
Helmholtzstr. 20
D?sseldorf
D- 40215
Tel: +49-211-600-3657
Mobile: +49-178-782-6226

From charlie.clark at clark-consulting.eu  Thu Aug 18 14:27:48 2011
From: charlie.clark at clark-consulting.eu (Charlie Clark)
Date: Thu, 18 Aug 2011 14:27:48 +0200
Subject: [Image-SIG] Help inmstalling Python Imaging Library in mac os
 10, 7
In-Reply-To: <7E6D8596-9184-4BF8-9A88-0C5A7BD588A5@marcan.me>
References: <7E6D8596-9184-4BF8-9A88-0C5A7BD588A5@marcan.me>
Message-ID: <op.v0eswmzb5mynk9@fuchsia.local>

Am 17.08.2011, 18:38 Uhr, schrieb Mauricio Martinez <mauricio at marcan.me>:

> Hi I want to install the Python Imaging Library in my mac 10,7 but I  
> have 0 skills with code and terminal, could won give me precise  
> instructions on how to install it.
> Thanks for the amazon job you  are doing.

Dear Mauricio,

assuming you have already installed Python your best bet is to enter:

sudo pip install pillow

In Terminal

Charlie Clark
-- 
Charlie Clark
Managing Director
Clark Consulting & Research
German Office
Helmholtzstr. 20
D?sseldorf
D- 40215
Tel: +49-211-600-3657
Mobile: +49-178-782-6226

From ingo at quitch.net  Tue Aug 23 14:29:33 2011
From: ingo at quitch.net (Ingo Randolf)
Date: Tue, 23 Aug 2011 14:29:33 +0200
Subject: [Image-SIG] PIL for python 3.2
In-Reply-To: <B85CFCE0-9B29-4F6B-B866-ED90F870AF32@quitch.net>
References: <B85CFCE0-9B29-4F6B-B866-ED90F870AF32@quitch.net>
Message-ID: <67A211AC-868A-440C-9093-8F8F6703F09A@quitch.net>

hi all.

i had a look into porting PIL for use with python 3.2

well, it does compile now (osx 10.6), i can import PIL in python3.2, but when i try to load an image i get this traceback:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/site-packages/PIL/Image.py", line 1983, in open
    raise IOError("cannot identify image file")
IOError: cannot identify image file

this happens with any image-kind... 

i am new to python, and to PIL... so i have no idea why this happens...

it would be great if PIL would be able to be used with python3.2!

maybe somebody more skilled than me can make it run?

here is the modified version:
http://www.bildstrom.at/dl/Imaging-1.1.7_3.2.zip

ingo



Am 09.08.2011 um 18:18 schrieb Ingo Randolf:

> hello.
> 
> i want to use PIL with python 3.2.
> Any ideas when PIL will be available for python32?
> 
> thanks
> ingo
> _______________________________________________
> Image-SIG maillist  -  Image-SIG at python.org
> http://mail.python.org/mailman/listinfo/image-sig


From ingo at quitch.net  Fri Aug 26 17:19:21 2011
From: ingo at quitch.net (Ingo Randolf)
Date: Fri, 26 Aug 2011 17:19:21 +0200
Subject: [Image-SIG] PIL for python 3.2
In-Reply-To: <67A211AC-868A-440C-9093-8F8F6703F09A@quitch.net>
References: <B85CFCE0-9B29-4F6B-B866-ED90F870AF32@quitch.net>
	<67A211AC-868A-440C-9093-8F8F6703F09A@quitch.net>
Message-ID: <83BCB2B1-44D4-465D-A4A2-8188B8A5B15E@quitch.net>

Hello.

another attempt to make PIL run with python3.2 on osx 10.6.7

I found an unofficial release of PIL for py3.2:
https://github.com/sloonz/pil-py3k/tree/a75c372ed17b3d06c0d58c1db03c9215da9c4bbb

it compiles and installs fine with python3.2

when i want to open an image i get:
IOError: cannot identify image file

with any type of image...

compiling PIL says:
--- TKINTER support ok
--- JPEG support ok
--- ZLIB (PNG/ZIP) support ok
--- FREETYPE2 support ok


i do:
>>> from PIL import Image
>>> im = Image.open("path/to/my/image.jpg")

i am on: osx 10.6.7

what am i doing wrong?


please help.
thanks
ingo


Am 23.08.2011 um 14:29 schrieb Ingo Randolf:

> hi all.
> 
> i had a look into porting PIL for use with python 3.2
> 
> well, it does compile now (osx 10.6), i can import PIL in python3.2, but when i try to load an image i get this traceback:
> 
> Traceback (most recent call last):
>  File "<stdin>", line 1, in <module>
>  File "/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/site-packages/PIL/Image.py", line 1983, in open
>    raise IOError("cannot identify image file")
> IOError: cannot identify image file
> 
> this happens with any image-kind... 
> 
> i am new to python, and to PIL... so i have no idea why this happens...
> 
> it would be great if PIL would be able to be used with python3.2!
> 
> maybe somebody more skilled than me can make it run?
> 
> here is the modified version:
> http://www.bildstrom.at/dl/Imaging-1.1.7_3.2.zip
> 
> ingo
> 
> 
> 
> Am 09.08.2011 um 18:18 schrieb Ingo Randolf:
> 
>> hello.
>> 
>> i want to use PIL with python 3.2.
>> Any ideas when PIL will be available for python32?
>> 
>> thanks
>> ingo
>> _______________________________________________
>> Image-SIG maillist  -  Image-SIG at python.org
>> http://mail.python.org/mailman/listinfo/image-sig
> 
> _______________________________________________
> Image-SIG maillist  -  Image-SIG at python.org
> http://mail.python.org/mailman/listinfo/image-sig


From charlie.clark at clark-consulting.eu  Fri Aug 26 17:42:54 2011
From: charlie.clark at clark-consulting.eu (Charlie Clark)
Date: Fri, 26 Aug 2011 17:42:54 +0200
Subject: [Image-SIG] PIL for python 3.2
In-Reply-To: <83BCB2B1-44D4-465D-A4A2-8188B8A5B15E@quitch.net>
References: <B85CFCE0-9B29-4F6B-B866-ED90F870AF32@quitch.net>
	<67A211AC-868A-440C-9093-8F8F6703F09A@quitch.net>
	<83BCB2B1-44D4-465D-A4A2-8188B8A5B15E@quitch.net>
Message-ID: <op.v0tu9snm5mynk9@fuchsia.local>

Am 26.08.2011, 17:19 Uhr, schrieb Ingo Randolf <ingo at quitch.net>:

> Hello.
> another attempt to make PIL run with python3.2 on osx 10.6.7
> I found an unofficial release of PIL for py3.2:
> https://github.com/sloonz/pil-py3k/tree/a75c372ed17b3d06c0d58c1db03c9215da9c4bbb
> it compiles and installs fine with python3.2

Hi Ingo,

for support on the fork you should contact it's developer. You might need  
to create a debug build of Python to find out exactly what's not working.

Charlie
-- 
Charlie Clark
Managing Director
Clark Consulting & Research
German Office
Helmholtzstr. 20
D?sseldorf
D- 40215
Tel: +49-211-600-3657
Mobile: +49-178-782-6226

From Chris.Barker at noaa.gov  Fri Aug 26 17:37:35 2011
From: Chris.Barker at noaa.gov (Chris.Barker)
Date: Fri, 26 Aug 2011 08:37:35 -0700
Subject: [Image-SIG] PIL for python 3.2
In-Reply-To: <83BCB2B1-44D4-465D-A4A2-8188B8A5B15E@quitch.net>
References: <B85CFCE0-9B29-4F6B-B866-ED90F870AF32@quitch.net>
	<67A211AC-868A-440C-9093-8F8F6703F09A@quitch.net>
	<83BCB2B1-44D4-465D-A4A2-8188B8A5B15E@quitch.net>
Message-ID: <4E57BDBF.7040000@noaa.gov>

On 8/26/11 8:19 AM, Ingo Randolf wrote:
> another attempt to make PIL run with python3.2 on osx 10.6.7
>
> I found an unofficial release of PIL for py3.2:
> https://github.com/sloonz/pil-py3k/tree/a75c372ed17b3d06c0d58c1db03c9215da9c4bbb
>
> it compiles and installs fine with python3.2
>
> when i want to open an image i get:
> IOError: cannot identify image file

IIRC, PIL comes with some test code that you can run that tests the C 
directly, outside of Python --have you tried that? It may give you some 
hints.

Other than that, you are in uncharted waters -- I'd try asking the 
author of that port. Otherwise, it seems unlikely that we will have a 
robust PIL on 3.* until Fredrik gets directly involved :-(

-Chris




> with any type of image...
>
> compiling PIL says:
> --- TKINTER support ok
> --- JPEG support ok
> --- ZLIB (PNG/ZIP) support ok
> --- FREETYPE2 support ok
>
>
> i do:
>>>> from PIL import Image
>>>> im = Image.open("path/to/my/image.jpg")
>
> i am on: osx 10.6.7
>
> what am i doing wrong?
>
>
> please help.
> thanks
> ingo
>
>
> Am 23.08.2011 um 14:29 schrieb Ingo Randolf:
>
>> hi all.
>>
>> i had a look into porting PIL for use with python 3.2
>>
>> well, it does compile now (osx 10.6), i can import PIL in python3.2, but when i try to load an image i get this traceback:
>>
>> Traceback (most recent call last):
>>   File "<stdin>", line 1, in<module>
>>   File "/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/site-packages/PIL/Image.py", line 1983, in open
>>     raise IOError("cannot identify image file")
>> IOError: cannot identify image file
>>
>> this happens with any image-kind...
>>
>> i am new to python, and to PIL... so i have no idea why this happens...
>>
>> it would be great if PIL would be able to be used with python3.2!
>>
>> maybe somebody more skilled than me can make it run?
>>
>> here is the modified version:
>> http://www.bildstrom.at/dl/Imaging-1.1.7_3.2.zip
>>
>> ingo
>>
>>
>>
>> Am 09.08.2011 um 18:18 schrieb Ingo Randolf:
>>
>>> hello.
>>>
>>> i want to use PIL with python 3.2.
>>> Any ideas when PIL will be available for python32?
>>>
>>> thanks
>>> ingo
>>> _______________________________________________
>>> Image-SIG maillist  -  Image-SIG at python.org
>>> http://mail.python.org/mailman/listinfo/image-sig
>>
>> _______________________________________________
>> Image-SIG maillist  -  Image-SIG at python.org
>> http://mail.python.org/mailman/listinfo/image-sig
>
> _______________________________________________
> Image-SIG maillist  -  Image-SIG at python.org
> http://mail.python.org/mailman/listinfo/image-sig


-- 
Christopher Barker, Ph.D.
Oceanographer

Emergency Response Division
NOAA/NOS/OR&R            (206) 526-6959   voice
7600 Sand Point Way NE   (206) 526-6329   fax
Seattle, WA  98115       (206) 526-6317   main reception

Chris.Barker at noaa.gov

From cgohlke at uci.edu  Fri Aug 26 19:03:04 2011
From: cgohlke at uci.edu (Christoph Gohlke)
Date: Fri, 26 Aug 2011 10:03:04 -0700
Subject: [Image-SIG] PIL for python 3.2
In-Reply-To: <83BCB2B1-44D4-465D-A4A2-8188B8A5B15E@quitch.net>
References: <B85CFCE0-9B29-4F6B-B866-ED90F870AF32@quitch.net>
	<67A211AC-868A-440C-9093-8F8F6703F09A@quitch.net>
	<83BCB2B1-44D4-465D-A4A2-8188B8A5B15E@quitch.net>
Message-ID: <4E57D1C8.4000809@uci.edu>

Hi Ingo,

Before attempting to build PIL for Python 3.x make sure you are able to 
correctly build PIL for Python 2.x from the official source 
distribution. All tests should pass.

python setup.py clean --all
python make-manifest.py
python setup.py build_ext -i
python selftest.py
python Tests\run.py

Consider using PIL-1.1.7-py3-source.zip from 
<http://www.lfd.uci.edu/~gohlke/pythonlibs/#pil>. It builds and passes 
all selftests on my Windows and Ubuntu systems.

Christoph



On 8/26/2011 8:19 AM, Ingo Randolf wrote:
> Hello.
>
> another attempt to make PIL run with python3.2 on osx 10.6.7
>
> I found an unofficial release of PIL for py3.2:
> https://github.com/sloonz/pil-py3k/tree/a75c372ed17b3d06c0d58c1db03c9215da9c4bbb
>
> it compiles and installs fine with python3.2
>
> when i want to open an image i get:
> IOError: cannot identify image file
>
> with any type of image...
>
> compiling PIL says:
> --- TKINTER support ok
> --- JPEG support ok
> --- ZLIB (PNG/ZIP) support ok
> --- FREETYPE2 support ok
>
>
> i do:
>>>> from PIL import Image
>>>> im = Image.open("path/to/my/image.jpg")
>
> i am on: osx 10.6.7
>
> what am i doing wrong?
>
>
> please help.
> thanks
> ingo
>
>
> Am 23.08.2011 um 14:29 schrieb Ingo Randolf:
>
>> hi all.
>>
>> i had a look into porting PIL for use with python 3.2
>>
>> well, it does compile now (osx 10.6), i can import PIL in python3.2, but when i try to load an image i get this traceback:
>>
>> Traceback (most recent call last):
>>   File "<stdin>", line 1, in<module>
>>   File "/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/site-packages/PIL/Image.py", line 1983, in open
>>     raise IOError("cannot identify image file")
>> IOError: cannot identify image file
>>
>> this happens with any image-kind...
>>
>> i am new to python, and to PIL... so i have no idea why this happens...
>>
>> it would be great if PIL would be able to be used with python3.2!
>>
>> maybe somebody more skilled than me can make it run?
>>
>> here is the modified version:
>> http://www.bildstrom.at/dl/Imaging-1.1.7_3.2.zip
>>
>> ingo
>>
>>
>>
>> Am 09.08.2011 um 18:18 schrieb Ingo Randolf:
>>
>>> hello.
>>>
>>> i want to use PIL with python 3.2.
>>> Any ideas when PIL will be available for python32?
>>>
>>> thanks
>>> ingo
>>> _______________________________________________
>>> Image-SIG maillist  -  Image-SIG at python.org
>>> http://mail.python.org/mailman/listinfo/image-sig
>>
>> _______________________________________________
>> Image-SIG maillist  -  Image-SIG at python.org
>> http://mail.python.org/mailman/listinfo/image-sig
>
> _______________________________________________
> Image-SIG maillist  -  Image-SIG at python.org
> http://mail.python.org/mailman/listinfo/image-sig
>
>

From aaronichie2000 at gmail.com  Thu Aug 18 14:53:21 2011
From: aaronichie2000 at gmail.com (AARON NICHIE)
Date: Thu, 18 Aug 2011 12:53:21 +0000
Subject: [Image-SIG] help
Message-ID: <CAN47U+wWZZ2Fwxq-qWKn58rNV52Zr+N5g-XKdCNGqPKziyXsNA@mail.gmail.com>

Libraries for PIL are installed but test cannot find it. Any help???

--------------------------------------------------------------------
PIL 1.1.7 TEST SUMMARY
--------------------------------------------------------------------
Python modules loaded from ./PIL
Binary modules loaded from ./PIL
--------------------------------------------------------------------
--- PIL CORE support ok
*** TKINTER support not installed
*** JPEG support not installed
*** ZLIB (PNG/ZIP) support not installed
*** FREETYPE2 support not installed
--- LITTLECMS support ok
--------------------------------------------------------------------
Running selftest:
*****************************************************************
Failure in example:
try:
 _info(Image.open(os.path.join(ROOT, "Images/lena.jpg")))
except IOError, v:
 print v
from line #24 of selftest.testimage
Expected: ('JPEG', 'RGB', (128, 128))
Got: decoder jpeg not available
1 items had failures:
   1 of  57 in selftest.testimage
***Test Failed*** 1 failures.
*** 1 tests of 57 failed.

-- 
Aaron Nichie
University of Ghana
Computer Engineering
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From mit at mitayai.org  Fri Aug 19 06:48:54 2011
From: mit at mitayai.org (Mitayai)
Date: Fri, 19 Aug 2011 00:48:54 -0400
Subject: [Image-SIG] Help inmstalling Python Imaging Library in mac os
	10, 7
In-Reply-To: <op.v0eswmzb5mynk9@fuchsia.local>
References: <7E6D8596-9184-4BF8-9A88-0C5A7BD588A5@marcan.me>
	<op.v0eswmzb5mynk9@fuchsia.local>
Message-ID: <CAFW5bm9+C8V01HgnfJYXOk90QzZt19ffYL9qvKxtGHiTJvJv6A@mail.gmail.com>

one way of getting pil and many other packages on OS 10.7 (Lion) is through
mac ports.

first grab xcode from the app store (free) so that you have a compiler

then

install mac ports from www.macports.org, open a terminal, and type:

sudo port install py-pil


On Thu, Aug 18, 2011 at 8:27 AM, Charlie Clark <
charlie.clark at clark-consulting.eu> wrote:

> Am 17.08.2011, 18:38 Uhr, schrieb Mauricio Martinez <mauricio at marcan.me>:
>
>
>  Hi I want to install the Python Imaging Library in my mac 10,7 but I have
>> 0 skills with code and terminal, could won give me precise instructions on
>> how to install it.
>> Thanks for the amazon job you  are doing.
>>
>
> Dear Mauricio,
>
> assuming you have already installed Python your best bet is to enter:
>
> sudo pip install pillow
>
> In Terminal
>
> Charlie Clark
> --
> Charlie Clark
> Managing Director
> Clark Consulting & Research
> German Office
> Helmholtzstr. 20
> D?sseldorf
> D- 40215
> Tel: +49-211-600-3657
> Mobile: +49-178-782-6226
>
> ______________________________**_________________
> Image-SIG maillist  -  Image-SIG at python.org
> http://mail.python.org/**mailman/listinfo/image-sig<http://mail.python.org/mailman/listinfo/image-sig>
>



-- 
Mit Rowe
Stagename, Inc.
http://www.stagename.com
mit at stagename.com
Office: +1-866-326-3098xt102
Mobile: +1-416-219-2512
Fax: +1-416-533-3480
1 Atlantic Avenue, Suite 107 / Toronto, ON M6K 3E7 / Canada
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From mit at mitayai.org  Fri Aug 19 06:56:55 2011
From: mit at mitayai.org (Mitayai)
Date: Fri, 19 Aug 2011 00:56:55 -0400
Subject: [Image-SIG] Help
In-Reply-To: <CAN47U+wnX3nQP7G9UyPDLN_0gFR6W5yDrvbYihmoLxZ+hgdV-Q@mail.gmail.com>
References: <CAN47U+wnX3nQP7G9UyPDLN_0gFR6W5yDrvbYihmoLxZ+hgdV-Q@mail.gmail.com>
Message-ID: <CAFW5bm9bMux5a4sZ-cGBhrGTYm00=JRi5HwMXLthK7WN=rTNtQ@mail.gmail.com>

Are you installing this through packages?

root at cache1:~# cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=11.04
DISTRIB_CODENAME=natty
DISTRIB_DESCRIPTION="Ubuntu 11.04"

root at cache1:~# apt-get  update

[lots of output]


root at cache1:~# apt-get install python-imaging
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
  libfreetype6 libjpeg62 liblcms1
Suggested packages:
  liblcms-utils python-imaging-doc python-imaging-dbg
The following NEW packages will be installed:
  libfreetype6 libjpeg62 liblcms1 python-imaging
0 upgraded, 4 newly installed, 0 to remove and 0 not upgraded.
Need to get 965 kB of archives.
After this operation, 2,945 kB of additional disk space will be used.
Do you want to continue [Y/n]? y

[lots of output]




On Wed, Aug 17, 2011 at 8:40 AM, AARON NICHIE <aaronichie2000 at gmail.com>wrote:

> Having a little problem adding certain support to mine PIL in Ubuntu 11.04.
> The test gives:
>
> --- PIL CORE support ok
> *** TKINTER support not installed
> *** JPEG support not installed
> *** ZLIB (PNG/ZIP) support not installed
> *** FREETYPE2 support not installed
> --- LITTLECMS support ok
>
> Running selftest:
> *****************************************************************
> Failure in example:
> try:
>  _info(Image.open(os.path.join(ROOT, "Images/lena.jpg")))
> except IOError, v:
>  print v
> from line #24 of selftest.testimage
> Expected: ('JPEG', 'RGB', (128, 128))
> Got: decoder jpeg not available
> 1 items had failures:
>    1 of  57 in selftest.testimage
> ***Test Failed*** 1 failures.
> *** 1 tests of 57 failed.
>
>
> Any help for me???????????/
>
> --
> Aaron Nichie
> University of Ghana
> Computer Engineering
>
> _______________________________________________
> Image-SIG maillist  -  Image-SIG at python.org
> http://mail.python.org/mailman/listinfo/image-sig
>
>


-- 
Mit Rowe
Stagename, Inc.
http://www.stagename.com
mit at stagename.com
Office: +1-866-326-3098xt102
Mobile: +1-416-219-2512
Fax: +1-416-533-3480
1 Atlantic Avenue, Suite 107 / Toronto, ON M6K 3E7 / Canada
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From fitzosity at gmail.com  Wed Aug 24 21:13:41 2011
From: fitzosity at gmail.com (AJ Fitzgerald)
Date: Wed, 24 Aug 2011 14:13:41 -0500
Subject: [Image-SIG] Installing PIL on Mac OS 10.5
Message-ID: <CALRNUCthrYA28h8vr9TgfB8FKddrrMpE7BOELsj6X-SAycLq9Q@mail.gmail.com>

Hi, I'm running Mac OS 10.5.8 with Python 2.7 installed. I've been trying to
easy_install PIL 1.1.7 for use with Django but I'm getting this error:

unable to execute gcc-4.0: No such file or directory
error: command 'gcc-4.0' failed with exit status 1

Any suggestions?

Thanks!
AJ
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From dale at blackbagtech.com  Sat Aug 27 08:17:21 2011
From: dale at blackbagtech.com (Dale Cieslak)
Date: Fri, 26 Aug 2011 23:17:21 -0700
Subject: [Image-SIG] Installing PIL on Mac OS 10.5
In-Reply-To: <CALRNUCthrYA28h8vr9TgfB8FKddrrMpE7BOELsj6X-SAycLq9Q@mail.gmail.com>
References: <CALRNUCthrYA28h8vr9TgfB8FKddrrMpE7BOELsj6X-SAycLq9Q@mail.gmail.com>
Message-ID: <94F0B1CD-7146-4693-A807-348D3DDD59FE@blackbagtech.com>

Hi AJ,

Do you have the Apple Developer tools installed?  That's where gcc comes from.  

~Dale

On Aug 24, 2011, at 12:13 PM, AJ Fitzgerald wrote:

> Hi, I'm running Mac OS 10.5.8 with Python 2.7 installed. I've been trying to easy_install PIL 1.1.7 for use with Django but I'm getting this error:
> 
> unable to execute gcc-4.0: No such file or directory
> error: command 'gcc-4.0' failed with exit status 1
> 
> Any suggestions?
> 
> Thanks!
> AJ
> _______________________________________________
> Image-SIG maillist  -  Image-SIG at python.org
> http://mail.python.org/mailman/listinfo/image-sig

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From ingo at quitch.net  Mon Aug 29 16:46:25 2011
From: ingo at quitch.net (Ingo Randolf)
Date: Mon, 29 Aug 2011 16:46:25 +0200
Subject: [Image-SIG] PIL for python 3.2
In-Reply-To: <4E57D1C8.4000809@uci.edu>
References: <B85CFCE0-9B29-4F6B-B866-ED90F870AF32@quitch.net>
	<67A211AC-868A-440C-9093-8F8F6703F09A@quitch.net>
	<83BCB2B1-44D4-465D-A4A2-8188B8A5B15E@quitch.net>
	<4E57D1C8.4000809@uci.edu>
Message-ID: <FEACE0DB-6EE7-411C-B7C6-424ECE21C3A2@quitch.net>

Hello.

Thanks for all the replies. it is working now!

it turned out, that there was a problem with libjpeg... i found some resources concerning the topic
pil on snow-leopard:

http://stackoverflow.com/questions/1518573/snow-leopard-python-2-6-problems-getting-pil-to-work
http://proteus-tech.com/blog/cwt/install-pil-in-snow-leopard/


----


what i did:

- remove all the libjpeg.* in various folders: /sw/lib /opt/local/lib (attention you might break something if you do that...)
- recompile and install libjpeg (8c) with ./configure --enable-shared --enable-static
- recompile PIL (i finally used this source: http://www.lfd.uci.edu/~gohlke/pythonlibs/#pil) 
	for non-windows version you have to alter the setup.py file though

	at the top you find:
if sys.platform == "win32":

after the if-block i added:

else:
    FREETYPE_ROOT = None
    JPEG_ROOT = libinclude("/usr/local")
    TIFF_ROOT = None
    ZLIB_ROOT = None
    TCL_ROOT = None
    LCMS_ROOT = None


see the JPEG_ROOT!

- after recompiling PIL i checked if _imaging.so is linking to libjepg:

$ otool -L build/lib.bla/_imaging.so
	/usr/local/lib/libjpeg.8.dylib (compatibility version 12.0.0, current version 12.0.0)
	/opt/local/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.5)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.0)

so linking went fine.

- after installing i could finally use PIL with python3.2

:)
great!

thx
ingo



Am 26.08.2011 um 19:03 schrieb Christoph Gohlke:

> Hi Ingo,
> 
> Before attempting to build PIL for Python 3.x make sure you are able to correctly build PIL for Python 2.x from the official source distribution. All tests should pass.
> 
> python setup.py clean --all
> python make-manifest.py
> python setup.py build_ext -i
> python selftest.py
> python Tests\run.py
> 
> Consider using PIL-1.1.7-py3-source.zip from <http://www.lfd.uci.edu/~gohlke/pythonlibs/#pil>. It builds and passes all selftests on my Windows and Ubuntu systems.
> 
> Christoph
> 
> 
> 
> On 8/26/2011 8:19 AM, Ingo Randolf wrote:
>> Hello.
>> 
>> another attempt to make PIL run with python3.2 on osx 10.6.7
>> 
>> I found an unofficial release of PIL for py3.2:
>> https://github.com/sloonz/pil-py3k/tree/a75c372ed17b3d06c0d58c1db03c9215da9c4bbb
>> 
>> it compiles and installs fine with python3.2
>> 
>> when i want to open an image i get:
>> IOError: cannot identify image file
>> 
>> with any type of image...
>> 
>> compiling PIL says:
>> --- TKINTER support ok
>> --- JPEG support ok
>> --- ZLIB (PNG/ZIP) support ok
>> --- FREETYPE2 support ok
>> 
>> 
>> i do:
>>>>> from PIL import Image
>>>>> im = Image.open("path/to/my/image.jpg")
>> 
>> i am on: osx 10.6.7
>> 
>> what am i doing wrong?
>> 
>> 
>> please help.
>> thanks
>> ingo
>> 
>> 
>> Am 23.08.2011 um 14:29 schrieb Ingo Randolf:
>> 
>>> hi all.
>>> 
>>> i had a look into porting PIL for use with python 3.2
>>> 
>>> well, it does compile now (osx 10.6), i can import PIL in python3.2, but when i try to load an image i get this traceback:
>>> 
>>> Traceback (most recent call last):
>>>  File "<stdin>", line 1, in<module>
>>>  File "/Library/Frameworks/Python.framework/Versions/3.2/lib/python3.2/site-packages/PIL/Image.py", line 1983, in open
>>>    raise IOError("cannot identify image file")
>>> IOError: cannot identify image file
>>> 
>>> this happens with any image-kind...
>>> 
>>> i am new to python, and to PIL... so i have no idea why this happens...
>>> 
>>> it would be great if PIL would be able to be used with python3.2!
>>> 
>>> maybe somebody more skilled than me can make it run?
>>> 
>>> here is the modified version:
>>> http://www.bildstrom.at/dl/Imaging-1.1.7_3.2.zip
>>> 
>>> ingo
>>> 
>>> 
>>> 
>>> Am 09.08.2011 um 18:18 schrieb Ingo Randolf:
>>> 
>>>> hello.
>>>> 
>>>> i want to use PIL with python 3.2.
>>>> Any ideas when PIL will be available for python32?
>>>> 
>>>> thanks
>>>> ingo
>>>> _______________________________________________
>>>> Image-SIG maillist  -  Image-SIG at python.org
>>>> http://mail.python.org/mailman/listinfo/image-sig
>>> 
>>> _______________________________________________
>>> Image-SIG maillist  -  Image-SIG at python.org
>>> http://mail.python.org/mailman/listinfo/image-sig
>> 
>> _______________________________________________
>> Image-SIG maillist  -  Image-SIG at python.org
>> http://mail.python.org/mailman/listinfo/image-sig
>> 
>> 
> _______________________________________________
> Image-SIG maillist  -  Image-SIG at python.org
> http://mail.python.org/mailman/listinfo/image-sig


From rowen at uw.edu  Tue Aug 30 22:32:51 2011
From: rowen at uw.edu (Russell E. Owen)
Date: Tue, 30 Aug 2011 13:32:51 -0700
Subject: [Image-SIG] Installing PIL on Mac OS 10.5
References: <CALRNUCthrYA28h8vr9TgfB8FKddrrMpE7BOELsj6X-SAycLq9Q@mail.gmail.com>
Message-ID: <rowen-CF45D4.13325130082011@news.gmane.org>

In article 
<CALRNUCthrYA28h8vr9TgfB8FKddrrMpE7BOELsj6X-SAycLq9Q at mail.gmail.com>,
 AJ Fitzgerald <fitzosity at gmail.com> wrote:

> Hi, I'm running Mac OS 10.5.8 with Python 2.7 installed. I've been trying to
> easy_install PIL 1.1.7 for use with Django but I'm getting this error:
> 
> unable to execute gcc-4.0: No such file or directory
> error: command 'gcc-4.0' failed with exit status 1
> 
> Any suggestions?

If you are using Python from python.org  then use my unofficial binary 
installer (I wish it was official, but the Frederik is apparently 
unwilling to serve it).

<http://www.astro.washington.edu/users/rowen/python/>

If you want to build from source then you'll need to install XCode and 
the prerequisite libraries. My notes on that are:
Install libjpeg or point the build system to the version in /usr/X11
Install freetype or point the build system to the version in /usr/X11
Install littleCMS (I installed version 1.19 because I could not build 
2-2.0a)


-- Russell


From claudyus84 at gmail.com  Wed Aug 31 14:03:39 2011
From: claudyus84 at gmail.com (Claudio)
Date: Wed, 31 Aug 2011 14:03:39 +0200
Subject: [Image-SIG] Implement sobel filter
Message-ID: <CADDB2t5D+pjp0+K4dWFS9b_=_T=7zpyiuNq4fHFuftnzRCSotw@mail.gmail.com>

Hi all,
I'm tring to implement a sobel filter using PIL library with few success.

Now I never used this library before so any help is appreciate.
I wrote the following code that essential is a standard implementation
of the sobel filter:

input img, output dimg:
dx = [-1,  0,  1, -2, 0, 2, -1, 0, 1]
dy = [-1, -2, -1,  0, 0, 0,  1, 2, 1]

ximg = img.filter(ImageFilter.Kernel((3,3), dx, None, 0)) #apply the
kernel in x e y
yimg = img.filter(ImageFilter.Kernel((3,3), dy, None, 0))

dimg = img.copy()
dest = dimg.load()
xdata = ximg.load() #retrieve the x e y data
ydata = yimg.load()

for y in range ( img.size[1]):			# calcolo il gradiente per ogni punto
	for x in range( img.size[0]):
#	     dest[x, y] = sqrt( xdata[x, y] * xdata[x, y] + ydata[x, y] * ydata[x, y])
	     dest[x, y] = abs( xdata[x, y] ) + abs (ydata[x, y])

The result is not what I expected, so I misunderstood some function usage?

From ggpolo at gmail.com  Wed Aug 31 15:50:01 2011
From: ggpolo at gmail.com (Guilherme Polo)
Date: Wed, 31 Aug 2011 10:50:01 -0300
Subject: [Image-SIG] Implement sobel filter
In-Reply-To: <CADDB2t5D+pjp0+K4dWFS9b_=_T=7zpyiuNq4fHFuftnzRCSotw@mail.gmail.com>
References: <CADDB2t5D+pjp0+K4dWFS9b_=_T=7zpyiuNq4fHFuftnzRCSotw@mail.gmail.com>
Message-ID: <CADrNvOcovF976XUZh6Uwwfrj-FFsvCzED7rBYPn7=6qf6rx+BA@mail.gmail.com>

2011/8/31 Claudio <claudyus84 at gmail.com>:
> Hi all,
> I'm tring to implement a sobel filter using PIL library with few success.
>
> Now I never used this library before so any help is appreciate.
> I wrote the following code that essential is a standard implementation
> of the sobel filter:
>
> input img, output dimg:
> dx = [-1, ?0, ?1, -2, 0, 2, -1, 0, 1]
> dy = [-1, -2, -1, ?0, 0, 0, ?1, 2, 1]
>
> ximg = img.filter(ImageFilter.Kernel((3,3), dx, None, 0)) #apply the
> kernel in x e y
> yimg = img.filter(ImageFilter.Kernel((3,3), dy, None, 0))
>
> dimg = img.copy()
> dest = dimg.load()
> xdata = ximg.load() #retrieve the x e y data
> ydata = yimg.load()
>
> for y in range ( img.size[1]): ? ? ? ? ? ? ? ? ?# calcolo il gradiente per ogni punto
> ? ? ? ?for x in range( img.size[0]):
> # ? ? ? ? ? ?dest[x, y] = sqrt( xdata[x, y] * xdata[x, y] + ydata[x, y] * ydata[x, y])
> ? ? ? ? ? ? dest[x, y] = abs( xdata[x, y] ) + abs (ydata[x, y])
>
> The result is not what I expected, so I misunderstood some function usage?

"not what I expected" is too vague. Maybe you have a 8 bits image and
the convolution only uses 8 bits to store the results and then you get
weird results ?


-- 
-- Guilherme H. Polo Goncalves

From ingo at quitch.net  Wed Aug 31 16:21:46 2011
From: ingo at quitch.net (Ingo Randolf)
Date: Wed, 31 Aug 2011 16:21:46 +0200
Subject: [Image-SIG] float rgba list -> Image
Message-ID: <7E664690-E32D-4D3A-9FAB-E9DD3B6B9A00@quitch.net>

Hi all.

I have a list with float-values describing an image like this:
[R, G, B, A, R, G, B, A, R, G, B, A, R, G, B, A, R, G, B, A, ... etc.]

the RGBA-values are from 0. - 1.

is there a clever way to make a PIL-Image out of something like this?


i played around with putdata... and came along with this, very, very slow solution:

px = list-of-rgba-values-as-floats
img = the-image

#make int-tuples
newdata = [(int(px[(x*4)]*255), int(px[(x*4)+1]*255), int(px[(x*4)+2]*255), int(px[(x*4)+3]*255)) for x in range( img.size[0] * img.size[1] )]
Image.putdata(newdata)


well i never saw a result, because it took too long for my short patience... ;)


i also tried to set the values pixel-wise... this is also very, very slow...


how to do that in a more clever way?

thanks for any hints
inx




From charlesc-pyimagesig at pyropus.ca  Wed Aug 31 16:43:17 2011
From: charlesc-pyimagesig at pyropus.ca (Charles Cazabon)
Date: Wed, 31 Aug 2011 08:43:17 -0600
Subject: [Image-SIG] float rgba list -> Image
In-Reply-To: <7E664690-E32D-4D3A-9FAB-E9DD3B6B9A00@quitch.net>
References: <7E664690-E32D-4D3A-9FAB-E9DD3B6B9A00@quitch.net>
Message-ID: <20110831144317.GA30669@pyropus.ca>

Ingo Randolf <ingo at quitch.net> wrote:
> 
> I have a list with float-values describing an image like this:
> [R, G, B, A, R, G, B, A, R, G, B, A, R, G, B, A, R, G, B, A, ... etc.]
> 
> the RGBA-values are from 0. - 1.
> 
> is there a clever way to make a PIL-Image out of something like this?

PIL.Image.fromstring() is probably your best bet.

Charles
-- 
------------------------------------------------------------------
Charles Cazabon                   <charlesc-pyimagesig at pyropus.ca>
Software, consulting, and services available at http://pyropus.ca/
------------------------------------------------------------------

From charlie.clark at clark-consulting.eu  Wed Aug 31 17:06:37 2011
From: charlie.clark at clark-consulting.eu (Charlie Clark)
Date: Wed, 31 Aug 2011 17:06:37 +0200
Subject: [Image-SIG] float rgba list -> Image
In-Reply-To: <7E664690-E32D-4D3A-9FAB-E9DD3B6B9A00@quitch.net>
References: <7E664690-E32D-4D3A-9FAB-E9DD3B6B9A00@quitch.net>
Message-ID: <op.v022xbi35mynk9@fuchsia.local>

Am 31.08.2011, 16:21 Uhr, schrieb Ingo Randolf <ingo at quitch.net>:

> Hi all.
> I have a list with float-values describing an image like this:
> [R, G, B, A, R, G, B, A, R, G, B, A, R, G, B, A, R, G, B, A, ... etc.]
> the RGBA-values are from 0. - 1.
> is there a clever way to make a PIL-Image out of something like this?
> i played around with putdata... and came along with this, very, very  
> slow solution:
> px = list-of-rgba-values-as-floats
> img = the-image
> #make int-tuples
> newdata = [(int(px[(x*4)]*255), int(px[(x*4)+1]*255),  
> int(px[(x*4)+2]*255), int(px[(x*4)+3]*255)) for x in range( img.size[0]  
> * img.size[1] )]
> Image.putdata(newdata)
> well i never saw a result, because it took too long for my short  
> patience...

You can turn that list into a list of tuples for each pixel like this

new_array = []
for idx in range(0, len(l), 4)
	new_array.append(tuple(l[idx:idx+4]))

You can probably wrap this in some functional programming so that you are  
not using memory for transitional data structures.

Charlie
-- 
Charlie Clark
Managing Director
Clark Consulting & Research
German Office
Helmholtzstr. 20
D?sseldorf
D- 40215
Tel: +49-211-600-3657
Mobile: +49-178-782-6226

From ggpolo at gmail.com  Wed Aug 31 17:06:07 2011
From: ggpolo at gmail.com (Guilherme Polo)
Date: Wed, 31 Aug 2011 12:06:07 -0300
Subject: [Image-SIG] Implement sobel filter
In-Reply-To: <CADDB2t5-FYrxxs29pYgms5PSeSrcfg5KXtCUx6m01c_46Mjm_g@mail.gmail.com>
References: <CADDB2t5D+pjp0+K4dWFS9b_=_T=7zpyiuNq4fHFuftnzRCSotw@mail.gmail.com>
	<CADrNvOcovF976XUZh6Uwwfrj-FFsvCzED7rBYPn7=6qf6rx+BA@mail.gmail.com>
	<CADDB2t5-FYrxxs29pYgms5PSeSrcfg5KXtCUx6m01c_46Mjm_g@mail.gmail.com>
Message-ID: <CADrNvOe557CTDrXUU3WcBvgnMsdmP6SeO=0cETmG3CMLNENbLg@mail.gmail.com>

2011/8/31 Claudio <claudyus84 at gmail.com>:
> 2011/8/31 Guilherme Polo <ggpolo at gmail.com>:
>> 2011/8/31 Claudio <claudyus84 at gmail.com>:
>>> Hi all,
>>> I'm tring to implement a sobel filter using PIL library with few success.
>>>
>>> Now I never used this library before so any help is appreciate.
>>> I wrote the following code that essential is a standard implementation
>>> of the sobel filter:
>>>
>>> input img, output dimg:
>>> dx = [-1, ?0, ?1, -2, 0, 2, -1, 0, 1]
>>> dy = [-1, -2, -1, ?0, 0, 0, ?1, 2, 1]
>>>
>>> ximg = img.filter(ImageFilter.Kernel((3,3), dx, None, 0)) #apply the
>>> kernel in x e y
>>> yimg = img.filter(ImageFilter.Kernel((3,3), dy, None, 0))
>>>
>>> dimg = img.copy()
>>> dest = dimg.load()
>>> xdata = ximg.load() #retrieve the x e y data
>>> ydata = yimg.load()
>>>
>>> for y in range ( img.size[1]): ? ? ? ? ? ? ? ? ?# calcolo il gradiente per ogni punto
>>> ? ? ? ?for x in range( img.size[0]):
>>> # ? ? ? ? ? ?dest[x, y] = sqrt( xdata[x, y] * xdata[x, y] + ydata[x, y] * ydata[x, y])
>>> ? ? ? ? ? ? dest[x, y] = abs( xdata[x, y] ) + abs (ydata[x, y])
>>>
>>> The result is not what I expected, so I misunderstood some function usage?
>>
>> "not what I expected" is too vague. Maybe you have a 8 bits image and
>
> Ok that's true, I was too vague.
> So using the same photo of the stream engine that is on wikipedia [1]
> I obtain this image:
> ?https://www.mignanti.eu/articoli/tmp
>
>> the convolution only uses 8 bits to store the results and then you get
>> weird results ?
>
> Well, I'm working on grayscale image but the results should be in the
> same domain.
>

Do you want something like http://i.imgur.com/Ij6s6.png (res1) or
http://imgur.com/kTBLK (res2) ?


# orig is your RGB image, I don't know how you wish to handle the bands
img = ImageOps.grayscale(orig)

dxn = scipy.signal.convolve2d(numpy.array(img), [[-1, 0, 1], [-2, 0,
2], [-1, 0, 1]])
dyn = scipy.signal.convolve2d(numpy.array(img), [[-1, -2, -1], [0, 0,
0], [1, 2, 1]])
resn = dxn + dyn
a = 255. / (resn.max() - resn.min())
b = -a * resn.min()

# cap is a function that returns 0 if a point is below 0 and
# returns 255 if a point is above 255
res1 = Image.fromarray(numpy.uint8((resn * a + b).round()))
res2 = Image.fromarray(numpy.uint8((cap(resn)).round()))


Now I see that I'm very naive with PIL, I don't know how to achieve
exactly the same result using only PIL.


-- 
-- Guilherme H. Polo Goncalves

From cgohlke at uci.edu  Wed Aug 31 18:27:34 2011
From: cgohlke at uci.edu (Christoph Gohlke)
Date: Wed, 31 Aug 2011 09:27:34 -0700
Subject: [Image-SIG] float rgba list -> Image
In-Reply-To: <7E664690-E32D-4D3A-9FAB-E9DD3B6B9A00@quitch.net>
References: <7E664690-E32D-4D3A-9FAB-E9DD3B6B9A00@quitch.net>
Message-ID: <4E5E60F6.3020902@uci.edu>



On 8/31/2011 7:21 AM, Ingo Randolf wrote:
> Hi all.
>
> I have a list with float-values describing an image like this:
> [R, G, B, A, R, G, B, A, R, G, B, A, R, G, B, A, R, G, B, A, ... etc.]
>
> the RGBA-values are from 0. - 1.
>
> is there a clever way to make a PIL-Image out of something like this?
>
>
> i played around with putdata... and came along with this, very, very slow solution:
>
> px = list-of-rgba-values-as-floats
> img = the-image
>
> #make int-tuples
> newdata = [(int(px[(x*4)]*255), int(px[(x*4)+1]*255), int(px[(x*4)+2]*255), int(px[(x*4)+3]*255)) for x in range( img.size[0] * img.size[1] )]
> Image.putdata(newdata)
>
>
> well i never saw a result, because it took too long for my short patience... ;)
>
>
> i also tried to set the values pixel-wise... this is also very, very slow...
>
>
> how to do that in a more clever way?
>
> thanks for any hints
> inx
>
>

Consider using numpy <http://numpy.scipy.org/> and Image.fromarray. For 
example:


import numpy
from PIL import Image

shape = 256, 256, 4
px = list(numpy.random.rand(shape[0]*shape[1]*shape[2]))

newdata = numpy.array(px, dtype=numpy.float32)
newdata *= 255.99998474
newdata = newdata.astype(numpy.uint8)
newdata.shape = shape

image = Image.fromarray(newdata)


Christoph

From Chris.Barker at noaa.gov  Wed Aug 31 20:51:24 2011
From: Chris.Barker at noaa.gov (Chris.Barker)
Date: Wed, 31 Aug 2011 11:51:24 -0700
Subject: [Image-SIG] float rgba list -> Image
In-Reply-To: <4E5E60F6.3020902@uci.edu>
References: <7E664690-E32D-4D3A-9FAB-E9DD3B6B9A00@quitch.net>
	<4E5E60F6.3020902@uci.edu>
Message-ID: <4E5E82AC.1070905@noaa.gov>

On 8/31/11 9:27 AM, Christoph Gohlke wrote:
> On 8/31/2011 7:21 AM, Ingo Randolf wrote:
>> I have a list with float-values describing an image like this:
>> [R, G, B, A, R, G, B, A, R, G, B, A, R, G, B, A, R, G, B, A, ... etc.]

I can't help but wonder why it's in that data structure to begin with -- 
as you've seen, it's a pretty painfully inefficient way to do it.

>> i played around with putdata...

you need it in a binary format that is compatible:

> Consider using numpy <http://numpy.scipy.org/> and Image.fromarray.

this is probably the best way, but you can also use an array.array 
object -- create an array.array of type byte from your list, then pass 
that in to putdata. (details left as an exercise for the reader)

I think working with numbers in Python without numpy would be like 
working with text using lists of characters, rather than the string object.

-Chris




  For
> example:
>
>
> import numpy
> from PIL import Image
>
> shape = 256, 256, 4
> px = list(numpy.random.rand(shape[0]*shape[1]*shape[2]))
>
> newdata = numpy.array(px, dtype=numpy.float32)
> newdata *= 255.99998474
> newdata = newdata.astype(numpy.uint8)
> newdata.shape = shape
>
> image = Image.fromarray(newdata)
>
>
> Christoph
> _______________________________________________
> Image-SIG maillist - Image-SIG at python.org
> http://mail.python.org/mailman/listinfo/image-sig


-- 
Christopher Barker, Ph.D.
Oceanographer

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