Install OpenCV on Windows 7 for Python 2.7

Question

I am desperately trying to get OpenCV to work on Windows 7. I download and install it and it does not work, I got

ImportError: No module named opencv 

when I tried to run one of the samples. I google my problem and got only random solutions that do not work. Can anyone advise me to install it or find out where I can get a clear installation guide for noob programming.

Answer 1

Like OpenCV 2.2.0, the package name for Python bindings is "cv". Old bindings with the name "opencv" are no longer supported. You may need to customize your code. See http://opencv.willowgarage.com/wiki/PythonInterface .

The official OpenCV installer does not install Python bindings in your Python directory. The OpenCV 2.2.0 installation directory must have a Python2.7 directory. Copy the entire Lib folder from OpenCV \ Python2.7 \ to C: \ Python27 \ and make sure your OpenCV \ bin directory is in the Windows DLL search path.

Alternatively, use the opencv-python installers at http://www.lfd.uci.edu/~gohlke/pythonlibs/#opencv .

Answer 2

I posted a very easy way to install OpenCV 2.4 for Python on Windows: Install OpenCV on Windows for Python

It is as simple as copying and pasting. I hope this will be useful for future viewers.

• Download Python, Numpy, OpenCV from your official sites.

• Extract OpenCV (will be extracted to the opencv folder)

• Copy .. \ opencv \ build \ python \ x86 \ 2.7 \ cv2.pyd

• Paste it into the folder C: \ Python27 \ Lib \ site-packages

• Open Python id or terminal and type

   >>> import cv2 

If there were no errors, everything is in order.

UPDATE (thanks dana for this info):

If you use the VideoCapture function, you must copy opencv_ffmpeg.dll to your path. See: stack overflow.squite

Answer 3

I posted an entry for installing OpenCV for Python on Windows: http://luugiathuy.com/2011/02/setup-opencv-for-python/

Hope this helps.

Answer 4

In fact, you can use x64 and Python 2.7. It just doesn't ship in the standard OpenCV installer. If you create libraries from source ( http://docs.opencv.org/trunk/doc/tutorials/introduction/windows_install/windows_install.html ), or you use opencv-python from cgohlke comment, it works fine.

Answer 5

One thing to mention. You must use Python version 2.7 for x86. OpenCV does not support Python x64. I hit my head a bit about it until I realized.

However, follow the steps in response of Abid Rahman K. And as Antimony said, you need to make "from cv2 import cv"

Answer 6

Install OpenCV on Windows 7 for Python 2.7

Answer 7

download opencv 2.2 version from https://sourceforge.net/projects/opencvlibrary/files/opencv-win/

install the package.

then copy cv2.pyd to C: / Python27 / lib / site-packeges.

and it should work:

 import cv2 

Answer 8

open a command prompt and run the following commands (assuming python 2.7):

 cd c:\Python27\scripts\ pip install opencv-python 

above works for me for python 2.7 on windows 10 64 bit