exception handling

main.py

@@ -41,20 +41,16 @@ def init():
 		
 	else: 
 		print('closing')
-	#else:
-		#print('Sensors not Satisfied')
-	
+
 def start( camera, face_cascade):
 	j = 0
 	rawCapture = PiRGBArray(camera)
-	#camera.framerate = 32
-	#rawCapture = PiRGBArray(camera, size=(640, 480))
-	#for frame in camera.capture_continuous(rawCapture, format="bgr", use_video_port=True):	
 	while 1:
-	#try:
-		#camera.capture('img.jpg')
-		#img = cv2.imread('img.jpg',1)
-		camera.capture(rawCapture, format="bgr")
+		try:
+			camera.capture(rawCapture, format="bgr")
+		except:
+			print('[ Error ] Can not capture image. Restarting..')
+			init()
 		img = rawCapture.array
 		gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
 		faces = face_cascade.detectMultiScale(gray, 1.2,5)
@@ -79,18 +75,16 @@ def start( camera, face_cascade):
 		if cv2.waitKey(1) & 0xFF == ord('q'):
 			cv2.destroyAllWindows()
 			break
-		
-		#except:
-			#print('[ Error ] Unexpected exception')
-			#print('Closing')
-			#break
 
 def recognize(image):
 	names = loadNames()
-	face_recognizer = cv2.createLBPHFaceRecognizer()
-	face_recognizer.load('faces/m')
-	img = image.copy()
-	label= face_recognizer.predict(img)
+	try:
+		face_recognizer = cv2.createLBPHFaceRecognizer()
+		face_recognizer.load('faces/m')
+		img = image.copy()
+		label= face_recognizer.predict(img)
+	except:
+		print('[ Error ] Error in Recognize() function')
 	if label[1] > 120:
 		return 'unknown'
 	else:
@@ -107,10 +101,12 @@ def OpenShifter():
 		print('[ Error ] Can not connect to Arduino at /dev/ttyUSB1 ..')
 
 def loadNames():
-	
-	with open("faces/names.json", "r") as read_file:
-		data = json.load(read_file)
-		return list(data)
+	try:
+		with open("faces/names.json", "r") as read_file:
+			data = json.load(read_file)
+			return list(data)
+	except:
+		print('[ Error ] Error in loadNames() function')
 
 
 init()