Face regocnition in a webcam with opencv3.0 and Python3.4


Here are the code. A notebook is also available. cv2.VideoCapture doesn't work on the iPyton notebookso I needed to create .py file and run it on a terminal.

import cv2
cascPath = r'/home/watanabe/opencv/data/haarcascades/haarcascade_frontalface_default.xml'
faceCascade = cv2.CascadeClassifier(cascPath)
video_capture = cv2.VideoCapture(0)

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

        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
    else:
        break

# When everything is done, release the capture
video_capture.release()
cv2.destroyAllWindows()



Here is a screenshot.


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