From lists at theflorys.org  Thu Sep  2 02:07:04 2010
From: lists at theflorys.org (David)
Date: Wed, 01 Sep 2010 20:07:04 -0400
Subject: [Image-SIG] IOError "decoder jpeg not available" on Win7
Message-ID: <4C7EEAA8.2040000@theflorys.org>

I am running Python 2.6 on a new Win7 machine.  Installed PIL from the 
PIL-1.1.7.win32-py2.6.exe binary.  I am trying to resize a jpg.  I get 
the IOError message "decoder jpeg not available" when I call the save() 
method:

im = Image.open(infile)
im = im.resize(newsize,Image.ANTIALIAS)
im.save(outfile, "JPEG", quality=90)

I have scanned a year of back messages on this list without seeing any 
relevant advice.  I have used PIL with the same code on other Win32 
machines without problems.

Help or advice would be appreciated.

David Flory

From spe.stani.be at gmail.com  Thu Sep  2 11:51:07 2010
From: spe.stani.be at gmail.com (Stani)
Date: Thu, 2 Sep 2010 11:51:07 +0200
Subject: [Image-SIG] Paste with alpha not working correctly
In-Reply-To: <4C7AB320.4030602@online.de>
References: <4C795049.6090204@online.de>
	<AANLkTikied4o5-vffHYwTXVH1F29Rof=FjozXioKFRj8@mail.gmail.com>
	<4C7A9BE8.7020404@online.de>
	<AANLkTimzP-OR=YcHQ1D3NLYcTr+vgNpwQ1zVpx4C6+bD@mail.gmail.com>
	<4C7AB320.4030602@online.de>
Message-ID: <AANLkTik9qgN2GZZ9iNKTkKoqMSYpHzCu2Q0uppHM7Tj0@mail.gmail.com>

On Sun, Aug 29, 2010 at 9:21 PM, Helge <image-sig at online.de> wrote:
> Hello Jerome,
>
> Jerome Leclanche schrieb:
>>
>> I believe I've run into that issue before when creating composited
>> images. I fixed it with the following hack in libImaging/Paste.c:135 @
>> paste_mask_RGBA
>> Replaced the for loop with the following:
>
> Glad to read that there is a solution.
> Sadly I have no possibility to compile the C part. Is there a workaround in
> python only? (Slowness is no problem.)
You might try this paste function which I developed for Phatch:
http://bazaar.launchpad.net/~stani/phatch/trunk/annotate/head%3A/phatch/lib/imtools.py#L679

Best regards,
Stani

-- 
Phatch Photo Batch Processor - http://photobatch.stani.be
SPE Python IDE - http://pythonide.stani.be

From image-sig at online.de  Sun Sep  5 18:04:03 2010
From: image-sig at online.de (Helge)
Date: Sun, 05 Sep 2010 18:04:03 +0200
Subject: [Image-SIG] Paste with alpha not working correctly
In-Reply-To: <AANLkTik9qgN2GZZ9iNKTkKoqMSYpHzCu2Q0uppHM7Tj0@mail.gmail.com>
References: <4C795049.6090204@online.de>	<AANLkTikied4o5-vffHYwTXVH1F29Rof=FjozXioKFRj8@mail.gmail.com>	<4C7A9BE8.7020404@online.de>	<AANLkTimzP-OR=YcHQ1D3NLYcTr+vgNpwQ1zVpx4C6+bD@mail.gmail.com>	<4C7AB320.4030602@online.de>
	<AANLkTik9qgN2GZZ9iNKTkKoqMSYpHzCu2Q0uppHM7Tj0@mail.gmail.com>
Message-ID: <4C83BF73.8080505@online.de>

Hello Stani,

Stani schrieb:
> You might try this paste function which I developed for Phatch:
> http://bazaar.launchpad.net/~stani/phatch/trunk/annotate/head%3A/phatch/lib/imtools.py#L679

Thank you, this works as I expected from the original paste function.
I've updated the example with the method of your code:
<https://content.wuala.com/contents/nanyouco/Images/PIL/index.html?key=JWSJEVSOHCCJ>

... And I keep your Phatch tool in mind if I want to batch process my 
images :-)

Best Regards,
   Helge

From lists at theflorys.org  Wed Sep  8 22:08:47 2010
From: lists at theflorys.org (David)
Date: Wed, 08 Sep 2010 16:08:47 -0400
Subject: [Image-SIG] IOError "decoder jpeg not available" on Win7 (2nd try)
Message-ID: <4C87ED4F.1060704@theflorys.org>

I sent this to the list a week ago with no result.  2nd try.

I am running Python 2.6 on a new Win7 machine. I have installed PIL from 
the PIL-1.1.7.win32-py2.6.exe binary.  I am trying to resize a jpg.  I 
get the IOError message "decoder jpeg not available" when I call the 
save() method:

im = Image.open(infile)
im = im.resize(newsize,Image.ANTIALIAS)
im.save(outfile, "JPEG", quality=90)

I have scanned a year of back messages on this list without seeing any 
relevant advice.  I have used PIL with the same code on other Win32 
machines without problems.  Since it is a prebuild binary, the jpeg 
decoder should be present.

Help or advice would be appreciated.

David Flory

From cannon.el at gmail.com  Thu Sep  9 00:04:45 2010
From: cannon.el at gmail.com (Edward Cannon)
Date: Wed, 8 Sep 2010 15:04:45 -0700
Subject: [Image-SIG] IOError "decoder jpeg not available" on Win7 (2nd
	try)
In-Reply-To: <4C87ED4F.1060704@theflorys.org>
References: <4C87ED4F.1060704@theflorys.org>
Message-ID: <D4363AE7-89FB-42E2-8680-2B6FAB429A10@gmail.com>

That seems weird.  I have win7 and python 2.6 and do not have any  
problems. Maybe a clean install will help.
Edward Cannon
Unicorn School



On Sep 8, 2010, at 1:08 PM, David <lists at theflorys.org> wrote:

> I sent this to the list a week ago with no result.  2nd try.
>
> I am running Python 2.6 on a new Win7 machine. I have installed PIL  
> from the PIL-1.1.7.win32-py2.6.exe binary.  I am trying to resize a  
> jpg.  I get the IOError message "decoder jpeg not available" when I  
> call the save() method:
>
> im = Image.open(infile)
> im = im.resize(newsize,Image.ANTIALIAS)
> im.save(outfile, "JPEG", quality=90)
>
> I have scanned a year of back messages on this list without seeing  
> any relevant advice.  I have used PIL with the same code on other  
> Win32 machines without problems.  Since it is a prebuild binary, the  
> jpeg decoder should be present.
>
> Help or advice would be appreciated.
>
> David Flory
> _______________________________________________
> Image-SIG maillist  -  Image-SIG at python.org
> http://mail.python.org/mailman/listinfo/image-sig

From joao.lopes at textendo.com  Mon Sep  6 14:00:23 2010
From: joao.lopes at textendo.com (Joao Lopes)
Date: Mon, 6 Sep 2010 14:00:23 +0200
Subject: [Image-SIG] Bug report: Open image from a StringIO
Message-ID: <AANLkTikcPzsOAn3zCRVpCEm9O0oR-Sn+pjr3Hc6GEtXC@mail.gmail.com>

When opening a image from a StringIO the StringIO position pointer is
not reseted. There should be a call to seek(0,0) before starting
loading the image from the StringIO.

I can provide a patch if needed.

Thanks
JC Lopes

From t.wood07 at imperial.ac.uk  Wed Sep  8 17:01:03 2010
From: t.wood07 at imperial.ac.uk (Wood, Tobias)
Date: Wed, 8 Sep 2010 16:01:03 +0100
Subject: [Image-SIG] PNG sBITs
Message-ID: <BBC9888D9713FC4BA183E43B14C498AD139C046D@ICEXM1.ic.ac.uk>

Hello,
Does PIL currently support the sBIT chunk for PNGs? I am having exactly the same issues as described in this post from 3 years ago - http://old.nabble.com/Does-PIL-support-the-sBIT-chunk-in-PNG-files--td14109569.html#a14109569 - and couldn't find a response. I've had a cursory look through PngImagePlugin.py and couldn't find a mention either. If PIL doesn't support it, is there at least a way to query whether it is set via PIL? I haven't found a way in any of the Image class methods yet.
Thanks for any help,
Toby Wood

From seb.haase at gmail.com  Thu Sep  9 10:05:58 2010
From: seb.haase at gmail.com (Sebastian Haase)
Date: Thu, 9 Sep 2010 10:05:58 +0200
Subject: [Image-SIG] Bug report: Open image from a StringIO
In-Reply-To: <AANLkTikcPzsOAn3zCRVpCEm9O0oR-Sn+pjr3Hc6GEtXC@mail.gmail.com>
References: <AANLkTikcPzsOAn3zCRVpCEm9O0oR-Sn+pjr3Hc6GEtXC@mail.gmail.com>
Message-ID: <AANLkTikQdcjAnGUw_-dfUoSVhJjk9nbRA+hJ=KxcXgt_@mail.gmail.com>

On Mon, Sep 6, 2010 at 2:00 PM, Joao Lopes <joao.lopes at textendo.com> wrote:
> When opening a image from a StringIO the StringIO position pointer is
> not reseted. There should be a call to seek(0,0) before starting
> loading the image from the StringIO.
>
> I can provide a patch if needed.
>
> Thanks
> JC Lopes

I don't think this is really a good idea - I would not expect a
seek(0) when reading from an open file object either.

- Sebastian Haase

PS:
Why is the default reply here on IMAGE-SIG   NOT to the list ... that
might be a reason why there are so many  questions without (public)
answers .... ????

From Chris.Barker at noaa.gov  Thu Sep  9 19:08:24 2010
From: Chris.Barker at noaa.gov (Christopher Barker)
Date: Thu, 09 Sep 2010 10:08:24 -0700
Subject: [Image-SIG] Bug report: Open image from a StringIO
In-Reply-To: <AANLkTikQdcjAnGUw_-dfUoSVhJjk9nbRA+hJ=KxcXgt_@mail.gmail.com>
References: <AANLkTikcPzsOAn3zCRVpCEm9O0oR-Sn+pjr3Hc6GEtXC@mail.gmail.com>
	<AANLkTikQdcjAnGUw_-dfUoSVhJjk9nbRA+hJ=KxcXgt_@mail.gmail.com>
Message-ID: <4C891488.8020508@noaa.gov>

On 9/9/10 1:05 AM, Sebastian Haase wrote:

> Why is the default reply here on IMAGE-SIG   NOT to the list ... that
> might be a reason why there are so many  questions without (public)
> answers .... ????

Because there are a lot of folks that think lists should be set up that 
way -- it's a trade off between the likelihood of accidentally sending a 
private note to the list vs. accidentally sending a list note to an 
individual.

Personally, I far prefer lists that default to replying to the list, but 
I'm apparently in a minority.

-Chris

-- 
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 seb.haase at gmail.com  Fri Sep 10 09:30:33 2010
From: seb.haase at gmail.com (Sebastian Haase)
Date: Fri, 10 Sep 2010 09:30:33 +0200
Subject: [Image-SIG] Bug report: Open image from a StringIO
In-Reply-To: <4C891488.8020508@noaa.gov>
References: <AANLkTikcPzsOAn3zCRVpCEm9O0oR-Sn+pjr3Hc6GEtXC@mail.gmail.com>
	<AANLkTikQdcjAnGUw_-dfUoSVhJjk9nbRA+hJ=KxcXgt_@mail.gmail.com>
	<4C891488.8020508@noaa.gov>
Message-ID: <AANLkTim6QAHvVVEjKzR9O0uN1Sp1w-jPUnx78cXZBzYR@mail.gmail.com>

On Thu, Sep 9, 2010 at 7:08 PM, Christopher Barker
<Chris.Barker at noaa.gov> wrote:
> On 9/9/10 1:05 AM, Sebastian Haase wrote:
>
>> Why is the default reply here on IMAGE-SIG ? NOT to the list ... that
>> might be a reason why there are so many ?questions without (public)
>> answers .... ????
>
> Because there are a lot of folks that think lists should be set up that way
> -- it's a trade off between the likelihood of accidentally sending a private
> note to the list vs. accidentally sending a list note to an individual.
>
> Personally, I far prefer lists that default to replying to the list, but I'm
> apparently in a minority.
>
 Hi Chris.

thanks for your reply. I remember having had the same discussion on
another list (moinmoin wiki).
Just to say again, that you are not alone:
Why wouldn't everyone agree, that things that start on a list, would /
should by default also stay on the list.
>From my experience, this list (and the moinmoin list for that matter)
are just not much to follow, maybe one reason simply being this
"stupid" default-reply setting....

Cheers,
Sebastian

From yury at shurup.com  Fri Sep 10 09:23:35 2010
From: yury at shurup.com (Yury V. Zaytsev)
Date: Fri, 10 Sep 2010 09:23:35 +0200
Subject: [Image-SIG] Bug report: Open image from a StringIO
In-Reply-To: <4C891488.8020508@noaa.gov>
References: <AANLkTikcPzsOAn3zCRVpCEm9O0oR-Sn+pjr3Hc6GEtXC@mail.gmail.com>
	<AANLkTikQdcjAnGUw_-dfUoSVhJjk9nbRA+hJ=KxcXgt_@mail.gmail.com>
	<4C891488.8020508@noaa.gov>
Message-ID: <1284103415.6927.5.camel@mypride>

On Thu, 2010-09-09 at 10:08 -0700, Christopher Barker wrote:

> Personally, I far prefer lists that default to replying to the list, but 
> I'm apparently in a minority.

Not quite. I had to teach myself to use Reply To All exactly for the
same reason ;-(
 
-- 
Sincerely yours,
Yury V. Zaytsev


From mydomdom at gmail.com  Mon Sep 13 19:39:57 2010
From: mydomdom at gmail.com (Dom Dom)
Date: Mon, 13 Sep 2010 19:39:57 +0200
Subject: [Image-SIG] Can't split data stream for an ip camera
Message-ID: <AANLkTikCoeKpSYboFk_DuGGMs_gX3wo-0Jou32mgUT0Z@mail.gmail.com>

Hello,

I want to display with wxPython the images sent by an ip camera.

Getting the photos is not a problem:
page = urllib2.build_opener().open("http://192.168.1.3/Jpeg/CamImg.jpg


")
image = Image.open(cStringIO.StringIO(page.read()))
Then I display the images one by one with wx with a loop (4 to 8 Frames Per
Second, which is not quick enough). But it works well.

What I'd like to do is to display the frames in a continous mode, ie
'movie'.
The problem is that I can't manage to analyze the stream sent by the camera
whose address is: 'http://192.168.1.3/GetData.cgi


'

I tried to adapt the script mentioned here
(http://thread.gmane.org/gmane.comp.python.general/449768


) without success. See below.

My problem is that I don't know where to begin and where to stop the
extraction
of data (the stream of data is continous):
See the class below:
   boundary = self.buffer.find(r"""--IPCamBoundary""")
   begin = boundary + 43
   end = self.buffer.rfind(r"""--IPCamBoundary""")

I'd appreciate that some help to understand what I should do.

Many thanks in advance for four help
Dominique



--------------------------------------------------------------------------
Below is some info that may be needed with a view to helping me:
>>> stream = urllib2.urlopen('http://192.168.1.3/GetData.cgi


')
>>> print stream.info


()
Date: Sat, 01 Feb 2003 05:30:42 GMT

Server: WYM/1.0

Connection: close

Content-Type: multipart/x-mixed-replace;boundary=IPCamBoundary

Last-Modified: Sat, 01 Feb 2003 05:30:42 GMT

Pragma: no-cache

Cache-Control: no-cache

Expires: 01 Jan 1970 00:00:00 GMT


>>> stream.readline()
'--IPCamBoundary\r\n'
>>> stream.readline()
'Content-Type: image/jpeg\r\n'
>>> stream.readline()
'\r\n'
>>> stream.readline()
'\xff\xd8\xff\xe2\x00\x06>;?b\xff\xe7\x00\x04\x00\x00\xff\xdb\x00C\x00\x04\x03\x03\x04\x03\x03\x04\x04\x04\x04\x05\x05\x04\x05\x06\n'
>>> and so on.
I tried to attach the code returned by the camera  (with two
"--IPCamBoundary\r\n", which seem
to be the begining of a frame.) but it was rejected by the image-sig list...

-------------------------------------------------------------------------------
Script:

class myCamera(object):
    def __init__(self, url = 'http://192.168.1.3/GetData.cgi


', param = None):
        self.url = url
        self.param = param
        self.state = 0
        self.buffer = ''
        self.limit = 8092

    def Start(self):
        try:
            self.fp = urllib2.build_opener().open(self.url)
        except URLError:
            print u"""Check connection"""
        self.state = True

    def Stop(self):
        self.fp.close()
        self.state = 0

    def NextFrame(self):
        if self.state:
            temp = self.fp.read(self.limit)
            self.buffer += temp
            boundary = self.buffer.find(r"""--IPCamBoundary""")
            count = self.buffer.count(r"""--IPCamBoundary""")
            if boundary <> -1:
                if count > 1:
                    begin = boundary + 43
                    end = self.buffer.rfind(r"""--IPCamBoundary""")
                    buff = self.buffer[boundary:end-1]
                    output = cStringIO.StringIO()
                    output.write(buff)
                    contents = output.getvalue()
                    image = Image.open(cStringIO.StringIO(contents))
                    output.close()

This script results in a traceback:
image = Image.open(cStringIO.StringIO(contents))
  File "D:\Python26\lib\site-packages\PIL\Image.py", line 1980, in open
    raise IOError("cannot identify image file")
IOError: cannot identify image file
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From majoris.ursae at yahoo.co.uk  Tue Sep 14 05:55:22 2010
From: majoris.ursae at yahoo.co.uk (majoris.ursae at yahoo.co.uk)
Date: Tue, 14 Sep 2010 12:55:22 +0900
Subject: [Image-SIG] Stereoscopic analysis
Message-ID: <AANLkTinui2MUudd3NWUDF_6iC8oZ5=Tqk=SvksZT+cz4@mail.gmail.com>

Hello everybody,
I would be grateful if someone give me some hints on how to extract average
height from two overlapping aerial photographs preferably in Python
environment.
Thank you!
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From andrewwilson at alum.mit.edu  Tue Sep 14 12:55:16 2010
From: andrewwilson at alum.mit.edu (Andrew Wilson)
Date: Tue, 14 Sep 2010 06:55:16 -0400
Subject: [Image-SIG] Stereoscopic analysis
In-Reply-To: <AANLkTinui2MUudd3NWUDF_6iC8oZ5=Tqk=SvksZT+cz4@mail.gmail.com>
References: <AANLkTinui2MUudd3NWUDF_6iC8oZ5=Tqk=SvksZT+cz4@mail.gmail.com>
Message-ID: <AANLkTin1FYkPbC_4Kn77M1k95ZUQ8mTAAMHu8AW7jksg@mail.gmail.com>

Hello,
Take a look at OpenCV,  it has python bindings and can perform some form or
3D reconstruction from multiple images:

http://opencv.willowgarage.com/documentation/python/camera_calibration_and_3d_reconstruction.html

 Andrew



On Mon, Sep 13, 2010 at 11:55 PM, <majoris.ursae at yahoo.co.uk> wrote:

> Hello everybody,
> I would be grateful if someone give me some hints on how to extract average
> height from two overlapping aerial photographs preferably in Python
> environment.
> Thank you!
>
> _______________________________________________
> Image-SIG maillist  -  Image-SIG at python.org
> http://mail.python.org/mailman/listinfo/image-sig
>
>
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From cannon.el at gmail.com  Fri Sep 24 20:00:11 2010
From: cannon.el at gmail.com (Edward Cannon)
Date: Fri, 24 Sep 2010 11:00:11 -0700
Subject: [Image-SIG] IOError "decoder jpeg not available" on Win7 (2nd
 try)
In-Reply-To: <4C9CB951.1080905@theflorys.org>
References: <4C87ED4F.1060704@theflorys.org>
	<D4363AE7-89FB-42E2-8680-2B6FAB429A10@gmail.com>
	<4C9CB951.1080905@theflorys.org>
Message-ID: <4C9CE72B.8010704@gmail.com>

the only things I can think of is writing a script that opens a jpeg and 
trying that or maybe trying 1.1.6 instead of 1.1.7. I personally don't 
use the pilconvert script, that might be the problem
On 9/24/2010 7:44 AM, David wrote:
> On 9/8/2010 6:04 PM, Edward Cannon wrote:
>> That seems weird. I have win7 and python 2.6 and do not have any
>> problems. Maybe a clean install will help.
>> Edward Cannon
>> Unicorn School
>>
>>
>>
>> On Sep 8, 2010, at 1:08 PM, David <lists at theflorys.org> wrote:
>>
>>> I sent this to the list a week ago with no result. 2nd try.
>>>
>>> I am running Python 2.6 on a new Win7 machine. I have installed PIL
>>> from the PIL-1.1.7.win32-py2.6.exe binary. I am trying to resize a
>>> jpg. I get the IOError message "decoder jpeg not available" when I
>>> call the save() method:
>>>
>>> im = Image.open(infile)
>>> im = im.resize(newsize,Image.ANTIALIAS)
>>> im.save(outfile, "JPEG", quality=90)
>>>
>>> I have scanned a year of back messages on this list without seeing any
>>> relevant advice. I have used PIL with the same code on other Win32
>>> machines without problems. Since it is a prebuild binary, the jpeg
>>> decoder should be present.
>>>
>>> Help or advice would be appreciated.
>>>
>>> David Flory
>>> _______________________________________________
>>> Image-SIG maillist - Image-SIG at python.org
>>> http://mail.python.org/mailman/listinfo/image-sig
>>
> I just did a clean install of PIL 1.1.7 from the Win32 binary. I still
> get an error message when I run pyconvert. Here is my command:
>
> C:\Users\David\Pictures\test>pilconvert test.jpg test.png
> cannot convert image (<type 'exceptions.IOError'>:decoder jpeg not
> available)
>
> What file contains the "decoder jpeg" and how might I find it?
>
> David


From lists at theflorys.org  Mon Sep 27 03:38:35 2010
From: lists at theflorys.org (David)
Date: Sun, 26 Sep 2010 21:38:35 -0400
Subject: [Image-SIG] IOError "decoder jpeg not available" on Win7 (2nd
 try)
In-Reply-To: <4C9CE72B.8010704@gmail.com>
References: <4C87ED4F.1060704@theflorys.org>
	<D4363AE7-89FB-42E2-8680-2B6FAB429A10@gmail.com>
	<4C9CB951.1080905@theflorys.org> <4C9CE72B.8010704@gmail.com>
Message-ID: <4C9FF59B.5090303@theflorys.org>

On 9/24/2010 2:00 PM, Edward Cannon wrote:
> the only things I can think of is writing a script that opens a jpeg and
> trying that or maybe trying 1.1.6 instead of 1.1.7. I personally don't
> use the pilconvert script, that might be the problem
> On 9/24/2010 7:44 AM, David wrote:
>> On 9/8/2010 6:04 PM, Edward Cannon wrote:
>>> That seems weird. I have win7 and python 2.6 and do not have any
>>> problems. Maybe a clean install will help.
>>> Edward Cannon
>>> Unicorn School
>>>
>>>
>>>
>>> On Sep 8, 2010, at 1:08 PM, David <lists at theflorys.org> wrote:
>>>
>>>> I sent this to the list a week ago with no result. 2nd try.
>>>>
>>>> I am running Python 2.6 on a new Win7 machine. I have installed PIL
>>>> from the PIL-1.1.7.win32-py2.6.exe binary. I am trying to resize a
>>>> jpg. I get the IOError message "decoder jpeg not available" when I
>>>> call the save() method:
>>>>
>>>> im = Image.open(infile)
>>>> im = im.resize(newsize,Image.ANTIALIAS)
>>>> im.save(outfile, "JPEG", quality=90)
>>>>
>>>> I have scanned a year of back messages on this list without seeing any
>>>> relevant advice. I have used PIL with the same code on other Win32
>>>> machines without problems. Since it is a prebuild binary, the jpeg
>>>> decoder should be present.
>>>>
>>>> Help or advice would be appreciated.
>>>>
>>>> David Flory
>>>> _______________________________________________
>>>> Image-SIG maillist - Image-SIG at python.org
>>>> http://mail.python.org/mailman/listinfo/image-sig
>>>
>> I just did a clean install of PIL 1.1.7 from the Win32 binary. I still
>> get an error message when I run pyconvert. Here is my command:
>>
>> C:\Users\David\Pictures\test>pilconvert test.jpg test.png
>> cannot convert image (<type 'exceptions.IOError'>:decoder jpeg not
>> available)
>>
>> What file contains the "decoder jpeg" and how might I find it?
>>
>> David
>

I solved the problem on my third "re-install PIL"  The problem was that 
on Win7 the installation puts a copy in my

C:\Python26\Lib\site-packages\PIL

directory BUT (the kicker) I had a second installation in my

C:\Users\David\AppData\Roaming\Python\Python26\site-packages

that also had to be deleted before doing the reinstall.  The second one 
may come from PyPM.  I am not sure but deleting it solved the problem.

Thanks to all for the suggestions.

David

From don at donvest.org  Tue Sep 28 01:43:16 2010
From: don at donvest.org (Donald Price)
Date: Mon, 27 Sep 2010 19:43:16 -0400
Subject: [Image-SIG] 64 bit  _imaging.so
Message-ID: <201009271943.16147.don@donvest.org>

I am now running opensuse 11.3 on an HP computer with i7-860 processor. Have 
loaded python 2.6.5 and it works fine except for  PIL. I can import  PIL,  
Image, and ImageDraw. But when I import ImageFont or try to use Image I get 
the error "The _imaging C module is not installed".  It seems that the PIL I 
downloaded is a 32 bit version and I need a 64 bit version. Can you help me?

Many thanks.
Don

From chuck.lloyd at gmail.com  Fri Sep 17 17:28:24 2010
From: chuck.lloyd at gmail.com (Chuck Lloyd)
Date: Fri, 17 Sep 2010 11:28:24 -0400
Subject: [Image-SIG] Problem with 16 bit scaling and drawing, and workaround
Message-ID: <AANLkTimo_GFM=ruD02K_g2dWPo73He5-08iCZFBnS6K0@mail.gmail.com>

I'm working with 16bit gray-scale images but I'm having some problems
with drawing and higher order interpolation.

Nearest-neighbor interpolation works fine, but anything else corrupt the
image.

I'm using version 1.1.7 on win32 that comes with Python(x,y).

If I convert the images to mode "I" (32bit int) and then back to "I;16" it
seems to work fine.

I looked through libImaging for the interpolation code.
It looks like it is off by half in the width, uUsing a 32bit
stride rather than 16 bit stride.

I don't have time right now to learn the codebase and make the fix
but maybe someone more familiar, more motivated or with more time can.

The code below shows the problem and workaround.


----------------------------------------------------------
import Image, ImageDraw


def draw_doodle( img ):
    draw = ImageDraw.Draw(img)

    (width,height) = img.size
    width = width - 1
    height = height -1
    draw.line( (0, 0, width, height ), fill="#FFFFFF")
    draw.line( (width, 0, 0, height ), fill="#CCCCCC")
    draw.line( (0, height/2, width, height/2), fill="#888888")


# Make a blank tiff
file = r'dummy.tif'
blank = Image.new("I;16", (80,123))
blank.save( file )

# Draw on image
im16 = Image.open( file )
draw_doodle( im16 )
print im16
im16.show()
#Scale it
im16s = im16.resize((80,126), Image.BILINEAR )
im16s.show()

# Now do it after converting to I type
im16 = Image.open( file )
im32 = im16.convert("I")

draw_doodle( im32 )
print im32
im32.show()

#Scale it
im32s = im32.resize((80,126), Image.BILINEAR )
im = im32s.convert("I;16")
print im
im.show()

Chuck
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From majoris.ursae at yahoo.co.uk  Sun Sep 19 12:19:10 2010
From: majoris.ursae at yahoo.co.uk (majoris.ursae at yahoo.co.uk)
Date: Sun, 19 Sep 2010 19:19:10 +0900
Subject: [Image-SIG] Digital Number
Message-ID: <AANLkTikBzd3O+jqUySmcHfs21yvcmQpatG0o__=nRsFf@mail.gmail.com>

Hello Everybody,
How to read pixel wise Digital Number (DN) of a JPG image using PIL?
Thanks!
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From rjngrj2010 at gmail.com  Wed Sep 22 07:24:26 2010
From: rjngrj2010 at gmail.com (Rajan Gurjar)
Date: Wed, 22 Sep 2010 01:24:26 -0400
Subject: [Image-SIG] Hi I have problems with tif files
Message-ID: <1285133066.4135.5.camel@rajan-laptop>

Image.open('filename') and im.info gives the following

(640, 480)
{'resolution': (1, 1), 'compression': 'raw'}
F;32BF
TIFF


But when I run the im.show() it gives the following error.
>>> im.show()
Traceback (most recent call last):
  File "<pyshell#0>", line 1, in <module>
    im.show()
  File "/usr/lib/python2.6/dist-packages/PIL/Image.py", line 1483, in
show
    _show(self, title=title, command=command)
  File "/usr/lib/python2.6/dist-packages/PIL/Image.py", line 2123, in
_show
    apply(_showxv, (image,), options)
  File "/usr/lib/python2.6/dist-packages/PIL/Image.py", line 2127, in
_showxv
    apply(ImageShow.show, (image, title), options)
  File "/usr/lib/python2.6/dist-packages/PIL/ImageShow.py", line 41, in
show
    if viewer.show(image, title=title, **options):
  File "/usr/lib/python2.6/dist-packages/PIL/ImageShow.py", line 62, in
show
    base = Image.getmodebase(image.mode)
  File "/usr/lib/python2.6/dist-packages/PIL/Image.py", line 245, in
getmodebase
    return ImageMode.getmode(mode).basemode
  File "/usr/lib/python2.6/dist-packages/PIL/ImageMode.py", line 50, in
getmode
    return _modes[mode]
KeyError: 'F;32BF'

I have no idea why this happens.
I will appreciate your response. The file opens with ImageJ and
ImageMagick. It is a 8-bit RGB file.
I have looked up Google and came across few similar queries but do not
find any resolution other than suggestions to link xv to ImageMagick.
Because the solutions are old i.e., dated in 2007, I am not sure if this
is a fix. Please help.
Thanks,
Rajan


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From majoris.ursae at yahoo.co.uk  Fri Sep 24 03:32:10 2010
From: majoris.ursae at yahoo.co.uk (majoris.ursae at yahoo.co.uk)
Date: Fri, 24 Sep 2010 10:32:10 +0900
Subject: [Image-SIG] PIL code not working
Message-ID: <AANLkTinYjY8r1CpA6cFCt63QFd88hfY+PDQHY-En3d+q@mail.gmail.com>

Hello everybody, Greetings!
In PIL, the following codes does not work anymore:
im.getpixel(5,7)
list(im.getdata())
Does anyone knows what is wrong below and kindly suggest new codes?
>>> from PIL import Image
>>> im = Image.open('E://test.jpg')
>>> im.load()
>>> im.getpixel (5,7)
Traceback (most recent call last):
  File "<pyshell#3>", line 1, in <module>
    im.getpixel(4,6)
TypeError: getpixel() takes exactly 2 arguments (3 given)
>>> list(im.getdata())
no response for one day!
Thank you so much!!
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From dino at phidev.org  Sat Sep 25 23:42:13 2010
From: dino at phidev.org (Florian Ludwig)
Date: Sat, 25 Sep 2010 23:42:13 +0200
Subject: [Image-SIG] misleading error when using negative floats
Message-ID: <1285450933.5821.13.camel@snowball>

Hi,

img.paste accepts positive floats with an deprecation warning but not
negative floats. The following exception is thrown:
  File "/usr/lib/python2.6/dist-packages/PIL/Image.py", line 1101, in
paste
    self.im.paste(im, box, mask.im)
ValueError: images do not match

I got two wishes :)

 - be more consistent
   (for example working negative floats with a deprecation warning?)

 - throw a more descriptive error

It cost me some hours as I was investigating in the wrong direction as I
thought the image was wrong, not the positioning.

Thank you,
 Florian


-- 
Florian Ludwig <dino at phidev.org>
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