[Tutor] Image Processing

[Ashkan Rahmani]

Hello Eike,
Thank you for reply...

On Tue, Dec 18, 2012 at 1:09 AM, Eike Welk <eike.welk.lists1 at gmx.de> wrote:
> Hello Ashkan!
>
>
> On Saturday 15.12.2012 23:20:31 Ashkan Rahmani wrote:
>> I have developed some simple c++/qt/opencv application with face
>> detection functionality.
>> for some reasons I'm going to start again them and I wan to use python 3.
>> Unfortunately I found opencv not supported in python 3.
>> 1- as I'm new in python programming, is python 3 good choice for me?
>
> Python 2 and Python 3 are very similar. Use the latest version for which all
> libraries are available, possibly Python 2.7. The biggest difference between
> the languages for a beginner is:
>
> Python 2:
>   print "Hello World"
>
> Python 3:
>   print("Hello World")
>
> Furthermore Python is a very simple language. As you can already program in
> C++, it will take you two afternoons to learn Python. Use the tutorial from
> the official documentation:
>
> http://www.python.org/doc/
>
since I asked these questions in this mailing list, I decided to start
with 2.7, beside it, I installed 3.3 from source to port my learning
to latest version.
http://www.python.org/doc/
Yes, the best start point is this link!
>
>> 2- Opencv binding will be available for python 3?
>
> Ask the makers of Opencv. But I expect that they eventually will switch to
> Python 3, because Python 2 is not further developed.
>
> However not all Linux distributions have currently moved to Python 3: OpenSuse
> comes with Python 2.7 while Ubuntu has already moved to Python 3.
>
may be the best library/tools for industrial level image processing is
OpenCV, Nothing an compare to it.
>
>> 3- Is there any other image processing library for python 3?
>
> * Numpy is an N-dimensional array library. It is much more low level than
> Opencv, but can be used to prototype algorithms, that you later implement in
> C, C++, or Cython. Opencv images can directly be converted to Numpy arrays and
> vice versa.
>
> http://www.numpy.org/
> http://www.cython.org/
>
> * Scipy (which needs Numpy) contains some image analysis algorithms, but is
> still more low level than most of Opencv.
>
> http://docs.scipy.org/doc/scipy/reference/tutorial/ndimage.html
>
as you said, these are really low level. If I have to stick to python
maybe I use theme.

> * PIL is not really suitable for what you want. It is intended for loading and
> saving images, converting image formats, adjusting colors, and similar tasks.
> PIL images can also be directly converted to Opencv and Numpy images.
>
> http://www.pythonware.com/library/pil/handbook/index.htm
>
you are righ, it seems PIL is good for prepare input data befor processing.
>
>> 4- Basically python 3 or 2.7 is suitable for image processing?
>
> I think you should use Python 2.7 because Opencv is currently not ported to
> Python 3.
>
I goggled,  Beside python ruby have some good features, I don't know what to do,
Now I want to learn python, it's really great for develop.
>
> Eike.
>
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-- 
Best Regards,
Ashkan R < ashkan82r at gmail.com >