From pyinsan@hotmail.com  Sat Sep  1 16:13:37 2001
From: pyinsan@hotmail.com (phoon yinsan)
Date: Sat, 01 Sep 2001 15:13:37
Subject: [Image-SIG] (no subject)
Message-ID: <F133aiMGYg51CvpuMYn00003459@hotmail.com>

I tried to install the PIL into my python1.5 extension on my linux. I
followed the instructions in the README file. So, after I did all make  
makefile and make, i tried to import _imaging in the python interpreter as  
told in the README file. But, I've got any error importing it. I'm not sure  
what went wrong during the installation. Can someone please help me. I need  
PIL for my project?

_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp



From fredrik@pythonware.com  Sun Sep  2 13:07:16 2001
From: fredrik@pythonware.com (Fredrik Lundh)
Date: Sun, 2 Sep 2001 14:07:16 +0200
Subject: [Image-SIG] build problems under 1.5
References: <F133aiMGYg51CvpuMYn00003459@hotmail.com>
Message-ID: <002801c133a7$d1070de0$42fb42d5@hagrid>

From: "phoon yinsan" <pyinsan@hotmail.com> wrote:

(please include a valid subject line when posting to a
public mailing list)

> I tried to install the PIL into my python1.5 extension on my linux.

is that Python 1.5, or 1.5.2?  (recent versions of PIL hasn't
been tested with Python versions before 1.5.2.  if you're still
using 1.5, consider upgrading to 2.1.1)

> I followed the instructions in the README file. So, after I did all make  
> makefile and make, i tried to import _imaging in the python interpreter as  
> told in the README file. But, I've got any error importing it.

how about telling us *what* error you got?

</F>



From marc@bowery.com  Sun Sep  2 16:28:11 2001
From: marc@bowery.com (marc lindahl)
Date: Sun, 02 Sep 2001 11:28:11 -0400
Subject: [Image-SIG] aliasing on resize or thumnail?
Message-ID: <B7B7C84A.1363A%marc@bowery.com>

Hi,
A few of us are comparing PIL versus ImageMagick for a web application of
creating thumnails for image archives...

We're getting aliasing from PIL while doing this... and it seems that the
filter parameters in resize() don't do anything.  Anyone have a clue?

Here is a web page comparing the two:

http://www.bickersfamily.org/Photos/PILvsIM/




From jal@cinesite.co.uk  Mon Sep  3 18:25:51 2001
From: jal@cinesite.co.uk (John Lockwood)
Date: Mon, 03 Sep 2001 18:25:51 +0100
Subject: [Image-SIG] 16 bit support
Message-ID: <3B93BD1E.85254825@cinesite.co.uk>

Hi Tom,

I'm very interested is this. The 16bit to float idea is a good one.

Hello Tom,

At 09:06 PM 8/30/2001 +1000, you wrote:
>Hi
>
>Early days playing with PIL, I have added PGM support to load and save
16
>bit images, is anyone interested in the patch (its only a few lines)?

Yes, I'm interested! Adding this capability would be a nice improvement
to
PIL. This brings up a few questions.
- Can 16-bit TIF files be also loaded?
- How do you display the image? I.e. do you display only the top 8-bits
or
do you keep all of it, interpolating down to 8-bits?
- Can you read/write a 16-bit pixel?


>
>A question was posted some time ago on this list about the behaviour of

>the histogram method on integer images, which went unanswered. Could I
>respectfully ask if there is much interest in extending PIL so that
there
>are working implementations of useful methods such as (for example)
>histograms for modes I and F. This raises several implementation
>questions, for example it becomes worthwhile caching the extreme values
of
>the image data, and a histogram of a mode F image would need to define
bin
>width as well as extremes.
>

Once again I'm interested, especially for the F format. My thinking is
that
since full support of 16-bit images in PIL would be a big undertaking,
since most processing functions are hard-coded for 8-bits. The next best

thing would be to read a 16-bit image and convert it to float, then you
can
do a lot of processing (employing even packages other then PIL), then
you
convert back to a 16-bit image and display.

That's my thinking, anyway. I'm curious, does this procedure sound
reasonable or can anyone point out any flaws with this thinking?


>A last question, I have not been able to find out anything about the IM

>image format supported by the PIL. Even my prized OReilly Encyclopaedia
of
>graphics File Formats is silent. Could anyone enlighten me?
>
>Tom Harris
<mailto:TheNOSPAMPloppies@bigpond.com>TheNOSPAMPloppies@bigpond.com
>  [remove NOSPAM to reply]





From srichter@cbu.edu  Tue Sep  4 04:14:02 2001
From: srichter@cbu.edu (Stephan Richter)
Date: Mon, 03 Sep 2001 22:14:02 -0500
Subject: [Image-SIG] Making animated GIFs
Message-ID: <5.1.0.14.2.20010903220814.03700a50@mail.cbu.edu>

Hello everyone,

is there a Python program (preferably using PIL) that can generate animated 
GIFs?

Here a little background:
I am developing an online homework system. The person making up the 
question can already create graphs using a PIL image. But sometimes these 
graphs need to have small animations, such as sketching the flight of a 
canon ball.
Online means also, that I have multiple users using the system at the same 
time with different variables.

Here my current thoughts:
If there is nothing in Python, I will do the following: Make a loop that 
the user can use generating many GIFs stored in temporary files (using 
tempfile). Then I use gifmerge (a C program) to merge all the GIFs 
together. Luckily, gifmerge returns a bit stream, which I can capture 
without generating a new file.

Any ideas? As always, I am grateful to any suggestions or comments!!!

Regards,
Stephan

--
Stephan Richter
CBU - Physics and Chemistry Student
Web2k - Web Design/Development & Technical Project Management



From aheitner@andrew.cmu.edu  Tue Sep  4 17:47:57 2001
From: aheitner@andrew.cmu.edu (Ari Heitner)
Date: Tue, 4 Sep 2001 12:47:57 -0400
Subject: [Image-SIG] PIL from C/C++
Message-ID: <20010904124757.A1123@andrew>

[please cc: me on replies]

Hi,

I poked around thru the PIL docs on pythonware.com, and didn't see anything
on this. I admit to not having searched the newsgroup exhaustively.

Simple application: I'm adding texture support to VPython
(virtualphoton.pc.cc.cmu.edu/projects/visual, sf.net/projects/visualpython),
everyone's favorite Python visualization toolkit. VPython is written in C++,
using CXX. I don't need much functionality from PIL: load simple images,
read the pixels out of them, give them to GL. Easy right?

But I haven't seen any docs, or header files in the PIL distribution that
seem especially tuned to this (like Numeric's C API stuff).

Am I just missing it?


Cheers,

Ari Heitner


From jeske@chat.net  Wed Sep  5 02:32:12 2001
From: jeske@chat.net (David Jeske)
Date: Tue, 4 Sep 2001 18:32:12 -0700
Subject: [Image-SIG] Re: aliasing on resize or thumnail?
Message-ID: <20010904183212.M16114@mozart.chat.net>

I also was comparing PIL's resize filter, this time to photoshop. As
near as I can tell, the filter paramaters in resize() have no
effect. It certainly isn't producing a BILINEAR or BICUBIC filtered
resize image.

Anyone have any idea about this bug?

-- 
David Jeske (N9LCA) + http://www.chat.net/~jeske/ + jeske@chat.net


From aclover@1value.com  Wed Sep  5 13:13:11 2001
From: aclover@1value.com (Clover Andrew)
Date: Wed, 5 Sep 2001 14:13:11 +0200
Subject: [Image-SIG] Re: aliasing on resize or thumnail?
Message-ID: <D58B0195B58937489E89124469E57CA20D3C1B@EX1.1value.com>

David Jeske <jeske@chat.net> wrote:

> As near as I can tell, the filter paramaters in resize() have no
> effect.

They do blur the picture a little for me, in comparison if NEAREST. I
believe what is happening - by design - is that BILINEAR and BICUBIC are
just exactly that: they calculate each pixel color from the four pixels
closest to it in the original image. This is fine for scaling up of
course, but to get a smooth downsampling you need to average out every
pixel in the source image covered by the destination pixel, not just the
four at the corners.

These options work fine if you're reducing an image to one-half
(linearly) of its current size, but are pretty poor for any other scale
factor below 1. It would be very handy to have some new filter options
for scaling down, since thumbnails are indeed an extremely common
application of scripted image processing.

--=20
Andrew Clover
Technical Consultant
1VALUE.com AG


From marc@bowery.com  Wed Sep  5 15:20:53 2001
From: marc@bowery.com (marc lindahl)
Date: Wed, 05 Sep 2001 10:20:53 -0400
Subject: [Image-SIG] Re: aliasing on resize or thumnail?
In-Reply-To: <D58B0195B58937489E89124469E57CA20D3C1B@EX1.1value.com>
Message-ID: <B7BBAD04.139F6%marc@bowery.com>


> From: "Clover Andrew" <aclover@1value.com>
> 
> They do blur the picture a little for me, in comparison if NEAREST. I
> believe what is happening - by design - is that BILINEAR and BICUBIC are
> just exactly that: they calculate each pixel color from the four pixels
> closest to it in the original image.

That's not how it's supposed to work, to be an antialising filter, is it?
It should apply a linear or bicubic curve over how ever many pixels (in the
source) map to the square of destination pixels.  Is it a bug, then??





From fredrik@pythonware.com  Wed Sep  5 16:00:01 2001
From: fredrik@pythonware.com (Fredrik Lundh)
Date: Wed, 5 Sep 2001 17:00:01 +0200
Subject: [Image-SIG] Re: aliasing on resize or thumnail?
References: <B7BBAD04.139F6%marc@bowery.com>
Message-ID: <000d01c1361b$7107fb90$0900a8c0@spiff>

marc lindahl <marc@bowery.com> wrote:
> > They do blur the picture a little for me, in comparison if NEAREST. I
> > believe what is happening - by design - is that BILINEAR and BICUBIC are
> > just exactly that: they calculate each pixel color from the four pixels
> > closest to it in the original image.
>
> That's not how it's supposed to work, to be an antialising filter, is it?

it isn't an anti-aliasing filter: the BILINEAR and BICUBIC resampling
filters are intended for geometric transforms (rotations, quadrilateral
warps), not thumbnail generation.

(and the ANTIALIAS filter isn't available in 1.1.2)

you can get a better-than-nothing result by resizing multiple times
with the BILINEAR filter; untested:

    while im.size[0] > size[0] or im.size[1] > size[1]:
        im = im.resize(
            (max(size[0], im.size[0]/2), max(size[1], im.size[1]/2)),
            Image.BILINEAR
        )

</F>




From marc@bowery.com  Wed Sep  5 16:18:01 2001
From: marc@bowery.com (marc lindahl)
Date: Wed, 05 Sep 2001 11:18:01 -0400
Subject: [Image-SIG] Re: aliasing on resize or thumnail?
In-Reply-To: <000d01c1361b$7107fb90$0900a8c0@spiff>
Message-ID: <B7BBBA68.13A15%marc@bowery.com>


> From: "Fredrik Lundh" <fredrik@pythonware.com>
> Date: Wed, 5 Sep 2001 17:00:01 +0200
> To: <image-sig@python.org>
> Subject: Re: [Image-SIG] Re: aliasing on resize or thumnail?
> 
> marc lindahl <marc@bowery.com> wrote:
>>> They do blur the picture a little for me, in comparison if NEAREST. I
>>> believe what is happening - by design - is that BILINEAR and BICUBIC are
>>> just exactly that: they calculate each pixel color from the four pixels
>>> closest to it in the original image.
>> 
>> That's not how it's supposed to work, to be an antialising filter, is it?
> 
> it isn't an anti-aliasing filter: the BILINEAR and BICUBIC resampling
> filters are intended for geometric transforms (rotations, quadrilateral
> warps), not thumbnail generation.

Then why is it even an option in resize(), which doesn't do any geometric
transforms, but only resizing?

> 
> (and the ANTIALIAS filter isn't available in 1.1.2)

Is there such a filter available in other versions?

> 
> you can get a better-than-nothing result by resizing multiple times
> with the BILINEAR filter; untested:
> 
> while im.size[0] > size[0] or im.size[1] > size[1]:
> im = im.resize(
> (max(size[0], im.size[0]/2), max(size[1], im.size[1]/2)),
> Image.BILINEAR
> )

That looks like a huge performance hit.  Are you seriously suggesting it?

What about the ImageFilters?  Like perhaps BLUR, BLUR_MORE, SMOOTH,
SMOOTH_MORE?  What exactly are they doing?  Perhaps they could be used to
pre-filter an image before shrinking it?



From bzdank@sprynet.com  Wed Sep  5 23:25:56 2001
From: bzdank@sprynet.com (Buddy Zdankiewicz)
Date: Wed, 5 Sep 2001 15:25:56 -0700
Subject: [Image-SIG] The Image.resize problem with BICUBIC and BILINEAR
Message-ID: <004501c13659$bc666160$d1caf7a5@oemcomputer>

I saw a thread in last months archive about people struggling with image
resize issues.

I started out my Python learning curve by trying to make a jpeg slide show
viewer similar to the one on theO'Reilly Book's accompanying CD (2nd edition
covers python 2.0). I wanted to add some auto scaling/sizing. Everything
seemed to work well, and there seemed to be differences between NEAREST and
BICUBIC so I was happy.

from the OReilly distribution
# 99-07-28 fl PIL release 1.0 final
#
# Copyright (c) 1997-99 by Secret Labs AB.
# Copyright (c) 1995-97 by Fredrik Lundh.

and python 2.0


I didn't start to run into Image.resize problems until after going through a
minor upgrade hell.After eventually getting Python 2.1 and IDLE 0.8
installed the original PIL files I was using seemed not to work at all. But
my upgrade process may have been to blame.

I downloaded the latest Pil file from PythonWare and things at least ran,
but the BILINEAR and BICUBIC options produced no recognizable image, only a
single colored horizontal line. NEAREST worked as always.

I wrote a loop that resized a 400x600 image from 1x1 all the way to 800x800.
Oh yeah, it was a jpeg image, I haven't tried any other types.

scale value            result
1x1-16x16           varying mottled squares
17x17 - 21x21    recognizable image
22x22 and greater was one or two horizontal colored lines.

I am also over my head when looking at the source for Image.pi. It seems
like resize leads to and endless recursion and I can't see where the
BILINEAR value gets used, other than for a recognized value test.

I could send some source if that is of interest



Edward Zdankiewicz
bzdank@sprynet.com
(415) 461-8535




From P94468@motorola.com  Mon Sep 10 20:48:16 2001
From: P94468@motorola.com (Sutherland Bryce-P94468)
Date: Mon, 10 Sep 2001 12:48:16 -0700
Subject: [Image-SIG] raise ImportError
Message-ID: <01CA656A687ED211926B00805F7791400879FFFD@az25exm02.geg.mot.com>

Greetings,

I keep getting this:

  File "D:\Python22\PIL\Image.py", line 43, in __getattr__
    raise ImportError, "The _imaging C module is not installed"
ImportError: The _imaging C module is not installed

======

How do install the _imaging C module ?

thanks,
Bryce



From fredrik@pythonware.com  Mon Sep 10 21:28:13 2001
From: fredrik@pythonware.com (Fredrik Lundh)
Date: Mon, 10 Sep 2001 22:28:13 +0200
Subject: [Image-SIG] raise ImportError
References: <01CA656A687ED211926B00805F7791400879FFFD@az25exm02.geg.mot.com>
Message-ID: <00f901c13a37$21865ab0$42fb42d5@hagrid>

"Sutherland Bryce-P94468" wrote:

>   File "D:\Python22\PIL\Image.py", line 43, in __getattr__
>     raise ImportError, "The _imaging C module is not installed"
> ImportError: The _imaging C module is not installed
> 
> ======
> 
> How do install the _imaging C module ?

you look for _imaging.pyd (or _imaging.dll), and move
it to your installation's PIL or DLLs directory.

if it still doesn't work, fire up an interpreter and type
"import _imaging", and let us know what it says.

</F>



From yesok@leadtech21.com  Wed Sep 12 06:13:22 2001
From: yesok@leadtech21.com (yesok)
Date: Wed, 12 Sep 2001 14:13:22 +0900
Subject: [Image-SIG] python wrapper for v4l/v4l2 api
Message-ID: <3B9EEEF2.B526C736@leadtech21.com>

Hello,
I am looking for python wrapper for  v4l/v4l2 api so that we may see
camera images through
bttv driver under python.
Could you tell me who did that already?
If not yet done what is the right steps to follow?

Thank you in advance.

Yesok Yoon,
Leadtech Corp.,
Bundang, Korea




From romain@zzict.com  Fri Sep 14 12:16:35 2001
From: romain@zzict.com (Romain Slootmaekers)
Date: Fri, 14 Sep 2001 13:16:35 +0200 (CEST)
Subject: [Image-SIG] PIL problem
Message-ID: <Pine.LNX.4.21.0109141312110.4619-100000@scrooge.zzict.com>

Yo,
I installed PIL with Python2.1 and also installed the ijg library,
but with a simple test program i get 'IOError: decoder jpeg not available'
appearantly loading a jpeg works, but resizing doesn't ....

can Anybody help me with that ? the program as well as the traceback are
below 
(please respond to me directly as I'm not subscribed to the mailing list)

TIA, Sloot




------------------- program ----------------------
#
import Image
im=Image.open('/home/romain/Appropriately-Left-Handed-2.jpg')
print im.format,im.mode,im.size
out=im.resize((128,128))
out.save("test.jpg")

------------------ traceback -----------------

Traceback (most recent call last):
  File "test.py", line 4, in ?
    out=im.resize((128,128))
  File "/home/zope/Python2.1/lib/python2.1/site-packages/PIL/Image.py",
line 661, in resize
    self.load()
  File
"/home/zope/Python2.1/lib/python2.1/site-packages/PIL/ImageFile.py", line
140, in load
    d = Image._getdecoder(self.mode, d, a, self.decoderconfig)
  File "/home/zope/Python2.1/lib/python2.1/site-packages/PIL/Image.py",
line 243, in _getdecoder
    raise IOError, "decoder %s not available" % decoder_name
IOError: decoder jpeg not available



From lbates@syscononline.com  Mon Sep 17 22:50:58 2001
From: lbates@syscononline.com (Larry Bates)
Date: Mon, 17 Sep 2001 16:50:58 -0500
Subject: [Image-SIG] PIL ImageDraw module question
Message-ID: <2C1A673A677CD311988E00902773A6DD35C324@qbert.syscon-computers.com>

I have used PIL to do image conversions, but I have a project that 
I'm working on where I need to place textual information on a TIFF
file and save as TIFF.  I see how to manipulate the TIFF file, but
am unsure how to handle the text.  ImageDraw seems to have a 
text method, but refers  to ImageFont class.  In looking at the
ImageFont class, it refers to BDF and PCF fonts.  I'm working
in Win32 environment, so I'm confused about how I can 
make this work with TTF or Type 1 fonts.  Any help would be 
greatly appreciated.

Regards, Larry



From jonathan.gilligan@vanderbilt.edu  Mon Sep 17 22:54:45 2001
From: jonathan.gilligan@vanderbilt.edu (Jonathan M. Gilligan)
Date: Mon, 17 Sep 2001 16:54:45 -0500
Subject: [Image-SIG] Saving 12-bit grayscale from PIL
Message-ID: <5.1.0.14.0.20010917163049.051baa30@g.mail.vanderbilt.edu>

I am working extensively with images recorded as 12-bit grayscale.

I can successfully read in the raw data using array.array and convert it to 
an "I" mode PIL image, but I can't then save it, since I can't find a 
compatible file format for output. The FORMATS file suggests that I should 
be able to save an "I" image to .png, but when I try to save a 128 * 256 
"I" image to file as a .png image, PIL dumps core.

I am using ActiveState Python 2.1 for Windows and PIL 1.1.1 (obtained using 
the ActiveState package manager). When I try to save the image from PIL 
using "img.save('foo.png','PNG')", where img is an Image.Image object, 
python tells me, "C:\Python21\PIL\EpsImagePlugin.py:23: DeprecationWarning: 
the regex module is deprecated; please use the re module import regex, 
string" and then crashes python with an illegal memory access.

Does anyone have any suggestions for working with 12-bit grayscale images 
using PIL?

Thanks,
Jonathan Gilligan



From jonathan.gilligan@vanderbilt.edu  Tue Sep 18 00:07:46 2001
From: jonathan.gilligan@vanderbilt.edu (Jonathan M. Gilligan)
Date: Mon, 17 Sep 2001 18:07:46 -0500
Subject: [Image-SIG] Re: Saving 12-bit grayscale from PIL
Message-ID: <5.1.0.14.0.20010917172356.02e2c1d0@g.mail.vanderbilt.edu>

Here is a minimal script to reproduce the problem:

import Numeric, Image, PngImagePlugin
na = Numeric.cumsum(Numeric.cumsum(Numeric.ones((128,256),Numeric.Int32)),1)
print na.shape
print na[0,255]
print na[1,255]
print na[127,0]
print na[127,1]
print na[127,255]
s = na.tostring()
img = Image.fromstring('I', (256,128), s)
print img.size
print img.getpixel((255,0))
print img.getpixel((255,1))
print img.getpixel((0,127))
print img.getpixel((1,127))
print img.getpixel((255,127))

img.save('foo.png')



This produces output:
 >pythonw -u foo.py
(128, 256)
256
512
128
256
32768
(256, 128)
256
512
128
256
32768
 >Exit code: -1073741819

The crash occurs on line 355 of ImageFile.py: "l, s, d = e.encode(bufsize)".

I would note, incidentally, that the PIL 1.1.1 source 
(http://www.pythonware.com/downloads/Imaging-1.1.1.tar.gz) mixes whitespace 
and tabs in many of the Imaging-1.1.1\PIL\*.py files. I don't think this 
would be the source of the problems, but one never knows.

Jonathan
===========================================================================
Jonathan M. Gilligan                     <jonathan.gilligan@vanderbilt.edu>

He was allying himself to science, for what was science but the absence of
prejudice backed by the presence of money? --- Henry James, The Golden Bowl



From fredrik@pythonware.com  Tue Sep 18 07:33:10 2001
From: fredrik@pythonware.com (Fredrik Lundh)
Date: Tue, 18 Sep 2001 08:33:10 +0200
Subject: [Image-SIG] Re: Saving 12-bit grayscale from PIL
References: <5.1.0.14.0.20010917172356.02e2c1d0@g.mail.vanderbilt.edu>
Message-ID: <003701c1400b$cb7adfd0$3afb42d5@hagrid>

Jonathan M. Gilligan wrote:

> I am using ActiveState Python 2.1 for Windows and PIL 1.1.1 (obtained using 
> the ActiveState package manager). When I try to save the image from PIL 
> using "img.save('foo.png','PNG')", where img is an Image.Image object, 
> python tells me, "C:\Python21\PIL\EpsImagePlugin.py:23: DeprecationWarning: 
> the regex module is deprecated; please use the re module import regex, 
> string" and then crashes python with an illegal memory access

Python 2.1 didn't exist when PIL 1.1.1 was released.  To get rid
of the warnings, use PIL 1.1.2.

> Here is a minimal script to reproduce the problem:

I doubt it qualifies as minimal when it requires more than
one extension library ;-)

Does this script work better:

import array
import Image

s = array.array("i", range(256*128)).tostring()

img = Image.fromstring('I', (256,128), s)
print img.size
print img.getpixel((255,0))
print img.getpixel((255,1))
print img.getpixel((0,127))
print img.getpixel((1,127))
print img.getpixel((255,127))

img.save('foo.png')

This works for me, with PIL 1.0 through 1.1.2 under Python 1.5.2
through 2.2a3 (all combinations I have on this machine).

If it works for you, your problem appears to be on the NumPy
side.  If it doesn't work for you, the problem appears to a broken
build.

You can get fresh binary builds from:

    http://www.pythonware.com/downloads/index.htm#pil

The 2.1.1 build should work (you have to move the files by hand
from c:\py21, though.  make sure you don't have any old PIL stuff
in the activestate tree)

> I would note, incidentally, that the PIL 1.1.1 source 
> (http://www.pythonware.com/downloads/Imaging-1.1.1.tar.gz) mixes whitespace 
> and tabs in many of the Imaging-1.1.1\PIL\*.py files. I don't think this 
> would be the source of the problems, but one never knows.

Oh, please.

</F>



From jonathan.gilligan@vanderbilt.edu  Tue Sep 18 17:40:29 2001
From: jonathan.gilligan@vanderbilt.edu (Jonathan M. Gilligan)
Date: Tue, 18 Sep 2001 11:40:29 -0500
Subject: [Image-SIG] Re: Saving 12-bit grayscale from PIL
In-Reply-To: <003701c1400b$cb7adfd0$3afb42d5@hagrid>
References: <5.1.0.14.0.20010917172356.02e2c1d0@g.mail.vanderbilt.edu>
Message-ID: <5.1.0.14.0.20010918113648.029974f0@g.mail.vanderbilt.edu>

Thanks for the more minimal script. It failed too, but when I followed your 
advice and used the binaries from Pythonware, everything worked fine.

Sorry to annoy you with the comment about mixed whitespace and tabs. I have 
seen these introduce bugs in other python code by changing scoping, so I 
honestly didn't know if that might be a problem.

Anyway, thanks for the help. I have reported the bug in their PIL build to 
ActiveState.



From he@klaki.net  Wed Sep 19 11:02:57 2001
From: he@klaki.net (=?iso-8859-1?Q?Hrafnkell_Eir=EDksson?=)
Date: Wed, 19 Sep 2001 10:02:57 +0000
Subject: [Image-SIG] all I get is a white surface
Message-ID: <20010919100257.A27928@klaki.net>

Hi

I just installed PIL 1.1.2 on a Win2k machine with Python 2.1.1.
I was trying to use it to view some images. All I got was a white
surface with the dimensions of the image. 

What I did was

import Tkinter
import Image
import ImageTk

root = Tkinter.Tk()
im = Image.open("c:/Temp/someimg.png")
tkim = ImageTk.PhotoImage(im)
l = Tkinter.Label(root, image=tkim)
l.pack()
root.mainloop()

Am I doing something wrong here? I've tried different images, and
all the images I can view in IE.

Btw. what is a good way to convert a string with raw image data (grayscale)
to a viewable PhotoImage. I tried using 
im.put(map(lambda v: "%02x", ord(v), data)), I gave up waiting after 10 min.


Thanks
  Hrafnkell

PS: I'm not a member of the list


From Aureli.Soria_Frisch@ipk.fhg.de  Wed Sep 19 12:57:50 2001
From: Aureli.Soria_Frisch@ipk.fhg.de (Aureli Soria Frisch)
Date: Wed, 19 Sep 2001 13:57:50 +0200
Subject: [Image-SIG] all I get is a white surface
In-Reply-To: <20010919100257.A27928@klaki.net>
Message-ID: <l03010d04b7ce371cc161@[153.97.92.109]>

Hi

I think you should declare a frame after the root:

>
>import Tkinter
>import Image
>import ImageTk
>
>root =3D Tkinter.Tk()

win =3D Frame(root)
win.pack()

>im =3D Image.open("c:/Temp/someimg.png")
>tkim =3D ImageTk.PhotoImage(im)

and thus change ">l =3D Tkinter.Label(root, image=3Dtkim" to:
I=3DTkinter.Label(win,image=3Dtkim)

>l.pack()
>root.mainloop()
>




>Btw. what is a good way to convert a string with raw image data (grayscale)
>to a viewable PhotoImage. I tried using
>im.put(map(lambda v: "%02x", ord(v), data)), I gave up waiting after 10 min=
=2E

im.fromstring(data), where data is an string.

Regards,
Aureli

#################################
Aureli Soria Frisch
=46raunhofer IPK
Dept. Pattern Recognition

post: Pascalstr. 8-9, 10587 Berlin, Germany
e-mail:aureli@ipk.fhg.de
fon: +49 30 39006-150
fax: +49 30 3917517
web: http://vision.fhg.de/~aureli/web-aureli_en.html
#################################




From he@klaki.net  Wed Sep 19 13:09:29 2001
From: he@klaki.net (=?iso-8859-1?Q?Hrafnkell_Eir=EDksson?=)
Date: Wed, 19 Sep 2001 12:09:29 +0000
Subject: [Image-SIG] all I get is a white surface
In-Reply-To: <l03010d04b7ce371cc161@[153.97.92.109]>; from Aureli.Soria_Frisch@ipk.fhg.de on Wed, Sep 19, 2001 at 01:57:50PM +0200
References: <20010919100257.A27928@klaki.net> <l03010d04b7ce371cc161@[153.97.92.109]>
Message-ID: <20010919120929.A1381@klaki.net>

On 2001-09-19, 13:57:50 (+0200), Aureli Soria Frisch wrote:
> I think you should declare a frame after the root:

This does not help. The viewer.py example that comes with PIL behaves
as well as I am describing.

Thanks
  Hrafnkell


From jp@solo.com  Thu Sep 27 20:00:15 2001
From: jp@solo.com (jp hebert)
Date: Thu, 27 Sep 2001 12:00:15 -0700 (PDT)
Subject: [Image-SIG] PIL on macosX
Message-ID: <20010927190015.47829.qmail@web20302.mail.yahoo.com>


I compiled python and PIL o macosX using Apple's
development tools. python works  all right, but when I
import PIL I get this:

>>> from Image import *
dyld: python multiple definitions of symbol _heap_free
/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/CoreGraphics(product_link.o)
definition of _heap_free
/usr/local/lib/python2.2/site-packages/PIL/_imaging.so
definition of _heap_free

and then python aborts. how could I fix this?

thanks



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From fredrik@pythonware.com  Thu Sep 27 20:44:08 2001
From: fredrik@pythonware.com (Fredrik Lundh)
Date: Thu, 27 Sep 2001 21:44:08 +0200
Subject: [Image-SIG] PIL on macosX
References: <20010927190015.47829.qmail@web20302.mail.yahoo.com>
Message-ID: <00ca01c1478c$c8eaa920$b3fa42d5@hagrid>

jp hebert wrote:

> I compiled python and PIL o macosX using Apple's
> development tools. python works  all right, but when I
> import PIL I get this:
>
> >>> from Image import *
> dyld: python multiple definitions of symbol _heap_free
>
/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/CoreGraphics(produc
t_link.o)
> definition of _heap_free
> /usr/local/lib/python2.2/site-packages/PIL/_imaging.so
> definition of _heap_free
>
> and then python aborts. how could I fix this?

"grep heap_free" would have told you that there's a
function with that name in libImaging/QuantHeap.c,
which is used twice in libImaging/Quant.c.

try renaming that function before rebuilding.

</F>



From klintprice@cc.usu.edu  Sat Sep 29 01:21:30 2001
From: klintprice@cc.usu.edu (Klint Price)
Date: Fri, 28 Sep 2001 18:21:30 -0600
Subject: [Image-SIG] PIL.Image and binary data in SQL
Message-ID: <000a01c1487c$afd59800$0b010c0a@ingeo.com>

This is a multi-part message in MIME format.

------=_NextPart_000_0007_01C1484A.64F656D0
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

Does anyone know how use the PIL.Image to read binary image data from a =
database, create thumbnails, and out put the thumbnails to the browser =
using a binarywrite, or something to that effect?  Using IIS5, MSSQL 7, =
and ASP.

- Klint

------=_NextPart_000_0007_01C1484A.64F656D0
Content-Type: text/html;
	charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 5.50.4807.2300" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Does anyone know how use the PIL.Image =
to read=20
binary image data from a database, create thumbnails, and out put the =
thumbnails=20
to the browser using a binarywrite, or something to that effect?&nbsp; =
Using=20
IIS5, MSSQL 7, and ASP.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>- Klint</FONT></DIV></BODY></HTML>

------=_NextPart_000_0007_01C1484A.64F656D0--



From scott.rifkin@yale.edu  Sun Sep 30 21:43:35 2001
From: scott.rifkin@yale.edu (Scott Rifkin)
Date: Sun, 30 Sep 2001 16:43:35 -0400 (EDT)
Subject: [Image-SIG] 16-bit tiff images
Message-ID: <Pine.GSO.4.32.0109301641430.16819-100000@minerva.its.yale.edu>

I am looking for a plug-in to the python imaging library which will enable
me to deal with 16-bit greyscale tiff images.  Could anyone suggest where
one might be found or how to modify the existing TIFF plug-in to handle
them?

Thanks much,
Scott Rifkin
scott.rifkin@yale.edu