def __init__(self):
   gopigo.set_speed(50)
   gopigo.stop
   self._face_detector = FaceDetector('/home/pi/opencv/data/haarcascades/haarcascade_frontalface_default.xml')
   self.sizes_calculated = False
   self.image_height = None
   self.image_width = None
   self.segment_detector = None
 def move(self, horiz_x):
   segment = self.segment_detector.segment(horiz_x)
   print(segment)
   if(segment == 'left'):
     gopigo.set_speed(10)
     gopigo.right_rot()
   elif(segment == 'right'):
     gopigo.set_speed(10)
     gopigo.left_rot()
   elif(segment == 'centre'):
     gopigo.set_speed(50)
     gopigo.fwd()
 def test_set_speed(self):
     gopigo.set_speed(50)