SVG PIL decoder
I would like to open svg files with PIL, but svg doesn't seem to be supported. Does anyone know about a svg decoder for the PIL? - Patrick -- http://mail.python.org/mailman/listinfo/python-list
Re: [Image-SIG] Some issue with easy_install and PIL/Imaging
Fredrik Lundh wrote: On Fri, Sep 11, 2009 at 3:49 PM, Chris Withers ch...@simplistix.co.uk wrote: Klein Stéphane wrote: Resume : 1. first question : why PIL package in pypi don't work ? Because Fred Lundh have his package distributions unfortunate names that setuptools doesn't like... It used to support this, but no longer does. To me, that says more about the state of setuptools than it does about the state of PIL, which has been using the same naming convention for 15 years. Yep, but it is now in the minority, and consistency in package naming is always good. Would there be any problems for you in naming the distribution in a setuptools-friendly way from the next point release? cheers, Chris -- Simplistix - Content Management, Batch Processing Python Consulting - http://www.simplistix.co.uk -- http://mail.python.org/mailman/listinfo/python-list
Re: SVG PIL decoder
On Wednesday 30 September 2009 18:01:50 Patrick Sabin wrote: I would like to open svg files with PIL, but svg doesn't seem to be supported. Does anyone know about a svg decoder for the PIL? Have a look at Cairo (python-cairo) in conjunction with librsvg (python-rsvg) -- that'll fix you up. You can go from an SVG to a PNG/array and thence into PIL if you need to. \d -- home: http://otherwise.relics.co.za/ 2D vector animation : https://savannah.nongnu.org/projects/things/ Font manager : https://savannah.nongnu.org/projects/fontypython/ -- http://mail.python.org/mailman/listinfo/python-list
Re: SVG PIL decoder
Donn wrote:
Have a look at Cairo (python-cairo) in conjunction with librsvg (python-rsvg)
-- that'll fix you up. You can go from an SVG to a PNG/array and thence into
PIL if you need to.
Thanks for the tip. Got it work, although it was a bit tricky, as
resizing doesn't seem to be supported by python-rsvg and
cairo.ImageSurface.create_from_png doesn't allow StringIO or
TemporaryFile for some reason (got Memory Error). So the code, if
someone else needs it or someone can improve it:
def open_svg_as_image(fn, width, height):
tmpfd, tmppath = tempfile.mkstemp(.png)
tmpfile = os.fdopen(tmpfd,'w')
file = StringIO.StringIO()
svgsurface = cairo.SVGSurface (file, width, height)
svgctx = cairo.Context(svgsurface)
svg = rsvg.Handle(file=fn)
svgwidth = svg.get_property('width')
svgheight = svg.get_property('height')
svgctx.scale(width/float(svgwidth),height/float(svgheight))
svg.render_cairo(svgctx)
svgsurface.write_to_png(tmpfile)
tmpfile.close()
svgsurface.finish()
tmpfile = open(tmppath, 'r')
imgsurface = cairo.ImageSurface.create_from_png(tmpfile)
imgwidth = imgsurface.get_width()
imgheight = imgsurface.get_height()
data = imgsurface.get_data()
im = Image.frombuffer(RGBA,(imgwidth, imgheight),
data ,raw,RGBA,0,1)
os.remove(tmppath)
return im
--
http://mail.python.org/mailman/listinfo/python-list
Re: SVG PIL decoder
On Thursday 01 October 2009 01:08:28 Patrick Sabin wrote: Thanks for the tip. Got it work, although it was a bit tricky, as resizing doesn't seem to be supported by python-rsvg and cairo.ImageSurface.create_from_png doesn't allow StringIO or My best suggestions are to visit the Cairo website -- inside there somewhere is a recipe page with many samples in Python. Next would be http://www.tortall.net/mu/wiki/CairoTutorial. Third is a tutorial I made (perhaps less useful) on my site http://otherwise.relics.co.za/wiki/Tuts/Python/Cairo/ links at bottom of that page Fourth is to join the ca...@cairographics.org mailing list at http://lists.cairographics.org/mailman/listinfo/cairo they are super helpful. Lastly is my animation API (in sig)which is also Python and may help you with the source. The general idea for scaling is to use matrices (cairo provides all commands) and then output the surface to a file-like object. My animation API brings selected snippets of SVG in from an Inkscape file (tagged by id), animates them by tweening and can output each frame to another SVG or to a PNG. HTH, \d -- home: http://otherwise.relics.co.za/ 2D vector animation : https://savannah.nongnu.org/projects/things/ Font manager : https://savannah.nongnu.org/projects/fontypython/ -- http://mail.python.org/mailman/listinfo/python-list
Re: [Image-SIG] Some issue with easy_install and PIL/Imaging
On Fri, Sep 11, 2009 at 3:49 PM, Chris Withers ch...@simplistix.co.uk wrote: Klein Stéphane wrote: Resume : 1. first question : why PIL package in pypi don't work ? Because Fred Lundh have his package distributions unfortunate names that setuptools doesn't like... It used to support this, but no longer does. To me, that says more about the state of setuptools than it does about the state of PIL, which has been using the same naming convention for 15 years. /F -- http://mail.python.org/mailman/listinfo/python-list
Re: Some issue with easy_install and PIL/Imaging
Fredrik Lundh a écrit : On Fri, Sep 11, 2009 at 3:49 PM, Chris Withers ch...@simplistix.co.uk wrote: Klein Stéphane wrote: Resume : 1. first question : why PIL package in pypi don't work ? Because Fred Lundh have his package distributions unfortunate names that setuptools doesn't like... It used to support this, but no longer does. To me, that says more about the state of setuptools than it does about the state of PIL, which has been using the same naming convention for 15 years. Ok, and what can we do ? Is a setuptools issue ? Can distribute (http://bitbucket.org/tarek/distribute/wiki/Home setuptools fork) fix this issue easily ? Regards, Stephane -- http://mail.python.org/mailman/listinfo/python-list
Re: Some issue with easy_install and PIL/Imaging
Klein Stéphane wrote: Resume : 1. first question : why PIL package in pypi don't work ? Because Fred Lundh have his package distributions unfortunate names that setuptools doesn't like... 2. second question : when I add PIL dependence in my setup.py and I do python setup.py develop, I've this error : error: Could not find required distribution Imaging. Why ? See above. Now, I add --find-links parameter to easy_install : If you google harder, you'll find there are packagings of PIL that do work with setuptools... Chris -- Simplistix - Content Management, Batch Processing Python Consulting - http://www.simplistix.co.uk -- http://mail.python.org/mailman/listinfo/python-list
Some issue with easy_install and PIL/Imaging
Hi,
I would like to insert Imaging dependence in my setup.py file.
Resume :
1. first question : why PIL package in pypi don't work ?
2. second question : when I add PIL dependence in my setup.py and I do
python setup.py develop, I've this error :
error: Could not find required distribution Imaging.
Why ?
Full explication :
First, I test manualy installation :
::
(env1)skl...@eee-sklein:$ easy_install pil
Searching for pil
Reading http://pypi.python.org/simple/pil/
Reading http://www.pythonware.com/products/pil
Reading http://effbot.org/zone/pil-changes-115.htm
Reading http://effbot.org/downloads/#Imaging
No local packages or download links found for pil
error: Could not find suitable distribution for
Requirement.parse('pil')
This command fail !
Now, I try with Imaging package name :
::
(env1)skl...@eee-sklein:$ easy_install Imaging
Searching for Imaging
Reading http://pypi.python.org/simple/Imaging/
Couldn't find index page for 'Imaging' (maybe misspelled?)
Scanning index of all packages (this may take a while)
Reading http://pypi.python.org/simple/
No local packages or download links found for Imaging
error: Could not find suitable distribution for
Requirement.parse('Imaging')
This command fail also.
Now, I add --find-links parameter to easy_install :
::
(env1)skl...@eee-sklein:$ easy_install --find-links
http://www.pythonware.com/products/pil/ Imaging
Searching for Imaging
Reading http://www.pythonware.com/products/pil/
Best match: Imaging 1.1.6
Downloading http://effbot.org/downloads/Imaging-1.1.6.tar.gz
Processing Imaging-1.1.6.tar.gz
Running Imaging-1.1.6/setup.py -q bdist_egg --dist-dir
/tmp/easy_install-rF1PG1/Imaging-1.1.6/egg-dist-tmp-Xtv8GV
libImaging/Effects.c:210: attention : ‘perlin_init’ defined but not
used
libImaging/File.c: In function ‘ImagingOpenPPM’:
libImaging/File.c:112: attention : ignoring return value of
‘fread’, declared with attribute warn_unused_result
libImaging/File.c:119: attention : ignoring return value of
‘fread’, declared with attribute warn_unused_result
libImaging/Geometry.c:236: attention : ‘quadratic_transform’
defined but not used
libImaging/Quant.c:311: attention : ‘test_sorted’ defined but not used
libImaging/Quant.c:676: attention : ‘checkContained’ defined but
not used
libImaging/QuantHash.c:136: attention : ‘_hashtable_test’ defined
but not used
PIL 1.1.6 BUILD SUMMARY
version 1.1.6
platform linux2 2.6.2 (release26-maint, Apr 19 2009, 01:56:41)
[GCC 4.3.3]
*** TKINTER support not available (Tcl/Tk 8.5 libraries needed)
--- JPEG support ok
--- ZLIB (PNG/ZIP) support ok
--- FREETYPE2 support ok
To add a missing option, make sure you have the required
library, and set the corresponding ROOT variable in the
setup.py script.
To check the build, run the selftest.py script.
zip_safe flag not set; analyzing archive contents...
Image: module references __file__
Adding PIL 1.1.6 to easy-install.pth file
Installing pilprint.py script to
/home/sklein/tests/test_eggs_pil/env1/bin
Installing pilfile.py script to
/home/sklein/tests/test_eggs_pil/env1/bin
Installing pilconvert.py script to
/home/sklein/tests/test_eggs_pil/env1/bin
Installing pilfont.py script to
/home/sklein/tests/test_eggs_pil/env1/bin
Installing pildriver.py script to
/home/sklein/tests/test_eggs_pil/env1/bin
Installed
/home/sklein/tests/test_eggs_pil/env1/lib/python2.6/site-packages/PIL-1.1.6-py2.6-linux-i686.egg
Skipping dependencies for PIL 1.1.6
This command work very well.
First question : why PIL package in pypi don't work ?
Now, I remove PIL in my virtualenv to test setup.py installation :
::
(env1)skl...@eee-sklein:$ rm
/home/sklein/tests/test_eggs_pil/env1/lib/python2.6/site-packages/PIL-1.1.6-py2.6-linux-i686.egg/
-rf
(env1)skl...@eee-sklein:$ cat setup.py
from setuptools import setup, find_packages
import sys, os
version = '0.0'
setup(name='test_pil',
version=version,
description=,
long_description=\
,
classifiers=[], # Get strings from
http://pypi.python.org/pypi?%3Aaction=list_classifiers
keywords='',
author='',
author_email='',
url='',
license='',
packages=find_packages(exclude=['ez_setup', 'examples',
'tests']),
include_package_data=True,
zip_safe=False,
dependency_links=['http://www.pythonware.com/products/pil/'],
install_requires
Re: PIL and Python
If I make it work, i will send the solution. Thank you ! -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL and Python
I don't extract data from jpegs. I wanna put some data in this (copyright of my site) ... On Aug 20, 2:01 pm, MaxTheMouse maxthemo...@googlemail.com wrote: On Aug 20, 10:23 am, catafest catalinf...@gmail.com wrote: On my photo jpg i have this : Image Type: jpeg (The JPEG image format) Width: 1224 pixels Height: 1632 pixels Camera Brand: Sony Ericsson Camera Model: W810i Date Taken: 2009:07:09 08:16:21 Exposure Time: 1/19 sec. ISO Speed Rating: 320 Flash Fired: Flash did not fire, compulsory flash mode. Metering Mode: Center-Weighted Average Software: R4EA031 prgCXC1250321_ORANGE_HN 4.5 This is the data i want edit it to make some copyright for my site. I don't know about PIL but you might want to try exif.py.http://sourceforge.net/projects/exif-py/ -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL and Python
catafest wrote: I don't extract data from jpegs. I wanna put some data in this (copyright of my site) ... My wrap for freeimage, called freeimagepy :) can't, as now, wrote exif information on the image, but since freeimage can do it, I think that it's not so difficult to add this type of feature. If you have some time for investigate and create a patch, I'll be happy to include it into the mainline! Contact me directly if you want to talk of need some help on how do it. Michele -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL and Python
On my photo jpg i have this : Image Type: jpeg (The JPEG image format) Width: 1224 pixels Height: 1632 pixels Camera Brand: Sony Ericsson Camera Model: W810i Date Taken: 2009:07:09 08:16:21 Exposure Time: 1/19 sec. ISO Speed Rating: 320 Flash Fired: Flash did not fire, compulsory flash mode. Metering Mode: Center-Weighted Average Software: R4EA031 prgCXC1250321_ORANGE_HN 4.5 This is the data i want edit it to make some copyright for my site. -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL and Python
On Aug 20, 10:23 am, catafest catalinf...@gmail.com wrote: On my photo jpg i have this : Image Type: jpeg (The JPEG image format) Width: 1224 pixels Height: 1632 pixels Camera Brand: Sony Ericsson Camera Model: W810i Date Taken: 2009:07:09 08:16:21 Exposure Time: 1/19 sec. ISO Speed Rating: 320 Flash Fired: Flash did not fire, compulsory flash mode. Metering Mode: Center-Weighted Average Software: R4EA031 prgCXC1250321_ORANGE_HN 4.5 This is the data i want edit it to make some copyright for my site. I don't know about PIL but you might want to try exif.py. http://sourceforge.net/projects/exif-py/ -- http://mail.python.org/mailman/listinfo/python-list
PIL and Python
Hello ! I want use python to change the note from .jpeg files . What is the functions on PIL how make this ? Thank you ! -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL and Python
On Aug 13, 1:55 pm, catalinf...@gmail.com catalinf...@gmail.com wrote: Hello ! I want use python to change the note from .jpeg files . What is the functions on PIL how make this ? Thank you ! What do u mean by the note? -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL and Python
On Thu, 13 Aug 2009 16:38:07 -0700, Martin wrote: I want use python to change the note from .jpeg files . What is the functions on PIL how make this ? What do u mean by the note? I think he means the EXIF data. -- http://mail.python.org/mailman/listinfo/python-list
Freetype2 in PIL
Hi, I have a problem with Freetype2 in the Python Image Library. I compiled it as 64bit and I got a file named freetype239.lib. So I added this file to a folder called lib. I added the parent folder of the lib folder to the setup.py settings (like all the others: libjpeg, zlib). LIbjpeg and Zlib works fine on Windows 64 bit and the installer can find them. But I just get a Freetype2 not found. Even renaming it to freetype.lib and freetype2.lib doesnt work. Any suggestions why PIL cant find the library? Bye and thanks in advance :) -- http://mail.python.org/mailman/listinfo/python-list
Freetype2 in PIL
Hi, I have a problem with Freetype2 in the Python Image Library. I compiled it as 64bit and I got a file named freetype239.lib. So I added this file to a folder called lib. I added the parent folder of the lib folder to the setup.py settings (like all the others: libjpeg, zlib). LIbjpeg and Zlib works fine on Windows 64 bit and the installer can find them. But I just get a Freetype2 not found. Even renaming it to freetype.lib and freetype2.lib doesnt work. Any suggestions why PIL cant find the library? Bye and thanks in advance :) -- http://mail.python.org/mailman/listinfo/python-list
raster (PIL)
hi. i wrote a program which transforms a string of zeroes ando ones into a png file. #!/usr/bin/env python import Image import sys bits_in_a_byte = 8 raster_string = \ 0010010000101000 00100100101010100100 00001110001010100100 00100100101010100100 0010010000000000 0010 10101001 1010 10101000 00001000 raster_lines = raster_string.splitlines() high = len(raster_lines) wide = len(raster_lines[0]) bytes_in_a_row = wide/bits_in_a_byte bitmap = for raster_line in raster_lines: for byte_count in range(bytes_in_a_row): first_bit = byte_count*bits_in_a_byte bitmap += chr(int(raster_line[first_bit:first_bit+bits_in_a_byte] , 2)) im = Image.fromstring(1, (wide , high) , bitmap) im.save(sys.stdout , PNG) any suggestions for improvement? bye -- http://mail.python.org/mailman/listinfo/python-list
Re: raster (PIL)
superpollo wrote: hi. i wrote a program which transforms a string of zeroes ando ones into a png file. #!/usr/bin/env python import Image import sys bits_in_a_byte = 8 raster_string = \ 0010010000101000 00100100101010100100 00001110001010100100 00100100101010100100 0010010000000000 0010 10101001 1010 10101000 00001000 raster_lines = raster_string.splitlines() high = len(raster_lines) wide = len(raster_lines[0]) bytes_in_a_row = wide/bits_in_a_byte This will give you the wrong result if not divideable by bits_in_a_byte. bitmap = for raster_line in raster_lines: for byte_count in range(bytes_in_a_row): first_bit = byte_count*bits_in_a_byte bitmap += chr(int(raster_line[first_bit:first_bit+bits_in_a_byte] , 2)) im = Image.fromstring(1, (wide , high) , bitmap) im.save(sys.stdout , PNG) any suggestions for improvement? Instead of res = for ...: res += ... use res = [] for ...: res.append(...) .join(res) There are some optimizations for the +=-op on strings, but I'm not sure how far they go, and the other form is safer. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: raster (PIL)
superpollo wrote: i wrote a program which transforms a string of zeroes ando ones into a png file. #!/usr/bin/env python import Image import sys bits_in_a_byte = 8 raster_string = \ 0010010000101000 00100100101010100100 00001110001010100100 00100100101010100100 0010010000000000 0010 10101001 1010 10101000 00001000 raster_lines = raster_string.splitlines() high = len(raster_lines) wide = len(raster_lines[0]) bytes_in_a_row = wide/bits_in_a_byte bitmap = for raster_line in raster_lines: for byte_count in range(bytes_in_a_row): first_bit = byte_count*bits_in_a_byte bitmap += chr(int(raster_line[first_bit:first_bit+bits_in_a_byte] , 2)) im = Image.fromstring(1, (wide , high) , bitmap) im.save(sys.stdout , PNG) any suggestions for improvement? You can simplify the inner loop: for first_bit in range(0, wide, bits_in_a_byte): bitmap += ... and get rid of a few helper variables. Here's a different approach: #!/usr/bin/env python import Image import string import sys mapping = string.maketrans(01, \x00\xff) raster_string = ... width = raster_string.index(\n) height = raster_string.count(\n) raster_string = raster_string.translate(mapping, \n) im = Image.fromstring(L, (width, height), raster_string) im.convert(1).save(sys.stdout, PNG) The idea is to move the bit-twiddling from python to code written in C, pointless for such a tiny picture but crucial for the performance when you want to manipulate larger images. Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: raster (PIL)
Diez B. Roggisch wrote: superpollo wrote: ... high = len(raster_lines) wide = len(raster_lines[0]) bytes_in_a_row = wide/bits_in_a_byte This will give you the wrong result if not divideable by bits_in_a_byte. then maybe: #!/usr/bin/env python import Image import sys bits_in_a_byte = 8 raster_string = \ 00 0010010000101000 00100100101010100100 00001110001010100100 00100100101010100100 0010010000000000 0010 10101001 1010 10101000 00001000 raster_lines = raster_string.splitlines() high = len(raster_lines) wide = len(raster_lines[0]) bytes_in_a_row = wide/bits_in_a_byte wide_for_real = bytes_in_a_row*bits_in_a_byte if wide_for_real: bitmap = for raster_line in raster_lines: for byte_count in range(bytes_in_a_row): first_bit = byte_count*bits_in_a_byte bitmap += chr(int(raster_line[first_bit:first_bit+bits_in_a_byte] , 2)) im = Image.fromstring(1, (wide_for_real , high) , bitmap) im.save(sys.stdout , PNG) bye -- http://mail.python.org/mailman/listinfo/python-list
Re: raster (PIL)
Peter Otten wrote: superpollo wrote: i wrote a program which transforms a string of zeroes ando ones into a png file. ... any suggestions for improvement? ... Here's a different approach: ... The idea is to move the bit-twiddling from python to code written in C, pointless for such a tiny picture but crucial for the performance when you want to manipulate larger images. very very interesting... you know i come from a lower level language approach (C/Pascal) so i find it difficult (but full of fascination) to adapt to such a different and much simpler way of thinking. anyways, thanks a lot. bye -- http://mail.python.org/mailman/listinfo/python-list
Re: raster (PIL)
Peter Otten wrote: ... Here's a different approach: ... raster_string = ... width = raster_string.index(\n) height = raster_string.count(\n) your approach has a funny side-effect: try to remove just one zero from the first line of the raster ;-) bye -- http://mail.python.org/mailman/listinfo/python-list
Re: raster (PIL)
Peter Otten wrote: ... im.convert(1).save(sys.stdout, PNG) ... a q about pil: im.convert(1) is different from: im2 = im.convert(1) right? in the former im is changed (the method applies to im) but in the latter im is unchanged (first im is copied unto im2 and then the method is applied to im2)... am i right? bye -- http://mail.python.org/mailman/listinfo/python-list
Re: raster (PIL)
superpollo wrote: Diez B. Roggisch wrote: superpollo wrote: ... high = len(raster_lines) wide = len(raster_lines[0]) bytes_in_a_row = wide/bits_in_a_byte This will give you the wrong result if not divideable by bits_in_a_byte. then maybe: #!/usr/bin/env python import Image import sys bits_in_a_byte = 8 raster_string = \ 00 0010010000101000 00100100101010100100 00001110001010100100 00100100101010100100 0010010000000000 0010 10101001 1010 10101000 00001000 raster_lines = raster_string.splitlines() high = len(raster_lines) wide = len(raster_lines[0]) bytes_in_a_row = wide/bits_in_a_byte wide_for_real = bytes_in_a_row*bits_in_a_byte No. Because that would skip up to 7 bits. Instead, do bytes_in_a_row = wide/bits_in_a_byte if wide % bits_in_a_byte: bytes_in_a_row += 1 Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: raster (PIL)
superpollo wrote: Peter Otten wrote: ... im.convert(1).save(sys.stdout, PNG) ... a q about pil: im.convert(1) is different from: im2 = im.convert(1) right? in the former im is changed (the method applies to im) but in the latter im is unchanged (first im is copied unto im2 and then the method is applied to im2)... am i right? No. A method has no clue whether its result is used or discarded. Therefore im.convert(1) creates a new image in the specified mode, too, which is discarded immediately. If you don't need the result you probably shouldn't call the method at all. Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: raster (PIL)
Peter Otten wrote: superpollo wrote: Peter Otten wrote: ... im.convert(1).save(sys.stdout, PNG) ... a q about pil: im.convert(1) is different from: im2 = im.convert(1) right? in the former im is changed (the method applies to im) but in the latter im is unchanged (first im is copied unto im2 and then the method is applied to im2)... am i right? No. A method has no clue whether its result is used or discarded. Therefore im.convert(1) creates a new image in the specified mode, too, which is discarded immediately. but in: im.convert(1).save(sys.stdout, PNG) the new (anonymous) image created by .convert is not discarded *immediately*, i mean *before* the .save method is called on it, right? bye -- http://mail.python.org/mailman/listinfo/python-list
Re: raster (PIL)
superpollo wrote: Peter Otten wrote: superpollo wrote: Peter Otten wrote: ... im.convert(1).save(sys.stdout, PNG) ... a q about pil: im.convert(1) is different from: im2 = im.convert(1) right? in the former im is changed (the method applies to im) but in the latter im is unchanged (first im is copied unto im2 and then the method is applied to im2)... am i right? No. A method has no clue whether its result is used or discarded. Therefore im.convert(1) creates a new image in the specified mode, too, which is discarded immediately. but in: im.convert(1).save(sys.stdout, PNG) the new (anonymous) image created by .convert is not discarded *immediately*, i mean *before* the .save method is called on it, right? Of course. Think of it as a shortcut for tmp = im.convert(...) tmp.save(...) del tmp Peter -- http://mail.python.org/mailman/listinfo/python-list
PIL for OSX 64bit
Hi,
I have a problem with Python and the Python Image Library to get it
work on OSX 64 bit. Maybe anyone can help me? I started Python in 64
bit mode and called Image.open(...).load() and got:
ImportError: The _imaging C module is not installed
Yes, it seems PIL is not available in 64 bit on my system, but I can't
compile it in any way. Is there a tutorial or something like that
which explains how I can compile it in 64 bit? I found a workaround
where I added this function to the setup.py
OrigExtension = Extension
def Extension(*args, **kwargs):
extra_args = ['-arch', 'x86_64']
kwargs['extra_compile_args'] = extra_args + kwargs.get
('extra_compile_args', [])
kwargs['extra_link_args'] = extra_args + kwargs.get('extra_link_args',
[])
return OrigExtension(*args, **kwargs)
without success. Can anyone help me? Thanks...
Cheers, Googler
--
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Re: PIL for OSX 64bit
In article e0564f03-f736-4d0f-8c50-e1bce0eb5...@r2g2000yqm.googlegroups.com, moerchendiser2k3 googler.1.webmas...@spamgourmet.com wrote: I have a problem with Python and the Python Image Library to get it work on OSX 64 bit. Maybe anyone can help me? I started Python in 64 bit mode and called Image.open(...).load() and got: ImportError: The _imaging C module is not installed [...] It's hard to know what your problem is without more information. One potential stumbling block: PIL has dependencies on other open-source libraries, such as libjpeg and freetype. You'll need to have 64-bit versions of them available when building and when running, as well. There are a number of ways to do that. The simplest might be to download pre-built frameworks containing those libraries from here: http://www.kyngchaos.com/software:frameworks There are also build scripts there for building your own versions from scratch. -- Ned Deily, n...@acm.org -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL Python Imaging Library
On 2009-06-08, Xah Lee xah...@gmail.com wrote: is there a python image library that does pretty much what imagemagick does? http://www.pythonware.com/products/pil/ -- http://mail.python.org/mailman/listinfo/python-list
Building PIL under Cygwin Python 2.5
This has apparently been a problematic thing for a while now, as the following article indicates. I first ran into the error message about not being able to remap C:\cygwin\bin\tk84.dll to be the same address as it's parent. Using that information, Google helped me find this article: http://blog.datahammer.info/2008/11/install-pil-under-cygwin-python-25.html After following it's advice and running: $ ./rebase -b 0x10 tk84.dll I was able to get the PIL build to proceed, but when it was done, it said that there was no support built for Tk, and I then noticed that basic Tkinter functionality was broken from the Python interpreter. I went back to Cygwin setup, and had it reinstall the tcl/tk package, and then Tkinter (import from the interactive interp.) got fixed. Googling some more, I found this article (which implied datahammer isn't quite right): http://www.pythonchallenge.com/forums/viewtopic.php?t=135 I ran /usr/bin/rebaseall (from ash)(and if you end up doing this yourself, be aware that it takes a while - I was afraid that process had hung and I was going to have to rebuild the whole Cygwin shooting match from scratch, but it eventually completed (silently)). After this, I checked that Tkinter still worked from Python (it did), and then tore out the whole PIL directory (Imaging-1.1.6) I had tried to install from before, re-extracted the tar file to get a clean install directory, and then again attempted to build PIL. Now, instead of getting the failure message about not being able to remap the dll, the build just hangs: $ python setup.py build_ext -i running build_ext building '_imaging' extension creating build creating build/temp.cygwin-1.5.25-i686-2.5 creating build/temp.cygwin-1.5.25-i686-2.5/libImaging gcc -fno-strict-aliasing -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict- prototypes -DHAVE_LIBJPEG -DHAVE_LIBZ -I/usr/include/freetype2 - IlibImaging -I/usr/include -I/home/ej/python/PIL/jpeg-6b -I/usr/ include/python2.5 -c _imaging.c -o build/temp.cygwin-1.5.25-i686-2.5/ _imaging.o eventually hit CTRL-C to leave Now, I'm rather stuck and I'm thinking This really shouldn't be that hard. So, rebasing (rebaseall'ing) the cygwin system as outlined in the datahammer blog entry (along with the ash advice of the pychallenge article) still doesn't seem to be enough to get a clean build. I think this is an issue that probably needs to be addressed by PIL maintainers that fully understand the root of the problem (and it should probably go in the PIL FAQ), but in the meantime does anyone out there know how to get around this issue? Thanks, -ej -- http://mail.python.org/mailman/listinfo/python-list
PIL, and Parts of tuples
I have two problems, and I can't find anything about either of them. The first is that PIL does not seem to have any way to search each and every pixel for a value, like for pixel in img: if pixel = ((60, 30), (58, 23), (87 57)): # Get out of the for loop # Also, save the pixel quardinates to a variable Then, I also want it to look at a specific pixel (I've got that down), and do something if the any one of the values in the tuple is out of range. The issue is, the range is different for every value. Basically, it is to see if the pixel is in an acceptable color range. So, say, the 60 above can be anywhere from 58-62, but the 30 needs to be between 28-40. Is there any way to parse/deal with a value at a specific slot in a tuple? -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL, and Parts of tuples
On Mon, Apr 13, 2009 at 1:34 PM, Vistro vis...@vistro.net wrote: I have two problems, and I can't find anything about either of them. The first is that PIL does not seem to have any way to search each and every pixel for a value, like for pixel in img: if pixel = ((60, 30), (58, 23), (87 57)): snip see if the pixel is in an acceptable color range. So, say, the 60 above can be anywhere from 58-62, but the 30 needs to be between 28-40. Is there any way to parse/deal with a value at a specific slot in a tuple? Yes, use subscripting, just like with lists: the_tuple = (60, 30)#for example if not (58 = the_tuple[0] = 62) or not (28 = the_tuple[1] = 40): #it's out of range, do something Cheers, Chris -- I have a blog: http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL, and Parts of tuples
Actually, I screwed up. See 60, 30? That's actually the range. The tuple to be checked will look like (40, 25, 51) So yeah. Sorry for the bad info. For a good time, go to Start:Run and type in format Chttp://www.vistro.net/ On Mon, Apr 13, 2009 at 3:41 PM, Chris Rebert c...@rebertia.com wrote: On Mon, Apr 13, 2009 at 1:34 PM, Vistro vis...@vistro.net wrote: I have two problems, and I can't find anything about either of them. The first is that PIL does not seem to have any way to search each and every pixel for a value, like for pixel in img: if pixel = ((60, 30), (58, 23), (87 57)): snip see if the pixel is in an acceptable color range. So, say, the 60 above can be anywhere from 58-62, but the 30 needs to be between 28-40. Is there any way to parse/deal with a value at a specific slot in a tuple? Yes, use subscripting, just like with lists: the_tuple = (60, 30)#for example if not (58 = the_tuple[0] = 62) or not (28 = the_tuple[1] = 40): #it's out of range, do something Cheers, Chris -- I have a blog: http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
Writing a Raw Image to a File (Win, PIL)
I have an image of described as:
Img Info: {}
size: (640, 480)
format: None
mode: P
palette: ImagePalette.ImagePalette instance at 0x02393378
bands: ('P',)
type: type 'instance'
I'd like to write it to a file. Apparently, I need to convert it to a string
first. How do I do that? Pickle?
--
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(121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time)
Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet
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Re: Writing a Raw Image to a File (Win, PIL)
W. eWatson schrieb:
I have an image of described as:
Img Info: {}
size: (640, 480)
format: None
mode: P
palette: ImagePalette.ImagePalette instance at 0x02393378
bands: ('P',)
type: type 'instance'
I'd like to write it to a file. Apparently, I need to convert it to a
string first. How do I do that? Pickle?
Did you bother reading the PIL documentation just for about 30seconds?
http://www.pythonware.com/library/pil/handbook/image.htm
Hint: look for save.
Diez
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Re: Writing a Raw Image to a File (Win, PIL)
Diez B. Roggisch wrote:
W. eWatson schrieb:
I have an image of described as:
Img Info: {}
size: (640, 480)
format: None
mode: P
palette: ImagePalette.ImagePalette instance at 0x02393378
bands: ('P',)
type: type 'instance'
I'd like to write it to a file. Apparently, I need to convert it to a
string first. How do I do that? Pickle?
Did you bother reading the PIL documentation just for about 30seconds?
http://www.pythonware.com/library/pil/handbook/image.htm
Hint: look for save.
Diez
So, you are telling me what? To save it as a jpg file, or maybe a bmp file?
All of them have headers, right?
--
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(121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time)
Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet
Web Page: www.speckledwithstars.net/
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Re: Writing a Raw Image to a File (Win, PIL)
W. eWatson wrote:
I have an image of described as:
Img Info: {}
size: (640, 480)
format: None
mode: P
palette: ImagePalette.ImagePalette instance at 0x02393378
bands: ('P',)
type: type 'instance'
I'd like to write it to a file. Apparently, I need to convert it to a
string first. How do I do that? Pickle?
Have you tried the .tostring() method?
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Re: Writing a Raw Image to a File (Win, PIL)
MRAB wrote:
W. eWatson wrote:
I have an image of described as:
Img Info: {}
size: (640, 480)
format: None
mode: P
palette: ImagePalette.ImagePalette instance at 0x02393378
bands: ('P',)
type: type 'instance'
I'd like to write it to a file. Apparently, I need to convert it to a
string first. How do I do that? Pickle?
Have you tried the .tostring() method?
Perfect. Works exactly like I had hoped, 640x480 bytes--nothing more.
Thanks. I had noticed it, but didn't get the connection. Then I wandered
around nearby in the PIL description, and noticed something about decoding
and write. Unknown territory to me. However, if I had followed up there was
a connection between tostring and raw decoding.
--
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(121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time)
Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet
Web Page: www.speckledwithstars.net/
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Re: Writing a Raw Image to a File (Win, PIL)
W. eWatson schrieb:
Diez B. Roggisch wrote:
W. eWatson schrieb:
I have an image of described as:
Img Info: {}
size: (640, 480)
format: None
mode: P
palette: ImagePalette.ImagePalette instance at 0x02393378
bands: ('P',)
type: type 'instance'
I'd like to write it to a file. Apparently, I need to convert it to a
string first. How do I do that? Pickle?
Did you bother reading the PIL documentation just for about 30seconds?
http://www.pythonware.com/library/pil/handbook/image.htm
Hint: look for save.
Diez
So, you are telling me what? To save it as a jpg file, or maybe a bmp
file? All of them have headers, right?
Yes. Where exactly do you say I don't want headers, I want raw data
dumped to the disk?
Diez
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Re: Writing a Raw Image to a File (Win, PIL)
Diez B. Roggisch wrote:
W. eWatson schrieb:
Diez B. Roggisch wrote:
W. eWatson schrieb:
I have an image of described as:
Img Info: {}
size: (640, 480)
format: None
mode: P
palette: ImagePalette.ImagePalette instance at 0x02393378
bands: ('P',)
type: type 'instance'
I'd like to write it to a file. Apparently, I need to convert it to
a string first. How do I do that? Pickle?
Did you bother reading the PIL documentation just for about 30seconds?
http://www.pythonware.com/library/pil/handbook/image.htm
Hint: look for save.
Diez
So, you are telling me what? To save it as a jpg file, or maybe a bmp
file? All of them have headers, right?
Yes. Where exactly do you say I don't want headers, I want raw data
dumped to the disk?
Erm, in the Subject line? :-)
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Re: Writing a Raw Image to a File (Win, PIL)
MRAB schrieb:
Diez B. Roggisch wrote:
W. eWatson schrieb:
Diez B. Roggisch wrote:
W. eWatson schrieb:
I have an image of described as:
Img Info: {}
size: (640, 480)
format: None
mode: P
palette: ImagePalette.ImagePalette instance at 0x02393378
bands: ('P',)
type: type 'instance'
I'd like to write it to a file. Apparently, I need to convert it to
a string first. How do I do that? Pickle?
Did you bother reading the PIL documentation just for about 30seconds?
http://www.pythonware.com/library/pil/handbook/image.htm
Hint: look for save.
Diez
So, you are telling me what? To save it as a jpg file, or maybe a bmp
file? All of them have headers, right?
Yes. Where exactly do you say I don't want headers, I want raw data
dumped to the disk?
Erm, in the Subject line? :-)
Darn. Should consider reading them.
Diez
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Re: Problem with PIL/Tkinter Program Example
W. eWatson wrote: Something is amiss here. The program produces a canvas in which one can move an object around. The input file is hard coded (see open). If you want to try it, you'll need to provide a file. Python error below. Name space difficulty? Traceback (most recent call last): File C \Sandia_Meteors\Sentinel_Development\Development_Sentuser-Utilities\Playground\fun-move_object.py, line 45, in module Demo(root) File C \Sandia_Meteors\Sentinel_Development\Development_Sentuser-Utilities\Playground\fun-move_object.py, line 35, in Demo data.img=ImageTk.PhotoImage(img) NameError: global name 'ImageTk' is not defined If you want to use the ImageTk module you have to import it first: #Mouse movement from Tkinter import * import PIL import Image import ImageTk [rest of your code here] Peter -- http://mail.python.org/mailman/listinfo/python-list
Problem with PIL/Tkinter Program Example
Something is amiss here. The program produces a canvas in which one can move
an object around. The input file is hard coded (see open). If you want to
try it, you'll need to provide a file. Python error below. Name space
difficulty?
#Mouse movement
from Tkinter import *
import PIL
import Image
class data:
startx=0
starty=0
def startmotioncallback(event):
data.startx=event.x
data.starty=event.y
def motioncallback(event):
deltax=event.x-data.startx
deltay=event.y-data.starty
data.startx=event.x
data.starty=event.y
# should put some limits on where the cirle is moved
# left as exercise.
data.cnv.move(data.ring,deltax,deltay)
def Demo(root):
# resize window
root.geometry('400x400+0+0')
data.root=root
# make a canvas
cnv=Canvas(root)
cnv.pack(expand=1,fill=BOTH)
data.cnv=cnv
img=Image.open('jupa9810.jpg') # some image you have.
raw_input(Hello)
data.img=ImageTk.PhotoImage(img)
data.photo=cnv.create_image(0,0,image=data.img,anchor='nw')
data.ring=cnv.create_oval((100,100,300,300))
cnv.bind(B1-Motion,motioncallback)
cnv.bind(Button-1,startmotioncallback)
root.mainloop()
Traceback (most recent call last):
File
C:\Sandia_Meteors\Sentinel_Development\Development_Sentuser-Utilities\Playground\fun-move_object.py,
line 45, in module
Demo(root)
File
C:\Sandia_Meteors\Sentinel_Development\Development_Sentuser-Utilities\Playground\fun-move_object.py,
line 35, in Demo
data.img=ImageTk.PhotoImage(img)
NameError: global name 'ImageTk' is not defined
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Re: Problem with PIL/Tkinter Program Example
Peter Otten wrote: W. eWatson wrote: Something is amiss here. The program produces a canvas in which one can move an object around. The input file is hard coded (see open). If you want to try it, you'll need to provide a file. Python error below. Name space difficulty? Traceback (most recent call last): File C \Sandia_Meteors\Sentinel_Development\Development_Sentuser-Utilities\Playground\fun-move_object.py, line 45, in module Demo(root) File C \Sandia_Meteors\Sentinel_Development\Development_Sentuser-Utilities\Playground\fun-move_object.py, line 35, in Demo data.img=ImageTk.PhotoImage(img) NameError: global name 'ImageTk' is not defined If you want to use the ImageTk module you have to import it first: #Mouse movement from Tkinter import * import PIL import Image import ImageTk [rest of your code here] Peter Very good. Thanks. -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet Web Page: www.speckledwithstars.net/ -- http://mail.python.org/mailman/listinfo/python-list
PIL\Tkinter and Transparencies, Rubber Lines, and Dragging Image Objects
Basically, I'd like to know how one (broadly, e.g., references in Win-land) does IP (image processing) and drawing techniques such as rubber lines, and dragging image objects across the canvas. I know there are some pretty powerful toolkits out there, but I'd like to limit this to PIL and Tkinter. If it can't be done with them, then I'll consider other possibilities. As a starter, on the topic of transparencies, consider this program that I pulled off the web and was posted in 1999. It purports to illustrate how one might produce a transparency. #!/usr/bin/python # see http://mail.python.org/pipermail/python-list/1999-May/003388.html from Tkinter import * import Image, ImageTk import tkFileDialog class Transparency: def __init__(self, parent): self.canvas = Canvas(parent, bg='green') self.canvas.pack() b = Button(parent, command=self.open, text=Select graphics file) b.pack() def open(self): self.canvas.delete(ALL) filename = tkFileDialog.askopenfilename() if filename != '': im = Image.open(filename) if im.mode != RGBA: im = Image.open(filename).convert(RGBA) source = im.split() R, G, B, A = 0, 1, 2, 3 mask = im.point(lambda i: i 0 and 255) # use black as transparent source[A].paste(mask) im = Image.merge(im.mode, source) # build a new multiband image self.graphic = ImageTk.PhotoImage(image=im) self.canvas.create_image(100, 100, image=self.graphic) if __name__ == __main__: root = Tk() test = Transparency(root) root.mainloop() It colors the canvas green, and produces a black background. An image is merged with the background. I tried out the program. It executes, but I do not see where the transparency is apparent. I used a gif with a picture of a telescope on a white background, and the result is what I would see if I pasted the telescope and white background onto the green canvas. If there's something missing in my observation, I'd like to know what it is. To further explore drawing graphics, what roughly is the capability of Tkinter or PIL to allow one to place a transparent layer (mode, I guess in PIL may be roughly equivalent to a layer in tools like Photoshop) on top of an image and then move the transparency around over the image with a mouse? -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet Web Page: www.speckledwithstars.net/ -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL\Tkinter and Transparencies, Rubber Lines, and Dragging Image Objects
W. eWatson wrote: Basically, I'd like to know how one (broadly, e.g., references in Win-land) does IP (image processing) and drawing techniques such as rubber lines, and dragging image objects across the canvas. I know there are some pretty powerful toolkits out there, but I'd like to limit this to PIL and Tkinter. If it can't be done with them, then I'll consider other possibilities. As a starter, on the topic of transparencies, consider this program that I pulled off the web and was posted in 1999. It purports to illustrate how one might produce a transparency. OK, maybe I'm dumb but: #!/usr/bin/python # see http://mail.python.org/pipermail/python-list/1999-May/003388.html from Tkinter import * import Image, ImageTk import tkFileDialog class Transparency: def __init__(self, parent): self.canvas = Canvas(parent, bg='green') self.canvas.pack() b = Button(parent, command=self.open, text=Select graphics file) b.pack() def open(self): self.canvas.delete(ALL) filename = tkFileDialog.askopenfilename() if filename != '': im = Image.open(filename) if im.mode != RGBA: im = Image.open(filename).convert(RGBA) source = im.split() R, G, B, A = 0, 1, 2, 3 mask = im.point(lambda i: i 0 and 255) # use black as transparent source[A].paste(mask) im = Image.merge(im.mode, source) # build a new multiband image self.graphic = ImageTk.PhotoImage(image=im) self.canvas.create_image(100, 100, image=self.graphic) if __name__ == __main__: root = Tk() test = Transparency(root) root.mainloop() It colors the canvas green, and produces a black background. An image is merged with the background. I tried out the program. It executes, but I do not see where the transparency is apparent. I used a gif with a picture of a telescope on a white background, and the result is what I would see if I pasted the telescope and white background onto the green canvas. I have neither PIL, nor the image you're using so I can just guess. But if you want to use a white background, maybe you should use a mask defined with: mask = im.point(lambda i: 255 if i = 255 else 0) (if I understood the mask construction correctly...). HTH - Eric - -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL\Tkinter and Transparencies, Rubber Lines, and Dragging Image Objects
You got it. That lamda did look a little odd. The white background is opaque and the telescope is seen as green. The program will ask for a file. I didn't write the code. Eric Brunel wrote: W. eWatson wrote: Basically, I'd like to know how one (broadly, e.g., references in Win-land) does IP (image processing) and drawing techniques such as rubber lines, and dragging image objects across the canvas. I know there are some pretty powerful toolkits out there, but I'd like to limit this to PIL and Tkinter. If it can't be done with them, then I'll consider other possibilities. As a starter, on the topic of transparencies, consider this program that I pulled off the web and was posted in 1999. It purports to illustrate how one might produce a transparency. OK, maybe I'm dumb but: #!/usr/bin/python # see http://mail.python.org/pipermail/python-list/1999-May/003388.html from Tkinter import * import Image, ImageTk ... HTH - Eric - -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet Web Page: www.speckledwithstars.net/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Converting a PIL image object to a buffer
En Wed, 01 Apr 2009 19:20:43 -0300, Simon Hibbs simon.hi...@gmail.com escribió: On 1 Apr, 21:43, Gary Herron gher...@islandtraining.com wrote: Simon Hibbs wrote: I'm trying to dump a snapshot of my application window to the clipboard. I can use ImageGrab in PIL to get the screen data into a PIL image object, which i have converted to a bitmap using ImageWin, but when I try to pass this to the clipboard using - win32clipboard.SetClipboardData(win32clipboard.CF_BITMAP, img) It fails, telling be that The object must support the buffer interface. The second argument to SetClipboardData should be a handle to a bitmap resource, not a string. See win32\test\test_clipboard.py for an example. PS: Hmm, looking at SetClipboardData, seems that a string containing the data in the right format *might* work too. But it's easier to use LoadImage than building the resource by hand, I think. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: Converting a PIL image object to a buffer
Simon Hibbs schrieb: On 1 Apr, 21:43, Gary Herron gher...@islandtraining.com wrote: Simon Hibbs wrote: I'm trying to dump a snapshot of my application window to the clipboard. I can use ImageGrab in PIL to get the screen data into a PIL image object, which i have converted to a bitmap using ImageWin, but when I try to pass this to the clipboard using - win32clipboard.SetClipboardData(win32clipboard.CF_BITMAP, img) It fails, telling be that The object must support the buffer interface. How can I convert a PIL image into a buffer object? I can't find any clues. PIL images have a tostring method that returns a string containing all the pixel data. Would that help you to either create the needed buffer? Or perhaps you could by-pass the need for a buffer, and just use the byte string. If I use tostring I get a string which I can put on the clipboard, but it isn't any kind of image. I can make a PIL image from the string but them I'm back to square one again. Did you actually try that? Strings support the buffer interface, and the type of the binary data you set should be defined by the first argument. Alternatively (if the string is not of the proper format), maybe storing the image to a (c)StringIO-object as BMP and retrieving it's value would help. However, I think your concerns about wasting memory when using a file are moot - creating an extra memory buffer isn't less memory consuming, and if the file is living only a few seconds it might not even actually hit the disk at all. In the end, the important thing is the working clipboard. Diez -- http://mail.python.org/mailman/listinfo/python-list
PIL Handbooks
I'm very new to PIL, and don't see any handbooks for 1.1.6 or the forthcoming 1.1.7. In fact, this looks like the extent of them: * Python Imaging Library Handbook for 1.1.5 (online) * Python Imaging Library Handbook for 1.1.3 (PDF) Somewhere in my recent search I see that 1.1.6 has some features like digital cameras and scanners. Ah here, http://pypi.python.org/pypi/PIL/1.1.6. Any other news? I'd settle even for a 1.1.5 pdf of the handbook right now. -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet Web Page: www.speckledwithstars.net/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Converting a PIL image object to a buffer
On 2 Apr, 08:28, Diez B. Roggisch de...@nospam.web.de wrote: Simon Hibbs schrieb: On 1 Apr, 21:43, Gary Herron gher...@islandtraining.com wrote: Simon Hibbs wrote: I'm trying to dump a snapshot of my application window to the clipboard. I can use ImageGrab in PIL to get the screen data into a PIL image object, which i have converted to a bitmap using ImageWin, but when I try to pass this to the clipboard using - win32clipboard.SetClipboardData(win32clipboard.CF_BITMAP, img) It fails, telling be that The object must support the buffer interface. How can I convert a PIL image into a buffer object? I can't find any clues. PIL images have a tostring method that returns a string containing all the pixel data. Would that help you to either create the needed buffer? Or perhaps you could by-pass the need for a buffer, and just use the byte string. If I use tostring I get a string which I can put on the clipboard, but it isn't any kind of image. I can make a PIL image from the string but them I'm back to square one again. Did you actually try that? Strings support the buffer interface, and the type of the binary data you set should be defined by the first argument. Alternatively (if the string is not of the proper format), maybe storing the image to a (c)StringIO-object as BMP and retrieving it's value would help. However, I think your concerns about wasting memory when using a file are moot - creating an extra memory buffer isn't less memory consuming, and if the file is living only a few seconds it might not even actually hit the disk at all. In the end, the important thing is the working clipboard. Yes I did try this, the code to dump the sting version to the clipboard worked, but pasting it back out wasn't possible although I could print them to the console. I don't mean wasting memory, just that actualy hitting the file system and creating a file seems as though it shouldn't be necessery. Is there any good reason why you can't just create an empty buffer object or file object directly? It seems like an unecessery restriction, unless there's some underlying reason such as that it's hard to implement in c, which seems implausible. Sorry, that's a rhetorical question. I've not had a chance to work on this today, if I find an elegant way round it I'll post the results for future googling. Simon Hibbs -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL Handbooks
W. eWatson wrote: I'm very new to PIL, and don't see any handbooks for 1.1.6 or the forthcoming 1.1.7. In fact, this looks like the extent of them: * Python Imaging Library Handbook for 1.1.5 (online) * Python Imaging Library Handbook for 1.1.3 (PDF) Somewhere in my recent search I see that 1.1.6 has some features like digital cameras and scanners. Ah here, http://pypi.python.org/pypi/PIL/1.1.6. Any other news? I'd settle even for a 1.1.5 pdf of the handbook right now. Download the source package tarball , it contains the HTML documentation. --irmen -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL Handbooks
Irmen de Jong wrote: W. eWatson wrote: I'm very new to PIL, and don't see any handbooks for 1.1.6 or the forthcoming 1.1.7. In fact, this looks like the extent of them: * Python Imaging Library Handbook for 1.1.5 (online) * Python Imaging Library Handbook for 1.1.3 (PDF) Somewhere in my recent search I see that 1.1.6 has some features like digital cameras and scanners. Ah here, http://pypi.python.org/pypi/PIL/1.1.6. Any other news? I'd settle even for a 1.1.5 pdf of the handbook right now. Download the source package tarball , it contains the HTML documentation. --irmen In the Doc foler, I see a bunch of html files, but nothing about a handbook. It seems like the front sections are missing in that folder. Concepts, tutor, whatever. -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet Web Page: www.speckledwithstars.net/ -- http://mail.python.org/mailman/listinfo/python-list
Default Tkinter Structure of a 640x480 PIL BMP File?
See Subject. Does it have a header, DIB, palette, and data section? What is the default depth? -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet Web Page: www.speckledwithstars.net/ -- http://mail.python.org/mailman/listinfo/python-list
Converting a PIL image object to a buffer
I'm trying to dump a snapshot of my application window to the clipboard. I can use ImageGrab in PIL to get the screen data into a PIL image object, which i have converted to a bitmap using ImageWin, but when I try to pass this to the clipboard using - win32clipboard.SetClipboardData(win32clipboard.CF_BITMAP, img) It fails, telling be that The object must support the buffer interface. How can I convert a PIL image into a buffer object? I can't find any clues. Help appreciated, Simon Hibbs -- http://mail.python.org/mailman/listinfo/python-list
Re: Converting a PIL image object to a buffer
Simon Hibbs wrote: I'm trying to dump a snapshot of my application window to the clipboard. I can use ImageGrab in PIL to get the screen data into a PIL image object, which i have converted to a bitmap using ImageWin, but when I try to pass this to the clipboard using - win32clipboard.SetClipboardData(win32clipboard.CF_BITMAP, img) It fails, telling be that The object must support the buffer interface. How can I convert a PIL image into a buffer object? I can't find any clues. PIL images have a tostring method that returns a string containing all the pixel data. Would that help you to either create the needed buffer? Or perhaps you could by-pass the need for a buffer, and just use the byte string. Gary Herron Help appreciated, Simon Hibbs -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Converting a PIL image object to a buffer
On 1 Apr, 21:43, Gary Herron gher...@islandtraining.com wrote: Simon Hibbs wrote: I'm trying to dump a snapshot of my application window to the clipboard. I can use ImageGrab in PIL to get the screen data into a PIL image object, which i have converted to a bitmap using ImageWin, but when I try to pass this to the clipboard using - win32clipboard.SetClipboardData(win32clipboard.CF_BITMAP, img) It fails, telling be that The object must support the buffer interface. How can I convert a PIL image into a buffer object? I can't find any clues. PIL images have a tostring method that returns a string containing all the pixel data. Would that help you to either create the needed buffer? Or perhaps you could by-pass the need for a buffer, and just use the byte string. If I use tostring I get a string which I can put on the clipboard, but it isn't any kind of image. I can make a PIL image from the string but them I'm back to square one again. I suppse I could save the image object to a real file and then send that to the clipboard, but that seems wasteful and I'd have to worry about what to call it and where to put it. Much neater if I could just create it in memory somehow. Simon Hibbs -- http://mail.python.org/mailman/listinfo/python-list
Re: Python Imaging Library (PIL): create PDF from scratch
Like David said now i used PIL for individual images and reportlab to generate a pdf. Thanks for your advices :) -- http://mail.python.org/mailman/listinfo/python-list
Python Imaging Library (PIL): create PDF from scratch
Hi, I have some scan generated by SANE and i would like to do some transformation (like crop, brightness and resize) and finaly put all those images in PDF file. With PIL i can do all the transformations that i want. But i don't know how i can create from scratch a PDF. I'm not even sure that PIL is the right library for that. Any help/informations will be appreciate -- http://mail.python.org/mailman/listinfo/python-list
Re: Python Imaging Library (PIL): create PDF from scratch
zelegolas wrote: Hi, I have some scan generated by SANE and i would like to do some transformation (like crop, brightness and resize) and finaly put all those images in PDF file. With PIL i can do all the transformations that i want. But i don't know how i can create from scratch a PDF. I'm not even sure that PIL is the right library for that. PIL is great for graphics, but I use ReportLab's open source stuff (see www.reportlab.org) for creating PDFs - that's what it was designed for, and you can easily incorporate your graphics. regards Steve -- Steve Holden+1 571 484 6266 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Python Imaging Library (PIL): create PDF from scratch
zelegolas wrote: Hi, I have some scan generated by SANE and i would like to do some transformation (like crop, brightness and resize) and finaly put all those images in PDF file. With PIL i can do all the transformations that i want. But i don't know how i can create from scratch a PDF. I'm not even sure that PIL is the right library for that. Any help/informations will be appreciate Use PIL to fiddle the individual images, and reportlab to build a pdf from the (now tweaked) images. --Scott David Daniels scott.dani...@acm.org -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL install driving me mad! With solution!
bleah jo...@ph...arizona.edu wrote: I'm trying to get PIL 1.16 installed on a SUSE SLES10 system, and cannot, for the life of me, get the thing to compile with jpeg support. The libjpeg-devel libraries are installed, and are present in /usr/lib JUST WHERE SPECIFIED in the setup.py file, and the jpeglib.h incliude file is present JUST WHERE SPECIFIED in the setup.py file. The build process proceeds without errors, yet selftest.py fails with the error: tonic:~/html2pdf_sources/Imaging-1.1.6 # python selftest.py * Failure in example: _info(Image.open(Images/lena.jpg)) This is the problem. Lena with the feathered hat is a shy girl, and she does not allow just anybody to look at her. :-) - Hendrik -- http://mail.python.org/mailman/listinfo/python-list
PIL install driving me mad! With solution!
I'm trying to get PIL 1.16 installed on a SUSE SLES10 system, and cannot, for the life of me, get the thing to compile with jpeg support. The libjpeg-devel libraries are installed, and are present in /usr/lib JUST WHERE SPECIFIED in the setup.py file, and the jpeglib.h incliude file is present JUST WHERE SPECIFIED in the setup.py file. The build process proceeds without errors, yet selftest.py fails with the error: tonic:~/html2pdf_sources/Imaging-1.1.6 # 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 module File ./selftest.py, line 22, 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 375, in _getdecoder raise IOError(decoder %s not available % decoder_name) IOError: decoder jpeg not available 1 items had failures: 1 of 57 in selftest.testimage ***Test Failed*** 1 failures. *** 1 tests of 57 failed. Again and again and again. I found this post http://blog.tlensing.org/2008/12/04/kill-pil-–-the-python-imaging-library-headache which provided the solution. When you run selftest.py in the Imaging-1.1.6 directory, python finds the PIL.pth and PIL file and directory, respectively and uses those instead of the properly compiled versions in the python directories. So PIL is installed, it IS working perfectly, it's selftest.py that's failing... -- http://mail.python.org/mailman/listinfo/python-list
Re: Drawing and Displaying an Image with PIL
r wrote: Change this line: draw.line((0,0),(20,140), fill=128) To This: draw.line((0,0, 20,140), fill=128) And you should be good to go. Like you said, if you need to combine 2 tuples you can do: (1,2)+(3,4) Yes, that's true, but the big question is how to see the final image? Either one employees another module or writes the file into a folder, then displays it with a paint program? -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet Web Page: www.speckledwithstars.net/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Drawing and Displaying an Image with PIL
W. eWatson wrote: r wrote: Change this line: draw.line((0,0),(20,140), fill=128) To This: draw.line((0,0, 20,140), fill=128) And you should be good to go. Like you said, if you need to combine 2 tuples you can do: (1,2)+(3,4) Yes, that's true, but the big question is how to see the final image? Either one employees another module or writes the file into a folder, then displays it with a paint program? For debugging purposes you can just invoke the show() method im = Image.open(...) # modify image im.show() If you want to integrate the image into your own Tkinter program -- that is explained here: http://effbot.org/tkinterbook/photoimage.htm Following these instruction you code might become import Tkinter as tk import Image import ImageTk import ImageDraw import sys filename = sys.argv[1] im = Image.open(filename) draw = ImageDraw.Draw(im) draw.line((0, 0) + im.size, fill=128) draw.line(((0,0),(20,140)), fill=128) root = tk.Tk() pi = ImageTk.PhotoImage(im) label = tk.Label(root, image=pi) label.pack() root.mainloop() Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: Drawing and Displaying an Image with PIL
On 2009-01-28, W. eWatson notval...@sbcglobal.net wrote: Yes, that's true, but the big question is how to see the final image? Either one employees another module or writes the file into a folder, then displays it with a paint program? Does im.show() not work? -Bill -- Sattre Press Tales of War http://sattre-press.com/ by Lord Dunsany i...@sattre-press.com http://sattre-press.com/tow.html -- http://mail.python.org/mailman/listinfo/python-list
Windows PIL installer question
Is there any way to run the PIL installer from the command line on Windows in 'silent' mode, without displaying the install screens or requiring user interaction? -- http://mail.python.org/mailman/listinfo/python-list
Re: Windows PIL installer question
En Wed, 28 Jan 2009 15:07:54 -0200, cjl cjl...@gmail.com escribió: Is there any way to run the PIL installer from the command line on Windows in 'silent' mode, without displaying the install screens or requiring user interaction? Is it a .msi? msiexec /i filename.msi /quiet /log path\to\logfile.log -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: Drawing and Displaying an Image with PIL
Peter Otten wrote: W. eWatson wrote: r wrote: Change this line: draw.line((0,0),(20,140), fill=128) To This: draw.line((0,0, 20,140), fill=128) And you should be good to go. Like you said, if you need to combine 2 tuples you can do: (1,2)+(3,4) Yes, that's true, but the big question is how to see the final image? Either one employees another module or writes the file into a folder, then displays it with a paint program? For debugging purposes you can just invoke the show() method im = Image.open(...) # modify image im.show() If you want to integrate the image into your own Tkinter program -- that is explained here: http://effbot.org/tkinterbook/photoimage.htm Following these instruction you code might become import Tkinter as tk import Image import ImageTk import ImageDraw import sys filename = sys.argv[1] im = Image.open(filename) draw = ImageDraw.Draw(im) draw.line((0, 0) + im.size, fill=128) draw.line(((0,0),(20,140)), fill=128) root = tk.Tk() pi = ImageTk.PhotoImage(im) label = tk.Label(root, image=pi) label.pack() root.mainloop() Peter My initial quest was to do it in PIL. That seems impossible, and the way out is Tkinter. I'm not yet savvy enough with Pythons graphics. I was definitely leaning towards PhotoImage as the way out. What module is show in? Repairing my (0,0), ... to (0,0)+, and. replacing arg with ImageOPen, produces a correct solution. My NM Tech pdf misses the boat on PhotoImage. I've seen your reference before, but never looked at PhotoImage. I'll bookmark it. I sure wish it was in pdf format. Thanks. -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet Web Page: www.speckledwithstars.net/ -- http://mail.python.org/mailman/listinfo/python-list
Drawing and Displaying an Image with PIL
Here's my program: # fun and games import Image, ImageDraw im = Image.open(wagon.tif) # it exists in the same Win XP # folder as the program draw = ImageDraw.Draw(im) draw.line((0, 0) + im.size, fill=128) draw.line((0,0),(20,140), fill=128) # How show this final image on a display? root.mainloop() It has two problems. One is it crashes with: draw.line((0,0),(20,140), fill=128) TypeError: line() got multiple values for keyword argument 'fill' Secondly, it has no way to display the image drawn on. Is it possible, or do I have to pass the image off to another module's methods? -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet Web Page: www.speckledwithstars.net/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Drawing and Displaying an Image with PIL
On Jan 27, 9:15 pm, W. eWatson notval...@sbcglobal.net wrote: Here's my program: # fun and games import Image, ImageDraw im = Image.open(wagon.tif) # it exists in the same Win XP # folder as the program draw = ImageDraw.Draw(im) draw.line((0, 0) + im.size, fill=128) draw.line((0,0),(20,140), fill=128) # How show this final image on a display? root.mainloop() It has two problems. One is it crashes with: draw.line((0,0),(20,140), fill=128) TypeError: line() got multiple values for keyword argument 'fill' Secondly, it has no way to display the image drawn on. Is it possible, or do I have to pass the image off to another module's methods? -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet Web Page: www.speckledwithstars.net/ I have not tried your code but i think you need to put your coodinates in one tuple. Here is an example from the docs Example Example: Draw a Grey Cross Over an Image import Image, ImageDraw im = Image.open(lena.pgm) draw = ImageDraw.Draw(im) draw.line((0, 0) + im.size, fill=128) draw.line((0, im.size[1], im.size[0], 0), fill=128) del draw # write to stdout im.save(sys.stdout, PNG) Hope that helps -- http://mail.python.org/mailman/listinfo/python-list
Re: Drawing and Displaying an Image with PIL
r wrote: On Jan 27, 9:15 pm, W. eWatson notval...@sbcglobal.net wrote: Here's my program: # fun and games import Image, ImageDraw im = Image.open(wagon.tif) # it exists in the same Win XP # folder as the program draw = ImageDraw.Draw(im) draw.line((0, 0) + im.size, fill=128) draw.line((0,0),(20,140), fill=128) # How show this final image on a display? root.mainloop() It has two problems. One is it crashes with: draw.line((0,0),(20,140), fill=128) TypeError: line() got multiple values for keyword argument 'fill' Secondly, it has no way to display the image drawn on. Is it possible, or do I have to pass the image off to another module's methods? -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet Web Page: www.speckledwithstars.net/ I have not tried your code but i think you need to put your coodinates in one tuple. Here is an example from the docs Example Example: Draw a Grey Cross Over an Image import Image, ImageDraw im = Image.open(lena.pgm) draw = ImageDraw.Draw(im) draw.line((0, 0) + im.size, fill=128) draw.line((0, im.size[1], im.size[0], 0), fill=128) del draw # write to stdout im.save(sys.stdout, PNG) Hope that helps That's pretty much the code I used. In fact, I borrowed it from the pdf. I just tried it, and it output %PNG. I'd like to see this displayed in a window. If the fine had written properly, I could see whether it really drew the lines. It did not fail on the same draw stmts in my program. I see my problem, , instead of + between the tuples. I thought I'd seen another example where the 2-d tuples could be separated. I see a ImageFile module, but it's not for writing image files simply. -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7 N, 121° 2' 32 W, 2700 feet Web Page: www.speckledwithstars.net/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Drawing and Displaying an Image with PIL
Change this line: draw.line((0,0),(20,140), fill=128) To This: draw.line((0,0, 20,140), fill=128) And you should be good to go. Like you said, if you need to combine 2 tuples you can do: (1,2)+(3,4) -- http://mail.python.org/mailman/listinfo/python-list
Re: using PIL for PCA analysis
if i want to do an array of PIL image data i can use img=Image.open(myimg.jpg) .convert(L) pixelarray=img.getdata() convert(L) is a good way to make images grayscale. An option to using getdata() is to try numpy's array: pixelarray = numpy.array(img) this gives lots of possibilities for working with the images numerically, like for PCA. (see example code in the link below) thus i guess i can build a matrix of a set of images is there something wrong in the way i do this above?may be i can use that to find covariance matrix for the set of images? I wrote a short script for doing PCA on images using python, with some explanations and example code http://jesolem.blogspot.com/2009/01/pca-for-images-using-python.html here . Could be of help to you guys. -- View this message in context: http://www.nabble.com/using-PIL-for-PCA-analysis-tp15606311p21432675.html Sent from the Python - python-list mailing list archive at Nabble.com. -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL on 3.x?
Does anyone know if PIL will be ported to the 3.x branch? Actually, Guilherme Polo has ported PIL 1.1.6 to python 3.0: http://mail.python.org/pipermail/image-sig/2008-December/005338.html Cheers, Daniel -- Psss, psss, put it down! - http://www.cafepress.com/putitdown -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL - font kerning
On Dec 23, 9:51 pm, Ivan Illarionov ivan.illario...@gmail.com wrote:
On Dec 23, 11:22 pm, Ivan Illarionov ivan.illario...@gmail.com
wrote:
On 23 дек, 16:44, carsn carsten.kr...@gmail.com wrote:
Hey all,
anybody know, if there´s a way to specify the kerning of a font, when
you draw text withPIL?
I´d like to achieve the same effect that you get, when you set a
negative kerning in Gimp/Photshop - ie. reduce the spacing between
glyphs.
CanPILdo that or do I use another lib for that?
Thx for any pointers some nice xmas days to U all!
carsten
No.PILcan't do that. I suggest combination of cairo/pango/pangocairo
(pycairo and pygtk packages).
Ivan
I found a little helper function that does what you want (and more)
import cairo
import pango
import pangocairo
def draw_text(surface, context, text, font=sans 14, position=None,
color=None,
box_width=None,
alignment=pango.ALIGN_CENTER,
line_spacing=None, letter_spacing=None,
extra_kerning=None):
if color is None:
color = (0.0, 0.0, 0.0)
context.set_source_rgb(*color)
pc = pangocairo.CairoContext(context)
layout = pc.create_layout()
layout.set_text(text)
layout.set_font_description(pango.FontDescription(font))
if box_width: layout.set_width(box_width)
layout.set_alignment(alignment)
if line_spacing: layout.set_spacing(spacing)
alist = pango.AttrList()
if letter_spacing:
alist.insert(pango.AttrLetterSpacing(letter_spacing, 0, len
(text)))
if extra_kerning:
for pos, kern in extra_kerning.iteritems():
alist.insert(pango.AttrLetterSpacing(kern, pos, pos
+1))
layout.set_attributes(alist)
if position is None:
width, height = surface.get_width(), surface.get_height()
w, h = layout.get_pixel_size()
position = (width/2.0 - w/2.0, height/2.0 - h/2.0)
context.move_to(*position)
pc.show_layout(layout)
And example usage:
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
context = cairo.Context(surface)
draw_text(surface, context, 'Hello world!',
font=sans 52, color=(.25,.28,.33),
letter_spacing=-6000,
extra_kerning={0:-9000, 1:-1000, 6:6000, 7:-15000, 8:5000,
9:-7000})
surface.write_to_png(hello.png)
--
Ivan
Works great, thanks a lot!!
--
http://mail.python.org/mailman/listinfo/python-list
PIL - font kerning
Hey all, anybody know, if there´s a way to specify the kerning of a font, when you draw text with PIL? I´d like to achieve the same effect that you get, when you set a negative kerning in Gimp/Photshop - ie. reduce the spacing between glyphs. Can PIL do that or do I use another lib for that? Thx for any pointers some nice xmas days to U all! carsten -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL - font kerning
On 23 дек, 16:44, carsn carsten.kr...@gmail.com wrote: Hey all, anybody know, if there´s a way to specify the kerning of a font, when you draw text with PIL? I´d like to achieve the same effect that you get, when you set a negative kerning in Gimp/Photshop - ie. reduce the spacing between glyphs. Can PIL do that or do I use another lib for that? Thx for any pointers some nice xmas days to U all! carsten No. PIL can't do that. I suggest combination of cairo/pango/pangocairo (pycairo and pygtk packages). Ivan -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL - font kerning
On Dec 23, 11:22 pm, Ivan Illarionov ivan.illario...@gmail.com
wrote:
On 23 дек, 16:44, carsn carsten.kr...@gmail.com wrote:
Hey all,
anybody know, if there´s a way to specify the kerning of a font, when
you draw text with PIL?
I´d like to achieve the same effect that you get, when you set a
negative kerning in Gimp/Photshop - ie. reduce the spacing between
glyphs.
Can PIL do that or do I use another lib for that?
Thx for any pointers some nice xmas days to U all!
carsten
No. PIL can't do that. I suggest combination of cairo/pango/pangocairo
(pycairo and pygtk packages).
Ivan
I found a little helper function that does what you want (and more)
import cairo
import pango
import pangocairo
def draw_text(surface, context, text, font=sans 14, position=None,
color=None,
box_width=None,
alignment=pango.ALIGN_CENTER,
line_spacing=None, letter_spacing=None,
extra_kerning=None):
if color is None:
color = (0.0, 0.0, 0.0)
context.set_source_rgb(*color)
pc = pangocairo.CairoContext(context)
layout = pc.create_layout()
layout.set_text(text)
layout.set_font_description(pango.FontDescription(font))
if box_width: layout.set_width(box_width)
layout.set_alignment(alignment)
if line_spacing: layout.set_spacing(spacing)
alist = pango.AttrList()
if letter_spacing:
alist.insert(pango.AttrLetterSpacing(letter_spacing, 0, len
(text)))
if extra_kerning:
for pos, kern in extra_kerning.iteritems():
alist.insert(pango.AttrLetterSpacing(kern, pos, pos
+1))
layout.set_attributes(alist)
if position is None:
width, height = surface.get_width(), surface.get_height()
w, h = layout.get_pixel_size()
position = (width/2.0 - w/2.0, height/2.0 - h/2.0)
context.move_to(*position)
pc.show_layout(layout)
And example usage:
surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
context = cairo.Context(surface)
draw_text(surface, context, 'Hello world!',
font=sans 52, color=(.25,.28,.33),
letter_spacing=-6000,
extra_kerning={0:-9000, 1:-1000, 6:6000, 7:-15000, 8:5000,
9:-7000})
surface.write_to_png(hello.png)
--
Ivan
--
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Re: PIL on 3.x?
Méta-MCI (MVP) schrieb: Hi! This info is interesting for many people. IMO, it's a good idea to write the question in this newsgroup. Which only makes sense if the author of PIL reads it. Which he seems not to (or at least doesn't answer here, as he used to). Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL on 3.x?
Hi! Fredrik Lundh (Pythonware ; the author of PIL (and ElementTree, and many other things)) had, in the past, often give answers. To me, like to others people. @-salutations -- Michel Claveau -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL on 3.x?
Does anyone know if PIL will be ported to the 3.x branch? Have you considered e-mail to the author? No, I haven't because in my experience open source software authors prefer to keep discussion of their software on mailing lists, forums, etc, where others can benefit from the answers too. Cheers, Daniel -- Psss, psss, put it down! - http://www.cafepress.com/putitdown -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL on 3.x?
On Dec 21, 12:32 pm, Daniel Fetchinson fetchin...@googlemail.com wrote: Does anyone know if PIL will be ported to the 3.x branch? Have you considered e-mail to the author? No, I haven't because in my experience open source software authors prefer to keep discussion of their software on mailing lists, forums, etc, where others can benefit from the answers too. True, so try a forum where the author has been active within the last week: http://mail.python.org/mailman/listinfo/image-sig -- http://mail.python.org/mailman/listinfo/python-list
PIL on 3.x?
Does anyone know if PIL will be ported to the 3.x branch? Cheers, Daniel -- Psss, psss, put it down! - http://www.cafepress.com/putitdown -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL on 3.x?
On Dec 20, 6:55 am, Daniel Fetchinson fetchin...@googlemail.com wrote: Does anyone know if PIL will be ported to the 3.x branch? Have you considered e-mail to the author? -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL on 3.x?
Hi! This info is interesting for many people. IMO, it's a good idea to write the question in this newsgroup. @-salutations -- Michel Claveau -- http://mail.python.org/mailman/listinfo/python-list
Re: something else instead of PIL?
On Dec 17, 3:48 pm, Reimar Bauer r.ba...@fz-juelich.de wrote: Hi what has happened to PIL? No updates since two years. Or does one know an alternative lib for resizing images? cheers Reimar I have found the FreeImage library with the Python bindings quite workable. I work with multi-page TIF images and this seemed to be the best option. The FreeImage library seems to be actively maintained too (Last release in July 08 with updates to many of the image processing plug- ins). The python bindings took me a bit to understand as they try to emulate PIL, however they are implemented using ctypes, so you can change/manage yourself if needed. I found working directly with the functions exported from the .dll the best option and gave the best performance. Freeimage site: http://freeimage.sourceforge.net/ Python bindings: http://freeimagepy.sourceforge.net/ Hope that helps. Good luck. Working with images/graphics can make my brain hurt sometimes. g. -- http://mail.python.org/mailman/listinfo/python-list
Re: something else instead of PIL?
s...@pobox.com schrieb: Reimar Hi what has happened to PIL? No updates since two years. It's well-written, stable code. As far as I know it does what people want (at least it's done everything I've needed when I've used it). Why should it matter that there hasn't been an official release in two years? I am interested to get some new features added e.g. some special conversion routines for colorblind people. http://scien.stanford.edu/class/psych221/projects/05/ofidaner/colorblindness_project.htm How can that be archieved? cheers Reimar -- http://mail.python.org/mailman/listinfo/python-list
Re: something else instead of PIL?
imageguy schrieb: On Dec 17, 3:48 pm, Reimar Bauer r.ba...@fz-juelich.de wrote: Hi what has happened to PIL? No updates since two years. Or does one know an alternative lib for resizing images? cheers Reimar I have found the FreeImage library with the Python bindings quite workable. I work with multi-page TIF images and this seemed to be the best option. The FreeImage library seems to be actively maintained too (Last release in July 08 with updates to many of the image processing plug- ins). The python bindings took me a bit to understand as they try to emulate PIL, however they are implemented using ctypes, so you can change/manage yourself if needed. I found working directly with the functions exported from the .dll the best option and gave the best performance. Freeimage site: http://freeimage.sourceforge.net/ Python bindings: http://freeimagepy.sourceforge.net/ Hope that helps. Good luck. Working with images/graphics can make my brain hurt sometimes. g. thanks! Reimar -- http://mail.python.org/mailman/listinfo/python-list
Re: something else instead of PIL?
Reimar I am interested to get some new features added e.g. some special Reimar conversion routines for colorblind people. Reimar http://scien.stanford.edu/class/psych221/projects/05/ofidaner/colorblindness_project.htm Reimar How can that be archieved? Contact Fredrik Lundh? http://effbot.org/ Skip -- http://mail.python.org/mailman/listinfo/python-list
something else instead of PIL?
Hi what has happened to PIL? No updates since two years. Or does one know an alternative lib for resizing images? cheers Reimar -- http://mail.python.org/mailman/listinfo/python-list
Re: something else instead of PIL?
Reimar Hi what has happened to PIL? No updates since two years. It's well-written, stable code. As far as I know it does what people want (at least it's done everything I've needed when I've used it). Why should it matter that there hasn't been an official release in two years? -- Skip Montanaro - s...@pobox.com - http://smontanaro.dyndns.org/ -- http://mail.python.org/mailman/listinfo/python-list
Re: something else instead of PIL?
On Wed, Dec 17, 2008 at 12:48 PM, Reimar Bauer r.ba...@fz-juelich.de wrote: Hi what has happened to PIL? No updates since two years. The Python Imaging Library is still current; I guess they just haven't found any new bugs or seen fit to add new functionality in a while, though I presume they'll start working on a Python 3.0 port eventually. If you don't like PIL, there's always the (much less popular) Python bindings to ImageMagick: http://www.imagemagick.org/script/api.php#python Cheers, Chris -- Follow the path of the Iguana... http://rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
Re: something else instead of PIL?
what has happened to PIL? No updates since two years. The Python Imaging Library is still current; I guess they just haven't found any new bugs or seen fit to add new functionality in a while, though I presume they'll start working on a Python 3.0 port eventually. That's actually an interesting question. Does anybody know if PIL is being ported to 3.0? Are there such plans? Maybe even code? Cheers, Daniel -- Psss, psss, put it down! - http://www.cafepress.com/putitdown -- http://mail.python.org/mailman/listinfo/python-list
PIL (python imaging library) or Mathematics help both appreciated
well, here is the background. I have images of objects (cars,
clothes, ...) with a white background in most of the cases
I have to build a function with PIL that takes away the background.
it seems simple, just look for the white and make it transparent but
the problem is in reality much more complex:
1) the image could contain some white inside the object (e.g. shoes
with some white in between straps)
2) there are often pixels that are part of the background but have a
colour different from white which leaves a few points throughout the
image
to be more concrete:
here is a bit of code of what i've made so far
def transparent(im):
#i take all the images of the pixel
pixels = list(im.getdata())
#i convert the image into png
if im.mode != 'RGBA':
im = im.convert('RGBA')
#i create a new image with the same dimension with one unique layer
for transparency
width , height = im.size
gradient = Image.new('L', (width,height))
white = { 'r' : 255 , 'g' : 255, 'b' : 255 }
#i browse the pixels of the image
for y in range(height):
yp = y * width
for x in range(width):
xy = yp + x
pix = pixels[xy]
#the color of the current pixel
c = { 'r' : pix[0] , 'g' : pix[1], 'b' : pix[2] }
#i calculate the vectorial distance between the current color and
the color white
d = sqrt( pow((c['r']- white['r'] ),2) + pow((c['g'] - white['g']),
2) + pow((c['b'] - white['b']),2) )
if d 5 :
#if it is more or less white, i make the pixel transparent
gradient.putpixel((x,y) , 0 )
else:
#otherwise i show the color
gradient.putpixel((x,y) , 255)
after the layer of transparency of the new image is done, the
algorithm works generally fine except there are some small but
noticeable quality issues. i am just asking myself if there is maybe
not a better approach either in terms of algorithms or even
mathematics or maybe refine the algorithm that i've create. anything
would help.
i know the function will not be 100% precise but I just hope the image
can be presentable and that the image is homogenous.
thank you in advance for your help.
--
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Re: PIL (python imaging library) or Mathematics help both appreciated
Well not much maths in my answers but... On 24 Nov, 08:52, amine [EMAIL PROTECTED] wrote: well, here is the background. I have images of objects (cars, clothes, ...) with a white background in most of the cases I have to build a function with PIL that takes away the background. it seems simple, just look for the white and make it transparent but the problem is in reality much more complex: 1) the image could contain some white inside the object (e.g. shoes with some white in between straps) A simple solution would be to start with a transparent pixel in the top left corner say, then scan the image from left to right (line by line): if the current pixel is white (or pale enough) and has a transparent pixel above it or to its left, then make it transparent. I remember when I was a kid playing graphical adventure games on my C64, you could actually see this happening as the picture was being built on the screen (as a floppy could only contain around 160k, you couldn't store bitmaps unless you had very few pictures). 2) there are often pixels that are part of the background but have a colour different from white which leaves a few points throughout the image What you're doing is fine I think: calculate the distance to white. HTH -- Arnaud -- http://mail.python.org/mailman/listinfo/python-list
