I did a test with wxPython 2.6.1 on Windows. I created a G4 TIFF
image that was 4400 x 3599 big, and the following code took under a
half second.
import wx
import time
def readImage(filename):
img = wx.Image(filename)
w = img.GetWidth()
h = img.GetHeight()
value = img.GetGreen(w
Robert Kern wrote:
> Marc 'BlackJack' Rintsch wrote:
>>It's fast enough to open the file and read the meta-data. The OP wants to
>>decode the actual pixels.
>
> Okay.
>
> In [12]: %time d = img.getdata()
> CPU times: user 0.31 s, sys: 1.43 s, total: 1.73 s
> Wall time: 6.19
And for comparison:
What do you mean by decode the pixels? If there's some image
processing that needs to be done, or if you want to view, brighten, or
print or something, then there are ways of doing it that will be as
fast as can be. If stepping through the pixels to do your own math
is what you want, then maybe
Marc 'BlackJack' Rintsch wrote:
> In <[EMAIL PROTECTED]>, Robert Kern
> wrote:
>
>>PyPK wrote:
>>
>>>One reason why I don't want to use PIL is it seems very slow for tiff
>>>images of very large sizes(2400x4800). So I am looking for a better
>>>tool than does the right job faster.
>>
>>This isn't
In <[EMAIL PROTECTED]>, Robert Kern
wrote:
> PyPK wrote:
>> One reason why I don't want to use PIL is it seems very slow for tiff
>> images of very large sizes(2400x4800). So I am looking for a better
>> tool than does the right job faster.
>
> This isn't fast enough?
>
> In [8]: %time img2 = Im
"PyPK" <[EMAIL PROTECTED]> wrote:
> I get a decoder error when i do a get pixel on the Image
>
> >>> im.getpixel((12,34))
>
> Traceback (most recent call last):
> File "", line 1, in ?
> File "Image.py", line 858, in getpixel
> self.load()
> File "/usr/local/lib/python2.4/site-packages/P
Hmm... that's unfortunate.
What platform are you on? If Windows, then I believe that PIL is
statically linked against LibTIFF and that particular libtiff wasn't
compiled with certain options (CCITT formats or something.) (in 1999
that was true, I found a post from Fred here:
http://mail.python.o
I get a decoder error when i do a get pixel on the Image
>>> im.getpixel((12,34))
Traceback (most recent call last):
File "", line 1, in ?
File "Image.py", line 858, in getpixel
self.load()
File "/usr/local/lib/python2.4/site-packages/PIL/ImageFile.py", line
180, in load
d = Image._
"PyPK" wrote:
> nothing fancy. I just want to be able to read a tiff image, get pixel
> values, write back to a tiff file.
so why doesn't PIL or ImageMagick work for you?
here's a minimal PIL version:
from PIL import Image
im = Image.open("myfile.tiff")
value = im.getpixel((12, 34)
When i try this i get this error:
import Image
>>> im = Image.open('image.tif')
>>> im.getpixel((10,19))
Traceback (most recent call last):
File "", line 1, in ?
File "Image.py", line 858, in getpixel
self.load()
File "/usr/local/lib/python2.4/site-packages/PIL/ImageFile.py", line
180, i
PyPK wrote:
> One reason why I don't want to use PIL is it seems very slow for tiff
> images of very large sizes(2400x4800). So I am looking for a better
> tool than does the right job faster.
This isn't fast enough?
In [8]: %time img2 = Image.open('foo.tiff')
CPU times: user 0.00 s, sys: 0.01 s,
One reason why I don't want to use PIL is it seems very slow for tiff
images of very large sizes(2400x4800). So I am looking for a better
tool than does the right job faster.
--
http://mail.python.org/mailman/listinfo/python-list
PyPK wrote:
> nothing fancy. I just want to be able to read a tiff image, get pixel
> values, write back to a tiff file.
[An aside: please quote the message you are replying to.]
Why doesn't the PIL satisfy this need? Or are you just collecting a list
of packages with this capability?
--
Rober
nothing fancy. I just want to be able to read a tiff image, get pixel
values, write back to a tiff file.
--
http://mail.python.org/mailman/listinfo/python-list
What sort of things do you want to do with the TIFFs? How
heavy-weight or light-weight are you interested in? For heavy-weight
there are:
- wxPython will do a bunch of tiff reading, and some image processing
http://www.wxpython.org
- GDAL
>(quoting Khalid Zuberi:)
>GDAL supports GeoTIFF and inc
Is there any package out there which handles Tiff Images other than PIL
or ImageMagic .
--
http://mail.python.org/mailman/listinfo/python-list
On 13 Jun 2005 07:55:04 -0700,
"PyPK" <[EMAIL PROTECTED]> wrote:
> Hi I am looking for a simple tiff Image reader/writer in python.Can
> anyone point me to the right one.
I don't know what your definition of "simple" is, but check out the
Python Imaging Library (PIL) at effbot.org.
Regards,
Dan
17 matches
Mail list logo
