title: OpenCV image cropping error
body: <p>I executed a program that reads all <code>.jpg</code> files from directory, performs face detection, crops the faces and saves them.</p>
  
  <p>The problem is that when run an official python program I am able to detect all faces, but it saves only few faces from every image.</p>
  
  <p>What am I doing wrong?</p>
  
  <pre><code>import cv2
  import sys
  import glob 
  
  cascPath = "haarcascade_frontalface_default.xml"
  
  # Create the haar cascade
  faceCascade = cv2.CascadeClassifier(cascPath)
  
  files=glob.glob("*.jpg")   
  for file in files:
  
      # Read the image
      image = cv2.imread(file)
      gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
  
      # Detect faces in the image
      faces = faceCascade.detectMultiScale(
          gray,
          scaleFactor=1.1,
          minNeighbors=5,
          minSize=(30, 30),
          flags = cv2.cv.CV_HAAR_SCALE_IMAGE
      )
  
      print "Found {0} faces!".format(len(faces))
  
      # Crop Padding
      left = 10
      right = 10
      top = 10
      bottom = 10
  
      # Draw a rectangle around the faces
      for (x, y, w, h) in faces:
          print x, y, w, h
  
          # Dubugging boxes
          # cv2.rectangle(image, (x, y), (x+w, y+h), (0, 255, 0), 2)
  
  
      image  = image[y-top:y+h+bottom, x-left:x+w+right]
  
      print "cropped_{1}{0}".format(str(file),str(x))
      cv2.imwrite("cropped_{1}_{0}".format(str(file),str(x)), image)  
  </code></pre>