new_contents: import sys
  sys.path.append("../perception/")
  import perception
  import cv2
  import signal
  
  stopTest = False
  def stopsigHandler(signo, frame):
    stopTest = True
    sys.exit(0)
  
  if __name__ == "__main__":
    signal.signal(signal.SIGINT, stopsigHandler)
    print "Press Ctrl+C to stop"
  
    cam = cv2.VideoCapture(0)
    objdetect = ObjectDetector()
    objdetect.setObjects([0, 1, 2]) # id's of the chilitags
  
    while not stopTest:
      img = cam.read()
      objdetect.observe(img)
      print objdetect.detect()
  
subject: add tester for the object detector