View source for Python+OpenCV+Windows

[[Category:Robootika]]

'''What do you need?'''
-----
*Python 2.7  (I recommend [https://sourceforge.net/projects/winpython/files/WinPython_2.7/2.7.10.3/ THIS]) => because it has many packages preinstalled.
*OpenCV 2.4.11 (You can get this from [https://sourceforge.net/projects/opencvlibrary/files/opencv-win/2.4.11/opencv-2.4.11.exe/download here])
*Windows (tested on Windows10, probably works elsewhere)

'''What do I do now?'''
-----
*Install all the .EXE files ( this version of python takes long time compared to the original one, make some coffee meanwhile)
*Navigate to these folders -> ''opencv\build\python\2.7''(select your OS folder ( x64 for 64bit, x86 for 32bit)) & ''WinPython-64bit-2.7.10.3\python-2.7.10.amd64''
*CTRL + C (or COPY) the file called ''cv2.pyd''
*Paste the file into folders '''DLLs''' and '''Lib\site-packages''' 


'''How do I set up PyCharm to use my new Interpreter?'''
-----
*Open PyCharm and create new project
*Select ''' File->Settings->Project->Project Interpreter-> GEAR ICON -> Add Local -> Navigate to Winpython\python\python.exe and select it'''

[[File:PyCharmSettings.png]]


'''How do test if everything works?'''
*Copy following code:

<source lang="python">import cv2
import sys

cascPath = sys.argv[1]
faceCascade = cv2.CascadeClassifier(cascPath)

video_capture = cv2.VideoCapture(0)

while True:
    # Capture frame-by-frame
    ret, frame = video_capture.read()

    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

    faces = faceCascade.detectMultiScale(
        gray,
        scaleFactor=1.1,
        minNeighbors=5,
        minSize=(30, 30),
        flags=cv2.cv.CV_HAAR_SCALE_IMAGE
    )

    # Draw a rectangle around the faces
    for (x, y, w, h) in faces:
        cv2.rectangle(frame, (x, y), (x+w, y+h), (0, 255, 0), 2)

    # Display the resulting frame
    cv2.imshow('Video', frame)

    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

# When everything is done, release the capture
video_capture.release()
cv2.destroyAllWindows() </source>


*Now head to the site [https://raw.githubusercontent.com/shantnu/Webcam-Face-Detect/master/haarcascade_frontalface_default.xml HERE]
*Copy this into the same folder of your new project
*Change this line of your code to direct towards XML file
<source lang="python">cascPath = LinkToFile.xml</source>
*For example in my case it is:
<source lang="python">cascPath = "face.xml"</source>