From cpu.crazy at gmail.com  Sat Jul  2 04:38:45 2005
From: cpu.crazy at gmail.com (Joseph Quigley)
Date: Fri, 1 Jul 2005 20:38:45 -0600
Subject: [Image-SIG] Something other than .show()
Message-ID: <66ca60fc05070119384b7933fd@mail.gmail.com>

What else can I use besides .show() to display the image? I don't mind
xv but on Windows it takes forever to load the picture. Is there an
alternative? I found the PIL handbook but I can't find anything other
than .show()
Thanks,
 Joe

From Chris.Barker at noaa.gov  Sat Jul  2 08:03:04 2005
From: Chris.Barker at noaa.gov (Chris Barker)
Date: Fri, 01 Jul 2005 23:03:04 -0700
Subject: [Image-SIG] Something other than .show()
In-Reply-To: <66ca60fc05070119384b7933fd@mail.gmail.com>
References: <66ca60fc05070119384b7933fd@mail.gmail.com>
Message-ID: <42C62E18.8090006@noaa.gov>

Joseph Quigley wrote:
> What else can I use besides .show() to display the image? 

PIL can be used with any number of the various GUI toolkits available 
for Python. Here's some info about using it with wxPython:

http://wiki.wxpython.org/index.cgi/WorkingWithImages

It would be pretty quick to whip up an alternative to show() with 
wxPython and probably any of the other major toolkits. (GTK, QT, etc.)

-Chris


-- 
Christopher Barker, Ph.D.
Oceanographer
                                      		
NOAA/OR&R/HAZMAT         (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 kevin at cazabon.com  Sat Jul  2 10:31:49 2005
From: kevin at cazabon.com (kevin@cazabon.com)
Date: Sat, 2 Jul 2005 10:31:49 +0200
Subject: [Image-SIG] Something other than .show()
References: <66ca60fc05070119384b7933fd@mail.gmail.com>
Message-ID: <001101c57ee0$8d1ed7b0$640aa8c0@duallie>

You can write your own Tkinter widget pretty easily...

(untested pseudocode)

--------------
import Image, ImageTk, Tkinter

def show2(imgFile):
    im = Image.open(imgFile)
    window = Tkinter.Tk()
    window.tkIm = ImageTk.PhotoImage(im)
    window.label = Tkinter.Label(window, image=window.tkIm)
    window.label.pack()
    return window

x = show2("c:\\temp\test.tif")
x.mainloop()
---------------------

(I make the label and tkIm as attributes of the window class, so that a
reference is held... otherwise garbage collection makes them go away)

Kevin.

----- Original Message ----- 
From: "Joseph Quigley" <cpu.crazy at gmail.com>
To: <image-sig at python.org>
Sent: Saturday, July 02, 2005 4:38 AM
Subject: [Image-SIG] Something other than .show()


> What else can I use besides .show() to display the image? I don't mind
> xv but on Windows it takes forever to load the picture. Is there an
> alternative? I found the PIL handbook but I can't find anything other
> than .show()
> Thanks,
>  Joe
> _______________________________________________
> Image-SIG maillist  -  Image-SIG at python.org
> http://mail.python.org/mailman/listinfo/image-sig
>
>
>



From cpu.crazy at gmail.com  Sat Jul  2 18:24:11 2005
From: cpu.crazy at gmail.com (Joseph Quigley)
Date: Sat, 2 Jul 2005 10:24:11 -0600
Subject: [Image-SIG] Something other than .show()
In-Reply-To: <42C62E18.8090006@noaa.gov>
References: <66ca60fc05070119384b7933fd@mail.gmail.com>
	<42C62E18.8090006@noaa.gov>
Message-ID: <66ca60fc05070209245b867a66@mail.gmail.com>

Thanks guys. This helps. I'll try the Tk version (I'm having problems
installing wxPython on Linux right now.

You say I should look at the enhancer.py in the scripts folder?

I'll try the pseudocode you wrote. I have minimal experience with GUI
(i started python in Feb. this year) but I have An Introduction to
Tkinter by Fredik Lundh.

Thanks again.
Joe


On 7/2/05, Chris Barker <Chris.Barker at noaa.gov> wrote:
> Joseph Quigley wrote:
> > What else can I use besides .show() to display the image?
> 
> PIL can be used with any number of the various GUI toolkits available
> for Python. Here's some info about using it with wxPython:
> 
> http://wiki.wxpython.org/index.cgi/WorkingWithImages
> 
> It would be pretty quick to whip up an alternative to show() with
> wxPython and probably any of the other major toolkits. (GTK, QT, etc.)
> 
> -Chris
> 
> 
> --
> Christopher Barker, Ph.D.
> Oceanographer
> 
> NOAA/OR&R/HAZMAT         (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 christianj at implicitnetworks.com  Sat Jul  2 18:58:13 2005
From: christianj at implicitnetworks.com (Christian M. Jensen)
Date: Sat, 2 Jul 2005 09:58:13 -0700
Subject: [Image-SIG] GUI with Transparency
Message-ID: <326A1C8DE34E8E4189BE602CE79167840949DE@corporate.implicit.implicitnetworks.com>

Hello,

Does anyone know of a GUI toolkit that supports alpha blending using PNGs?

Thanks!
Christian

From cpu.crazy at gmail.com  Sat Jul  2 21:32:28 2005
From: cpu.crazy at gmail.com (Joseph Quigley)
Date: Sat, 2 Jul 2005 13:32:28 -0600
Subject: [Image-SIG] Something other than .show()
In-Reply-To: <42C62E18.8090006@noaa.gov>
References: <66ca60fc05070119384b7933fd@mail.gmail.com>
	<42C62E18.8090006@noaa.gov>
Message-ID: <66ca60fc050702123275bc5298@mail.gmail.com>

Thanks! You guys made this possible (well, a fast quick image loading possible).
Here's my source code (the program's not finished but this works great):

import Image
import imghdr
import ImageTk
import os
import Tkinter

print "\n" * 100
print "Jimage Reader 1.0\n"

def imgshow(file):
    im = Image.open(file)
    window = Tkinter.Tk()
    window.tkIm = ImageTk.PhotoImage(im)
    window.label = Tkinter.Label(window, image=window.tkIm)
    window.label.pack()
    window.info = Tkinter.Label(window, text="Jimage Reader 1.0
Displaying: " + os.getcwd() + os.sep + open.img_name)
    window.info.pack()
    window.mainloop()

def help():
    while True:
        ask = raw_input("Help>> ")
# Displaying and image        
        if "show" in ask:
            print """\nHow to display the picture.
To display the picture, type 'dsp' (without the quotes) at the console.\n"""
        elif "display" in ask:
            print """\nHow to display the picture.
To display the picture, type 'dsp' (without the quotes) at the console.\n"""
        elif "open" in ask:
            print """\nHow to display the picture.
To display the picture, type 'dsp' (without the quotes) at the console.\n"""
        elif "see" in ask:
            print """\nHow to display the picture.
To display the picture, type 'dsp' (without the quotes) at the console.\n"""

# Rotating an image.
        elif "flip" in ask:
            print """\nHow to rotate an image.
Type 'rotate' (without the quotes) at the console.\n"""
        elif "rotate" in ask:
            print """\nHow to rotate an image.
Type 'rotate' (without the quotes) at the console.\n"""

        elif "sideways" in ask:
            print """\nHow to rotate an image.
Type 'rotate' (without the quotes) at the console.\n"""

        elif "upside down" in ask:
            print """\nHow to rotate an image.
Type 'rotate' (without the quotes) at the console.\n"""

        elif ask == "back()":
            print "\n" * 100
            break

# Other stuff not found
        else:
            print "No help for your topic (%s) was found." % (ask)
            
            
def quit():
    raise SystemExit

def save():
    filename = raw_input("File name to save: ")
    if ".gif" or ".GIF" in filename:
        open.im.save(filename, "GIF")
    elif ".jpg" or ".jpeg" or ".JPG" or ".JPEG" in filename:
          open.im.save(filename, "JPEG")

class open:
    while True:
        img_name = raw_input("\nImage name (including extention): ")
        try:
            img_name
        except KeyboardInterrupt:
            quit()
        except TypeError:
            quit()

        try:
            im = Image.open(img_name)
        except IOError:
            print "\nFile not found. Try again."
            continue
        print "\nFile loaded sucessfully.\n"
        break

while True:
    m_m = raw_input("Jimage Console. Type 'h' for help.\n> ")
    try:
        m_m
    except KeyboardInterrupt:
        raise SystemExit
    if m_m == "help":
        help()
    elif m_m == "dsp":
        imgshow(open.img_name)        
    elif m_m == "rotate":
        while True:
            try:
                angle = int(raw_input("\nRotate by: "))
            except ValueError:
                print "Only digits are accepted. Eg: 180 instead of
one hundred eighty."
                continue
            if ".gif" or ".GIF" in filename:
                    open.im.rotate(angle).save("tmp", "GIF")
            elif ".jpg" or ".jpeg" or ".JPG" or ".JPEG" in filename:
                    open.im.rotate(angle).save("tmp", "JPEG")
            imgshow("tmp")
            
            ok = raw_input("Is this ok? (Y/N): ")
            if ((ok == "Y") or ("y" == ok)):
                break
            else:
                continue
        while True:
            save = raw_input("Save? (Y/N): ")
            if ((save == "n") or ("N" == save)):
                break
            else:
                filename = raw_input("File name to save: ")
                if ".gif" or ".GIF" in filename:
                    open.im.rotate(angle).save(filename, "GIF")
                elif ".jpg" or ".jpeg" or ".JPG" or ".JPEG" in filename:
                      open.im.rotate(angle).save(filename, "JPEG")
            print "\n\n"
            break
    elif m_m == "open":
        while True:
            open.img_name = raw_input("\nImage name (including extention): ")
            try:
                open.img_name
            except KeyboardInterrupt:
                quit()
            except TypeError:
                quit()
    
            try:
                open.im = Image.open(open.img_name)
            except IOError:
                print "\nFile not found. Try again."
                continue
            print "\nFile loaded sucessfully.\n"
            break
            imgshow(open.img_name)
    elif m_m == "exit":
        quit()   

Thanks again,

Joe

From gwidion at mpc.com.br  Sun Jul  3 03:48:13 2005
From: gwidion at mpc.com.br (Joao S. O. Bueno Calligaris)
Date: Sat, 2 Jul 2005 22:48:13 -0300
Subject: [Image-SIG] Something other than .show()
In-Reply-To: <66ca60fc05070119384b7933fd@mail.gmail.com>
References: <66ca60fc05070119384b7933fd@mail.gmail.com>
Message-ID: <200507022248.13419.gwidion@mpc.com.br>

On Friday 01 July 2005 23:38, Joseph Quigley wrote:
> What else can I use besides .show() to display the image? I don't
> mind xv but on Windows it takes forever to load the picture. Is
> there an alternative? I found the PIL handbook but I can't find
> anything other than .show()
> Thanks,
>  Joe


Hi!
PIL cannot do it by itself.

However, Tkitner is largely distributed with Python - and is instaled 
by default in python for windows. 

So it is reasonably safe to create a Tkinter instance to display the 
image - even if your program uses another toolkit, the load should be 
less then xv. 

This was something I was wanting as well, so I crafted a small 
function which loads the needed modules and displays a new image. It 
can also work as a standallone lightweight "xv".

Enjoy!!

	JS
	-><-
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From Chris.Barker at noaa.gov  Sun Jul  3 07:12:30 2005
From: Chris.Barker at noaa.gov (Chris Barker)
Date: Sat, 02 Jul 2005 22:12:30 -0700
Subject: [Image-SIG] GUI with Transparency
In-Reply-To: <326A1C8DE34E8E4189BE602CE79167840949DE@corporate.implicit.implicitnetworks.com>
References: <326A1C8DE34E8E4189BE602CE79167840949DE@corporate.implicit.implicitnetworks.com>
Message-ID: <42C773BE.8010608@noaa.gov>

Christian M. Jensen wrote:

> Does anyone know of a GUI toolkit that supports alpha blending using PNGs?

What is it you want to do with them? wxPython can load and display PNGs 
with alpha, but there is no way to create them with wxPython, and I 
don't know if you can put them on top of each other.

-Chris





-- 
Christopher Barker, Ph.D.
Oceanographer
                                      		
NOAA/OR&R/HAZMAT         (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 mattnuzum at gmail.com  Sun Jul  3 15:57:41 2005
From: mattnuzum at gmail.com (Matthew Nuzum)
Date: Sun, 3 Jul 2005 08:57:41 -0500
Subject: [Image-SIG] GUI with Transparency
In-Reply-To: <326A1C8DE34E8E4189BE602CE79167840949DE@corporate.implicit.implicitnetworks.com>
References: <326A1C8DE34E8E4189BE602CE79167840949DE@corporate.implicit.implicitnetworks.com>
Message-ID: <f3c0b4080507030657535cd0c2@mail.gmail.com>

On 7/2/05, Christian M. Jensen <christianj at implicitnetworks.com> wrote:
> Hello,
> 
> Does anyone know of a GUI toolkit that supports alpha blending using PNGs?
> 
> Thanks!
> Christian

Here is a snippet from a program that uses PIL to create a rectangle
with alpha-transparent drop shadow around it. (tmp is an image)

import Image
import ImageFilter
import ImageChops
import sys

# draw a filled rectangle on a white background that leaves 8 - 10 px of white
# around the outside edge of the rectangle
... 

# add the drop shadow
new = tmp.filter(ImageFilter.BLUR)

new = new.convert("RGBA")

c = new.convert("L")
c = ImageChops.invert(c)
bands = c.split()

new.putalpha(bands[0])
new.show()

-- 
Matthew Nuzum
www.bearfruit.org

From 550283447739-0001 at t-online.de  Tue Jul  5 23:56:06 2005
From: 550283447739-0001 at t-online.de (Oliver Albrecht)
Date: Tue, 05 Jul 2005 23:56:06 +0200
Subject: [Image-SIG] GIF transparency
Message-ID: <42CB01F6.6080402@t-online.de>

Hallo folks,
I have tried to save a GIF containing transparent pixel in different
attempts and had no success(and some other from my forum), since I could 
not figure
out the right options for the save.
Is there any option ensuring transparent pixel to be saved as
transparent or is there any other way to ship around this edge?
To overcome the transparency problem I have inspected the code of your
GifImagePlugin. By fortuity I found that transparent pixel will be
saved right, if I will change line 268 of the Plugin
(> transparency = im.encoderinfo["transparency"])
  to
> transparency = im.info["transparency"]
Will this solution work in any case?

I used PIL 1.1.5 (win32)

-- 
<!-Olli-?/>

From alex at tweedly.net  Wed Jul  6 02:02:53 2005
From: alex at tweedly.net (Alex Tweedly)
Date: Wed, 06 Jul 2005 01:02:53 +0100
Subject: [Image-SIG] Having trouble with raw encoder.
Message-ID: <42CB1FAD.9070604@tweedly.net>


I receive data from an external source, 4 bytes per pixel, as 
<0><r><g><b> and I want to, amongst other things, save it as a jpg file.

I'm having trouble getting this to work properly. I thought it should be 
simple - but it doesn't seem to be, so I guess I'm misunderstanding 
something. I reproduced the problem in a small sample function 
independent of my data source:

> def handle(filename):
>     orig = Image.open(filename)
>     print orig.format, orig.size, orig.mode
>     xrgbstring = orig.tostring('raw', "XRGB")
>     print  "length of xrgbstring", len(xrgbstring), [ord(x) for x in 
> xrgbstring[:20]]
>     t2 = Image.fromstring("RGB", orig.size, xrgbstring, 'raw', "XRGB")
>     t2.save("t2.jpg")

The second print statement confirms for me that I have got this data 
into the same format as I need to deal with - and I expected the 
following 'fromstring' to give me the correct result. But once saved, 
"t2.jpg" looks all wrong - looks like  4 ghostly copies of the original.

I did notice that in unpack.c, the entry for XRGB says

>     {"RGB",    "XRGB",        24,    ImagingUnpackXRGB},

and wondered why "24" bits - seemed like it should be 32 - but I know 
I'm well out of my depth here, and it's time to ask for help.

Any ideas or suggestions ?
Thanks,

-- 
Alex Tweedly       http://www.tweedly.net



-- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.323 / Virus Database: 267.8.8/37 - Release Date: 01/07/2005


From sizk at sizk.net  Wed Jul  6 11:46:02 2005
From: sizk at sizk.net (sizk@sizk.net)
Date: Wed, 6 Jul 2005 11:46:02 +0200
Subject: [Image-SIG] Mail System Error - Returned Mail
Message-ID: <20050706094602.123C61E4012@bag.python.org>

Dear user of python.org,

Your e-mail account was used to send a large amount of junk e-mail messages during this week.
Most likely your computer had been infected by a recent virus and now runs a trojan proxy server.

We recommend you to follow our instruction in order to keep your computer safe.

Virtually yours,
The python.org team.

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From listmaster at ittoolbox.com  Thu Jul  7 23:05:06 2005
From: listmaster at ittoolbox.com (listmaster@ittoolbox.com)
Date: Thu,  7 Jul 2005 23:05:06 +0200 (CEST)
Subject: [Image-SIG] sap-r3-log@openitx.com
Message-ID: <20050707210506.0F16B1E4004@bag.python.org>

Dear ITtoolbox Subscriber,

Per the changes noted below, your message has NOT been distributed to the SAP-R3-Log group. Instead, you will need to resubmit it to the appropriate individual SAP-R3-Log topic.

THE FOLLOWING IMPORTANT CHANGES WILL BE IN EFFECT STARTING WEDNESDAY,
MARCH 5, 2003. PLEASE NOTE THAT THESE CHANGES WILL AFFECT HOW YOU SEND MESSAGES TO THE SAP-R3-LOG DISCUSSION GROUP.

ITtoolbox has launched seven new discussion topics, each focusing on specific SAP Logistics modules.  Please read this entire message carefully to understand how this will impact your SAP-R3-Log subscription.

Each SAP Logistics topic now has a unique e-mail address.  In order to target your message to the appropriate audience, you must send it to one or more of the appropriate addresses below.

SAP-R3-LOG-MM at Groups.ITtoolbox.com--Materials Management
SAP-R3-LOG-PM at Groups.ITtoolbox.com--Plant Maintenance
SAP-R3-LOG-PP at Groups.ITtoolbox.com--Production Planning / Production Processing
SAP-R3-LOG-PS at Groups.ITtoolbox.com--Project Systems
SAP-R3-LOG-QM at Groups.ITtoolbox.com--Quality Management
SAP-R3-LOG-SD at Groups.ITtoolbox.com--Sales and Distribution
SAP-R3-LOG-WM at Groups.ITtoolbox.com--Warehouse Management

As a member of the SAP-R3-Log group, you are automatically subscribed to the new topics and can begin to send and receive messages for the topics. Instead of addressing messages to SAP-R3-Log at Groups.ITtoolbox.com, you must now send messages to the individual SAP Logistics groups. 

Please read the FAQs below for more information.

1) How do I send a message to the new SAP-R3-Log discussion topics?

>From the list above, choose the most relevant topic based on the subject of your message. For example, if your message is relevant to Materials Management, it should be addressed to SAP-R3-LOG-MM at Groups.ITtoolbox.com. 

2) What if I want my message to go to more than one topic?

Simply address your message to as many SAP-R3-Log topics as are relevant to the subject of your message. Technology used by ITtoolbox will make sure each user only gets your message one time, even if they are subscribed to multiple groups.

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The SAP-R3-Log e-mail address has changed. There is no longer one SAP-R3-Log e-mail address. Instead, each SAP-R3-Log topic has its own e-mail address. You will receive messages from each address corresponding to the new SAP-R3-Log topics.

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You may, at any point, choose to unsubscribe from specific SAP-R3-Log topics. For example, if you wanted to unsubscribe from the SAP-R3-LOG-PP topic, you would send your unsubscribe request to LEAVE-SAP-R3-LOG-PP at Groups.ITtoolbox.com. You must individually unsubscribe from each topic.

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From nop at nop.com  Tue Jul 12 03:05:29 2005
From: nop at nop.com (nop@nop.com)
Date: Tue, 12 Jul 2005 08:05:29 +0700
Subject: [Image-SIG] DELIVERY REPORTS ABOUT YOUR E-MAIL
Message-ID: <20050712010637.1FCDF1E4003@bag.python.org>

This message was not delivered due to the following reason:

Your message could not be delivered because the destination server was
not reachable within the allowed queue period. The amount of time
a message is queued before it is returned depends on local configura-
tion parameters.

Most likely there is a network problem that prevented delivery, but
it is also possible that the computer is turned off, or does not
have a mail system running right now.

Your message was not delivered within 1 days:
Mail server 67.61.55.40 is not responding.

The following recipients did not receive this message:
<image-sig at python.org>

Please reply to postmaster at nop.com
if you feel this message to be in error.

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From Thomas.Holm at telecanetworks.se  Tue Jul 12 17:27:57 2005
From: Thomas.Holm at telecanetworks.se (Thomas Holm)
Date: Tue, 12 Jul 2005 17:27:57 +0200
Subject: [Image-SIG] =?iso-8859-1?q?Fr=E5nvaro=2C_autosvar=3A?=
Message-ID: <48DC9DFAD1A2824AB9F068EE9A7A18808557EF@mailman.osd.telecanetworks.se>

On vacation, back on Monday 8/8 2005.

From olauret at yahoo.fr  Tue Jul 12 20:43:21 2005
From: olauret at yahoo.fr (Olivier)
Date: Tue, 12 Jul 2005 19:43:21 +0100
Subject: [Image-SIG] ImportError: No module named image
Message-ID: <200507121943.23299.olauret@yahoo.fr>

Hello,

I would like to do a test to see if the installation of my PIL library is 
correct. When I do, in a idle window, a:
	Import image
I get the following error:
	ImportError: No module named image

I get the same with the command:
	import PIL

Any idea of what this could be? couldn't find anything on Internet :(

What I already checked:
	1. The install of PIL was successfull all the way long. I followed the 
detailed steps of the ReadMe file and all checks were successful
	2. The PIL folder has been added to the /usr/lib/python2.4/site-packages 
directory and a PIL.pth automatically has been created with PIL written into 
it.
	3. Restart the computer didn't help
	4. The PIL directory has the 755 permissions.
	5. "Import sys" is working fine.

My system:

	Python 2.4.1 (#1, Jul  9 2005, 17:11:17) 
	[GCC 3.4.1 (Mandrakelinux 10.1 3.4.1-4mdk)] on linux2
	PIL (Imaging-1.1.5) from the official website.

	History in the installation of Python: Python 2.3 was already installed. I 
installed Python 2.4 from the source into the default directory (/usr/local), 
but this wasn't where exactly I wanted it to be installed. Installed again 
Python 2.4 in (/usr). I didn't delete any Python installation folder. 
Installation when without any error.
Installation of PIL was in the correct directory. The "import image" failed.
Renaming the /usr/local/bin/python2.4 (wrong python installation directory) 
didn't change anything.

	

	
		
___________________________________________________________________________ 
Appel audio GRATUIT partout dans le monde avec le nouveau Yahoo! Messenger 
Téléchargez cette version sur http://fr.messenger.yahoo.com

From gwidion at mpc.com.br  Tue Jul 12 20:53:02 2005
From: gwidion at mpc.com.br (Joao S. O. Bueno Calligaris)
Date: Tue, 12 Jul 2005 15:53:02 -0300
Subject: [Image-SIG] ImportError: No module named image
In-Reply-To: <200507121943.23299.olauret@yahoo.fr>
References: <200507121943.23299.olauret@yahoo.fr>
Message-ID: <200507121553.02366.gwidion@mpc.com.br>

Have you tried
import Image 
instead of 
import image  ?  

Beware of capitalization - it is very important in GNU/Linux and 
Python - I saw you even wrote "Import" in your e-mail.

On Tuesday 12 July 2005 15:43, Olivier wrote:

From bob at redivi.com  Tue Jul 12 22:48:19 2005
From: bob at redivi.com (Bob Ippolito)
Date: Tue, 12 Jul 2005 10:48:19 -1000
Subject: [Image-SIG] ImportError: No module named image
In-Reply-To: <200507121553.02366.gwidion@mpc.com.br>
References: <200507121943.23299.olauret@yahoo.fr>
	<200507121553.02366.gwidion@mpc.com.br>
Message-ID: <9F21107E-B3DC-4DD0-99C5-2BEFB53A99AE@redivi.com>


On Jul 12, 2005, at 8:53 AM, Joao S. O. Bueno Calligaris wrote:

> Have you tried
> import Image
> instead of
> import image  ?
>
> Beware of capitalization - it is very important in GNU/Linux and
> Python - I saw you even wrote "Import" in your e-mail.

It's very important everywhere (except for DOS I guess, but that's  
not an officially supported platform).  Python will only import  
something if the case matches, whether or not the filesystem is case  
insensitive, because there might be an exact match in one of the  
other places it's going to look.

-bob


From jepler at unpythonic.net  Mon Jul 18 19:02:15 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Mon, 18 Jul 2005 12:02:15 -0500
Subject: [Image-SIG] Image orientation and color information with PIL?
In-Reply-To: <1121705037.667860.241980@g47g2000cwa.googlegroups.com>
References: <1121705037.667860.241980@g47g2000cwa.googlegroups.com>
Message-ID: <20050718170215.GG2199@unpythonic.net>

>>> i = Image.open("blue.jpg")
>>> i.size
(3008, 2000)
>>> i.mode
'RGB'

'RGB' is the value for color jpeg images.  I believe that for black&white
images, i.mode is 'L' (luminosity).

If you want to determine whether an existing image is landscape or portrait,
then just compare i.size[0] (width) and i.size[1] (height).

If by "determine if an image is horizontal/vertical", you want to find
the orientation data recorded by some digital cameras, you can do that
with PIL 1.1.4.  According to the release notes for 1.1.4,
    + Added experimental EXIF support for JPEG files.  To extract EXIF
      information from a JPEG file, open the file as usual, and call the
      "_getexif" method.  If successful, this method returns a dictionary
      mapping EXIF TIFF tags to values.  If the file does not contain EXIF
      data, the "_getexif" method returns None.

      The "ExifTags" module contains a dictionary mapping tags to tag
      names.

      This interface will most likely change in future versions.

The exif tag 274 is Orientation.  The values you'll see most often are 1
(Normal), 6 and 8 (90 and 270 degree rotations).  Orientation can also encode
180 degree rotation, as well as any of the four rotations combined with a
mirror operation.

>>> [k for (k,v) in ExifTags.TAGS.items() if v == 'Orientation']
[274]
>>> e = i._getexif()
>>> if e: print e[274]
1

I have written a standalone Python module that reads and changes the EXIF orientation data.  You can view it here:
    http://unpy.net/cgi-bin/viewcvs.cgi/aethertool/disorient.py?rev=1.2&content-type=text/vnd.viewcvs-markup
It is available under the terms of the GNU GPL.

Here's another page about EXIF orientation data:
    http://sylvana.net/jpegcrop/exif_orientation.html

Jeff
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From christianj at implicitnetworks.com  Mon Jul 18 23:13:15 2005
From: christianj at implicitnetworks.com (Christian M. Jensen)
Date: Mon, 18 Jul 2005 14:13:15 -0700
Subject: [Image-SIG] Best Method to Dither a Grayscale image
Message-ID: <326A1C8DE34E8E4189BE602CE7916784094D03@corporate.implicit.implicitnetworks.com>

I would like to convert a 256 level image down to 32 or 64 levels using
the best dithering possible for visual niceness.

Am I better off using im.convert() or im.quantize()?

I have tried upsampling to an RGB image then using a prebuilt 32 gray
palette to downsample to 32 colors but it is not dithering using the
given palette. It appears to be using an adaptive palette or something.

Anyone have any input?

import Image
import ImagePalette

from math import *

def createGray(x):
    values = int(pow(2,x))
    out = []
    for i in range(256):
        k = int(round((i/255.0)*values)/float(values)*255)
        out.append(k)
        out.append(k)
        out.append(k)
    return out

def doDither(im, x):
    data = createGray(x)
    p = ImagePalette.ImagePalette("RGB", data)
    pimage = Image.new("P", (10, 10))
    pimage.putpalette(data)
    im = im.convert(mode="RGB")
    im = im.convert(mode="P", palette=pimage)
    im = im.convert(mode="L")
    return im
    
im = Image.open("input.png")
bands = im.split()

RO = doDither(bands[0], 5)
GO = doDither(bands[1], 6)
BO = doDither(bands[2], 5)

outbands = [RO, GO, BO, bands[3]]
outimage = Image.merge("RGBA", outbands)
outimage.save("output.png")


From christianj at implicitnetworks.com  Tue Jul 19 00:38:02 2005
From: christianj at implicitnetworks.com (Christian M. Jensen)
Date: Mon, 18 Jul 2005 15:38:02 -0700
Subject: [Image-SIG] Best Method to Dither a Grayscale image
Message-ID: <326A1C8DE34E8E4189BE602CE7916784094D0E@corporate.implicit.implicitnetworks.com>

I forgot to mention - the input image is a PNG with alpha channel. I am
down sampling a 32 bit image into 16 bit color using a 565RGB bit order.
Each band ends up looking like an 8bit grayscale image after splitting.

-----Original Message-----
From: image-sig-bounces at python.org [mailto:image-sig-bounces at python.org]
On Behalf Of Christian M. Jensen
Sent: Monday, July 18, 2005 2:13 PM
To: image-sig at python.org
Subject: [Image-SIG] Best Method to Dither a Grayscale image

I would like to convert a 256 level image down to 32 or 64 levels using
the best dithering possible for visual niceness.

Am I better off using im.convert() or im.quantize()?

I have tried upsampling to an RGB image then using a prebuilt 32 gray
palette to downsample to 32 colors but it is not dithering using the
given palette. It appears to be using an adaptive palette or something.

Anyone have any input?

import Image
import ImagePalette

from math import *

def createGray(x):
    values = int(pow(2,x))
    out = []
    for i in range(256):
        k = int(round((i/255.0)*values)/float(values)*255)
        out.append(k)
        out.append(k)
        out.append(k)
    return out

def doDither(im, x):
    data = createGray(x)
    p = ImagePalette.ImagePalette("RGB", data)
    pimage = Image.new("P", (10, 10))
    pimage.putpalette(data)
    im = im.convert(mode="RGB")
    im = im.convert(mode="P", palette=pimage)
    im = im.convert(mode="L")
    return im
    
im = Image.open("input.png")
bands = im.split()

RO = doDither(bands[0], 5)
GO = doDither(bands[1], 6)
BO = doDither(bands[2], 5)

outbands = [RO, GO, BO, bands[3]]
outimage = Image.merge("RGBA", outbands)
outimage.save("output.png")

_______________________________________________
Image-SIG maillist  -  Image-SIG at python.org
http://mail.python.org/mailman/listinfo/image-sig

From lists at johnsto.co.uk  Wed Jul 20 21:49:15 2005
From: lists at johnsto.co.uk (Dave Johnston)
Date: Wed, 20 Jul 2005 20:49:15 +0100
Subject: [Image-SIG] ImageDraw.ellipse bug
Message-ID: <42DEAABB.8000902@johnsto.co.uk>

ImageDraw.ellipse appears to have a bug in it from the inaccuracy of the 
code that leads to it drawing ellipses 1 pixel bigger than the specified 
bounding box.

The bug is that ellipses of even-width end up being a pixel wider. For 
example, ellipses draw with bounding boxes of 1x1, 2x2, 3x3, 4x4, 5x5 
are actually drawn using these bounding boxes: 1x1, 3x2, 3x3, 5x4, 5x5.

I don't know if this pattern continues for ever, but the inaccuracy has 
been causing precision errors in generated images and ruining the 
algorithms I've been working on.

Maybe there's a chance that the Bresenham algorithm could be added to 
the library for drawing circles?

Ta,
Dave



From arielle at taronga.com  Thu Jul 21 13:13:45 2005
From: arielle at taronga.com (Stephanie da Silva)
Date: Thu, 21 Jul 2005 06:13:45 -0500 (CDT)
Subject: [Image-SIG] Returned mail: Data format error
In-Reply-To: <42A58B7D00A62C91@ms003msg.mail.fw> (added by
	postmaster@fastwebnet.it)
References: <42A58B7D00A62C91@ms003msg.mail.fw> (added by
	postmaster@fastwebnet.it)
Message-ID: <20050721111345.B2794413D1@citadel.in.taronga.com>

To send mail to me, you need to add [laundry] to the end of the
subject line (eg: Subject: Random message [laundry]).

From mattnuzum at gmail.com  Thu Jul 21 18:02:02 2005
From: mattnuzum at gmail.com (Matthew Nuzum)
Date: Thu, 21 Jul 2005 11:02:02 -0500
Subject: [Image-SIG] removing dots
Message-ID: <f3c0b4080507210902e672527@mail.gmail.com>

I'm considering writting a program to "clean up" images. My images
have a number of black "dots" all over them. cf:
http://newz.gotdns.com/pcb3.gif

The pictures are two color black and white (gif format). The dots are
(in this case) about 4x6 px and are evenly spaced. Note that there are
thin lines that need to be preserved.

Am I venturing into a big project, or is this something that should be
rather straigthtforward and simple?

Advise appreciated,
-- 
Matthew Nuzum
www.bearfruit.org

From amery at geeks.cl  Thu Jul 21 18:25:14 2005
From: amery at geeks.cl (Alejandro Mery)
Date: Thu, 21 Jul 2005 12:25:14 -0400
Subject: [Image-SIG] PIL 1.1.5, Imaging.h and skencil
Message-ID: <42DFCC6A.4030107@geeks.cl>

hi, i just installed PIL 1.1.5 and i noticed it only installed .py files 
(and bin/), what happened to Imaging.h which is needed by skencil?

regards,
Alejandro Mery


From jepler at unpythonic.net  Thu Jul 21 20:03:16 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Thu, 21 Jul 2005 13:03:16 -0500
Subject: [Image-SIG] removing dots
In-Reply-To: <f3c0b4080507210902e672527@mail.gmail.com>
References: <f3c0b4080507210902e672527@mail.gmail.com>
Message-ID: <20050721180312.GB11787@unpythonic.net>

Assuming you can write a loop that "visits" each dot (not hard if
they're evenly spaced and the upper-leftmost dot is fixed in position,
but harder if that's not true), here's the kind of heuristic I'd try
using at each dot:

    For each row and column, count how "open" it is.  For each white
    pixel above or below a column, or each pixel left or right of a row,
    it gets one additional "open" count.  These counts range from 0 to
    2.

    A pixel's "open" count is the sum of its row open count and its
    column open count.  The counts range from 0 to 4.

    A pixel is removable if it is "3-open" or "4-open".


I think this will do the right thing when a dot impacts a vertical or
horizontal trace, but I'm less confident in the case that it impacts a
diagonal trace or a pad.

I don't know what software generates these files you have, but here's
another idea:  if you can change the grid pitch, generate several images
with different pitches, then the pixels you want to turn white are the
ones that are white in one of the different pictures.

Jeff
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From lista4x4-owner at lista4x4.cl  Fri Jul 22 16:07:56 2005
From: lista4x4-owner at lista4x4.cl (lista4x4-owner@lista4x4.cl)
Date: Fri, 22 Jul 2005 10:07:56 -0400
Subject: [Image-SIG] =?iso-8859-1?q?=7BSpam=3F=7D_=7BFilename=3F=7D_Mail_S?=
 =?iso-8859-1?q?ystem_Error_-_Returned_Mail?=
Message-ID: <mailman.443.1122041276.2291.lista4x4@lista4x4.cl>

No est? autorizado a enviar mensajes a esta lista de correo y su
mensaje ha sido rechazado autom?ticamente, Si piensa que sus mensajes
est?n siendo rechazados por error,
 contacte con el propietaro de la lista en lista4x4-owner at lista4x4.cl.

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From cgreek-admin at m17n.org  Mon Jul 25 09:58:47 2005
From: cgreek-admin at m17n.org (cgreek-admin@m17n.org)
Date: Mon, 25 Jul 2005 16:58:47 +0900
Subject: [Image-SIG] You image-sig@python.org are not member (cgreek ML)
References: <200507250757.j6P7uieX022899@kitt.m17n.org>
Message-ID: <200507251658.FMLAAB3538.cgreek@m17n.org>

You are not a member of this mailing list <cgreek at m17n.org>.

If you know the general guide of this list, please send mail with
the mail body 

	guide

to the address

	cgreek-ctl at m17n.org

where guide is equal to GUIDE for case insensitive.



From bbaxter at wadsworth.org  Mon Jul 25 18:04:03 2005
From: bbaxter at wadsworth.org (William Baxter)
Date: Mon, 25 Jul 2005 12:04:03 -0400
Subject: [Image-SIG] seed fill in PIL
Message-ID: <42E50D73.DBB3E3A0@wadsworth.org>

Does anyone know of a seed fill program for PIL? That is, given a seed
x,y, it paints all pixels the same color up to a threshold/boundary.

More generally, are there public collections of image processing
routines using PIL anywhere on the web?

Thanks,
Bill Baxter

From glenblank at pobox.com  Tue Jul 26 09:19:56 2005
From: glenblank at pobox.com (glenblank@pobox.com)
Date: Tue, 26 Jul 2005 09:19:56 +0200
Subject: [Image-SIG] error
Message-ID: <20050726072003.38BF01E4004@bag.python.org>

This message was undeliverable due to the following reason:

Your message could not be delivered because the destination computer was
unreachable within the allowed queue period. The amount of time
a message is queued before it is returned depends on local configura-
tion parameters.

Most likely there is a network problem that prevented delivery, but
it is also possible that the computer is turned off, or does not
have a mail system running right now.

Your message was not delivered within 5 days:
Mail server 125.20.117.224 is not responding.

The following recipients could not receive this message:
<image-sig at python.org>

Please reply to postmaster at pobox.com
if you feel this message to be in error.

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From klimek at grc.nasa.gov  Tue Jul 26 16:25:48 2005
From: klimek at grc.nasa.gov (Bob Klimek)
Date: Tue, 26 Jul 2005 10:25:48 -0400
Subject: [Image-SIG] seed fill in PIL
In-Reply-To: <42E50D73.DBB3E3A0@wadsworth.org>
References: <42E50D73.DBB3E3A0@wadsworth.org>
Message-ID: <42E647EC.3010106@grc.nasa.gov>

William Baxter wrote:

>Does anyone know of a seed fill program for PIL? That is, given a seed
>x,y, it paints all pixels the same color up to a threshold/boundary.
>  
>
See the attached zip file. It's only 11 KB long so hopefully nobody will 
complain. Look under the section labelled "Morphological functions". 
There is a function named "floodFill". Interspersed in the code are a 
few calls to "wx.wxGetApp().Yield()". Just comment those out. They are 
part of wxPython which prevent the GUI from freezing up during a 
long-running loop.

>More generally, are there public collections of image processing
>routines using PIL anywhere on the web?
>
>  
>
I'm not aware of one single location but it would be nice. Since you're 
asking, this is why I decided to attach my whole PIL imaging file 
instead just the part you need. Maybe you can find other useful goodies...

Take Care,
Bob
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From franz at trispen.com  Tue Jul 26 17:29:42 2005
From: franz at trispen.com (Franz Struwig)
Date: Tue, 26 Jul 2005 17:29:42 +0200
Subject: [Image-SIG] (no subject)
In-Reply-To: <opsq2nphaibz1klc@snuifer.trispen.com>
References: <opsq2nphaibz1klc@snuifer.trispen.com>
Message-ID: <opsui1bsfabz1klc@snuifer.trispen.com>

Greetings,

I've written a program that uses PIL and have used py2exe to create an  
executable.

When I now try to open a .png file, I get an error.  I printed out the  
contents of the ID[] array in the Image.py file, inside the open()  
function, and it was empty.

Any advice on how I can register the different formats in my exe would be  
greatly appreciated!

Thanks,
Franz

From klimek at grc.nasa.gov  Wed Jul 27 19:41:53 2005
From: klimek at grc.nasa.gov (Bob Klimek)
Date: Wed, 27 Jul 2005 13:41:53 -0400
Subject: [Image-SIG] frame averaging
Message-ID: <42E7C761.6000808@grc.nasa.gov>

Hi,

Is there a way to do frame averaging in PIL? I'm pretty sure there isn't 
a function for frame averaging but I'm wondering whether anyone knows of 
some "trick" to perform averaging using combination of other functions.

What I mean by frame averaging is a bitwise averaging where, say 10 
frames (same size images) would be averaged, such that the same pixel in 
each image would be added together and the sum divided by 10.

Bob


From jepler at unpythonic.net  Wed Jul 27 20:08:44 2005
From: jepler at unpythonic.net (Jeff Epler)
Date: Wed, 27 Jul 2005 13:08:44 -0500
Subject: [Image-SIG] frame averaging
In-Reply-To: <42E7C761.6000808@grc.nasa.gov>
References: <42E7C761.6000808@grc.nasa.gov>
Message-ID: <20050727180844.GC4967@unpythonic.net>

There is 'ImageChops.add'.  If you have only two images, or you have a
number of images that is a power of two, you can use it.  Something like
    result = ImageChops.add(image_1, image_2, 2, 0)
For more than two images, average image 2*j and image 2*j+1 so that you
get half as many result images.  Repeat until there is only a single
result image.

This will of course round the images to 8 bits at each step.  You can do
better by using numarray.  If you start with images of depth 8, and you
have less than 2^24 of them, then you can simply sum them into a single
32-bit buffer, then divide by the number of images if you want to get an
8-bit result, or simply use the full range of values in your next step.
    http://effbot.org/zone/pil-numpy.htm

Jeff
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From klimek at grc.nasa.gov  Wed Jul 27 20:54:59 2005
From: klimek at grc.nasa.gov (Bob Klimek)
Date: Wed, 27 Jul 2005 14:54:59 -0400
Subject: [Image-SIG] seed fill in PIL
In-Reply-To: <42E7D60D.BD46BCA0@wadsworth.org>
References: <42E50D73.DBB3E3A0@wadsworth.org> 
	<42E6436C.6070006@grc.nasa.gov> <42E7D60D.BD46BCA0@wadsworth.org>
Message-ID: <42E7D883.2040203@grc.nasa.gov>

William Baxter wrote:

>Bob,
>
>The floodfill routine works great! I'm so glad I didn't write it myself. 
>Plus there are a lot more interesting things in your collection.
>Thanks for sharing!
>
>Best regards,
>Bill
>
>  
>
Glad to help!
Bob


From xmlrpc-user at ws.apache.org  Sat Jul 30 03:08:41 2005
From: xmlrpc-user at ws.apache.org (xmlrpc-user@ws.apache.org)
Date: Sat, 30 Jul 2005 10:08:41 +0900
Subject: [Image-SIG] Returned mail: Data format error
Message-ID: <20050730010900.1D7E11E4002@bag.python.org>

The original message was received at Sat, 30 Jul 2005 10:08:41 +0900 from 132.107.244.52

----- The following addresses had permanent fatal errors -----
<image-sig at python.org>

----- Transcript of the session follows -----
... while talking to server 70.225.42.148:
>>> MAIL FROM:xmlrpc-user at ws.apache.org
<<< 503 Address blacklisted

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From charras at mail.utexas.edu  Mon Jul 11 09:44:27 2005
From: charras at mail.utexas.edu (Guido Roberto Carballo Guerrero)
Date: Mon, 11 Jul 2005 07:44:27 -0000
Subject: [Image-SIG] problem installing PIL
Message-ID: <FA937443-7A2E-4B5C-8D48-3E8ABD6603C3@mail.utexas.edu>

My problem is with the selftest. This is what I get:

Guido-Roberto-Carballo-Guerreros-Computer:~/Desktop/Imaging-1.1.5  
charras$ python selftest.py
*****************************************************************
Failure in example: _info(Image.open("Images/lena.jpg"))
from line #24 of selftest.testimage
Exception raised:
Traceback (most recent call last):
   File "./doctest.py", line 499, in _run_examples_inner
     exec compile(source, "<string>", "single") in globs
   File "<string>", line 1, in ?
   File "./selftest.py", line 21, in _info
     im.load()
   File "PIL/ImageFile.py", line 180, in load
     d = Image._getdecoder(self.mode, d, a, self.decoderconfig)
   File "PIL/Image.py", line 328, in _getdecoder
     raise IOError("decoder %s not available" % decoder_name)
IOError: decoder jpeg not available
1 items had failures:
    1 of  55 in selftest.testimage
***Test Failed*** 1 failures.
*** 1 tests of 55 failed.

Do you know what these means? And how can I solve the problem. 'Cause  
I assume there is a problem, and that why I get the IOError. What is  
this decoder, how can I find it, and installed.

Thank you for your help.


-----------------------------------------------------
Guido Roberto Carballo Guerrero
PhD. Candidate
University of Texas at Austin
MS C2200, Mechanical Engineering
1University Station
Austin, TX 78712

Phone: 512-785-7971

It is common to consider failure as the enemy of success. And It is  
not so. Failure is perhaps a cruel teacher, but unimprovable, that  
drives us toward success, if we are capable of asking ourselves, "why  
did I fail?" and to examine until finding the reason.

Es com?n considerar el fracaso como el enemigo del ?xito. Y no es  
as?. El fracaso es quiz?s un maestro cruel, pero inmejorable, que nos  
conduce al ?xito, si es que somos capaces de preguntarnos "?por qu?  
fracas??" y de escudri?ar hasta hallar la raz?n.

T.J. Watson

Alternative email: guido.carballo at gmail.com

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From marc.cuculiere.cs at eurocontrol.int  Tue Jul 19 08:50:18 2005
From: marc.cuculiere.cs at eurocontrol.int (CUCULIERE Marc (CS))
Date: Tue, 19 Jul 2005 06:50:18 -0000
Subject: [Image-SIG]  Install problems on Fedora Core release 2
Message-ID: <CD4F7F9A2B7DD41194B900508BB0B8DD087EC4B6@agnfr02.eurocontrol.fr>

Thanks to Jim, It works fine now.
Many thanks to all of you that answered to my question.

Best Regards.
Marc

____

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From eachand at gmail.com  Wed Jul 20 21:56:23 2005
From: eachand at gmail.com (Aman)
Date: Wed, 20 Jul 2005 19:56:23 -0000
Subject: [Image-SIG] Branding tif files in batch
Message-ID: <5dc4aea705072012561efca712@mail.gmail.com>

I need to brand Tiff files (8000 images) with id and surce, does anyone have 
a a script that does this i juts need to label them.

Thnxs in advance..............

Cheers
Aman

-- 
OBSTACLES are what you see when you lose sight of GOALS
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