OpenCV Python binding

[Sebastian Haase]

Hi,
I have been trying to get into OpenCV. Trying to ask some question
about its Python binding on the Yahoo OpenCV mailing list.
Without much success!

Is anyone here using OpenCV ? Any idea who might be currently
working on the OpenCV python binding ?

Thanks,
Sebastian Haase

[Sprindzuk Matvey]

http://opencv.willowgarage.com/documentation/python/cookbook.html

I hope it helpful

2012/3/28 Sebastian Haase <seb....@gmail.com>:

[Anthony Oliver]

I'm one of the core developers for a cross platform vision library called SimpleCV (http://www.simplecv.org).  It wrappers OpenCV amongst others.  If you are new to computer vision it is probably worth a look as we have a bunch of examples: http://examples.simplecv.org

---------------------------------

Anthony Oliver

[Niall Macquaide]

Hi,
The willow garage distro works for me on windows.
Niall.

--
Niall

[Sebastian Haase]

Thanks for all the replies !
The cookbook entry that was mentioned is using the (old) cv module -
not the new cv2 module.
IOW, even though the page locks really nice and inviting (sphinx) it
should probably mostly be considered obsolete !

I have done lots of image processing using numpy and scipy. As I
understand, the new cv2 is very(!) compatible with ndarray.
(while the older cv module is not. I.e. you always have to explicitly
convert back and forth using things like "numpy.asarray(mat)" and
"mat = cv.fromarray(a)")

I was then disconcerned that using cv2 still required to also use cv
(e.g. as cv2.cv) to access many non covered functions and many
constants.

Anthony, I saw simpleCV. It looks really nice ! But it does not (yet)
cover many of the algorithms I might want to use/try from openCV. I
was wondering, how simpleCV was interfacing with openCV - are you guys
feeding back some API improvements/cleanups to the openCV python
binding ... ?

Thanks,
Sebastian

[Sebastian Haase]

I found the word I was trying to using was "disconcerted" (not
"disconcerned")...
And an up-to-date sphinx documentation appears to be at
http://opencv.itseez.com/index.html

But how is itseez related to willowgarage - why is the documentation
at itseez not at willowgarage ?
http://itseez.com/index.php?page=profile
"""Itseez is a team of talented engineers focused on computer vision.
We are best known as the authors of the Open Source Computer Vision
Library ...."""

Furthermore http://itseez.com/index.php?page=mt lists "Vadim
Pisarevsky, Principal Engineer"
who - if I'm not mistaken - started the cv2 module ....

- Sebastian

[Anthony Oliver]

To be honest, that's how the whole SimpleCV project started. We got sick of their not being documentation, and were using other tools like ipython, etc, that we wanted integrated.  We have also written our own blob detection library because we got sick of compile errors and having to use cvblob as a dependency.

We have a long way to go, and for seasoned vision programmers SimpleCV is probably not the route you want to go, if you are beginner it's definitely easier to get up and running.  I wrote an article about the differences recently and I welcome any feedback:

http://simplecv.tumblr.com/post/19307835766/opencv-vs-matlab-vs-simplecv

I think people get the misconception we are trying to replace opencv, and by no means is the case. We label ourselves as a framework not as a library.  Think of us as a jquery or rails (ruby on rails) for vision. :)

---------------------------------

Anthony Oliver

Chief Technology Officer

http://www.ingenuitas.com

(906) 289-8169

ant...@ingenuitas.com

---------------------------------

[abidrahmank]

Hi,

I am using OpenCV-Python for last 1.5 years. There are a lot of
tutorials on internet on how to setup OpenCV-Python.

Anyway, this is how I setup OpenCV-Python in Windows :
http://opencvpython.blogspot.com/2012/05/install-opencv-in-windows-for-python.html

In linux, it is more easy, since they can be obtained from their
repos.

Regards,
ARK

[Sebastian Haase]

Hi ARK,

the problem is not having "any" python binding to OpenCV,
but using the *new* python binding for OpenCV 2.2+ which - for
example - is supposed to ease the interaction with NumPy

Cheers,
-Sebastian Haase

[klo]

New wiki link from opencv main page (http://code.opencv.org/projects/OpenCV/wiki/WikiStart) provides various up to date and beautiful to print PDF references.
Also same sphinx docs as in below quoted text

Maybe I'm missing something in this thread, but I hope this helps someone

On Thursday, March 29, 2012 10:47:12 AM UTC+2, sebhaase wrote:

I found the word I was trying to using was "disconcerted" (not
"disconcerned")...
And  an up-to-date  sphinx documentation appears to be at
http://opencv.itseez.com/index.html

...

[abidrahmank]

Hi,

OpenCV Python bindings are really good. It has Numpy support now, so pretty fast. If you want some tutorials to get started, visit here : www.opencvpython.blogspot.com

[Sebastian Haase]

great blog - thanks for posting the link.
I also think the python binding is (slowly?) getting more robust ....
(It still doesn't make sense having to write "cv2.cv.BoxPoints(rect)"
instead of "cv2.BoxPoints(rect)" !!)
Now its version 2.4.1 When I started this thread is was at 2.3

- Sebastian Haase

[jeanpatri...@gmail.com]

Thanks,

Jean-patrick


Le , abidrahmank <abidr...@gmail.com> a écrit :

[abid rahman]

It still doesn't make sense having to write "cv2.cv.BoxPoints(rect)" instead of "cv2.BoxPoints(rect)"

They are used to find the corners for a rotated rect. I think the developers have forgotten about this function. You can't find any documentation for this function anywhere.