facialDetection.py

import cv 
import sys
import os

image = cv.LoadImage(sys.argv[1])

storage = cv.CreateMemStorage()
haar=cv.Load('haarcascade_frontalface_default.xml')
detected = cv.HaarDetectObjects(image, haar, storage, 1.1, 2, cv.CV_HAAR_DO_CANNY_PRUNING, (20,20))

if detected:
  print "found one! %s", sys.argv[1]
  for ((x,y,w,h), z) in detected:
    cv.Rectangle(image, (x,y), (x+w,y+h), 255)
  basename = os.path.basename(sys.argv[1])
  cv.SaveImage(basename, image)