转载：Setup OpenCV for Python in Windows

全文转自 http://luugiathuy.com/2011/02/setup-opencv-for-python/

Setup OpenCV for Python in Windows

I have always struggled when trying to set up OpenCV for Python before. So I decide to write this post to help myself in the future and share with you =). My setup is for OpenCV 2.2 but I think you can apply for any version of OpenCV.

Step 1: Download and install Python 2.7 from http://www.python.org/getit/releases/2.7.2/. You need to install the 32bit version of Python. OpenCV currently does not work with Python 64bit.

Step 2: Download and install OpenCV 2.2 from http://sourceforge.net/projects/opencvlibrary/files/. Note that this version only supports Python 2.7 (not 3.x).

Step 3: Download and install NumPy 1.6.1 and SciPy 0.9.0 from: (you need to choose the files which support Python 2.7)

Step 4:Setup Windows Path in Environment Variables

  • Add “C:/Python2.7;C:/OpenCV2.2/bin” to PATH variable (You need to change the directory to where you install Python and OpenCV).
  • Create PYTHONPATH variable and put “C:/OpenCV2.2/Python2.7/Lib/site-packages” as value.

Update: For OpenCV2.3, There are two other options for this step:

  • As Kyle commented below, you can copy the content of folder “C:\opencv\build\python\2.7” (for opencv 2.2: C:/OpenCV2.2/Python2.7/Lib/site-packages) to folder “C:\Python27\Lib\site-packages“
  • OR, add these two lines at the beginning of your program:
    1 import sys
    2 sys.path.append("C:\OpenCV2.2\Python2.7\Lib\site-packages")

Yosh!!! You have finished setup OpenCV for Python in Windows. Open Python IDLE, create a new file, add the program below and run it:

1 import cv
2  
3 cv.NamedWindow("camera", 1)
4 capture = cv.CaptureFromCAM(0)
5  
6 while True:
7     img = cv.QueryFrame(capture)
8     cv.ShowImage("camera", img)
9     if cv.WaitKey(10) == 27:
10         break
11 cv.DestroyWindow("camera")

(This is the program to show your webcam)

UPDATE:

  1. OpenCV has just released version 2.3.1 which is more stable than 2.2 I think. You can download it here and try it (the setup is same as 2.2).
  2. About the black screen you encounter with the example, I think it’s because your camera is not supported. My camera works fine. You can find more information here.

 

posted @ 2011-11-14 19:56  yfkelly  阅读(409)  评论(0)    收藏  举报