Update app.py

app.py

@@ -123,7 +123,7 @@ def extract_features(landmarks, face):
     features = [math.dist(landmarks[33], landmark) for landmark in landmarks] + [face[2] - face[0], face[3] - face[1]]
     return features
     
-def image_processing(frame):
+def image_processing(img):
     return proc_image(img, detector) if recog else img
 
 def video_frame_callback(frame):