cam.py

from facedetector import FaceDetector
import imutils
import argparse
import cv2

ap = argparse.ArgumentParser()
ap.add_argument("-f", "--face", required=True,
	help="path where the image cascade is")
ap.add_argument("-v", "--video",
	help="path where the video resides(optional)")
args = vars(ap.parse_args())

fd = FaceDetector(args["face"])

if not args.get("video", False):
	camera = cv2.VideoCapture(0)

else:
	camera = cv2.VideoCapture(args["video"])

while True:
	(grabbed, frame) = camera.read()

	if args.get("video") and not grabbed:
		break

	frame = imutils.resize(frame, width=300)
	gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

faceRects = fd.detect(gray, scaleFactor=1.1, minNeighbors=5, minSize=(30,30))
frameClone = frame.copy()

for (fX, fY, fW, fH) in faceRects:
	cv2.rectangle(frameClone, (fX,fY), (fX+fW,fY+fH),(0,255,0),2)

	cv2.imshow("Face",frameClone)

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

camera.release()
cv2.destroyAllWindows()