Update app.py

@@ -44,6 +44,9 @@ def get_distance(arr1, arr2):
     distance = np.linalg.norm(arr1 - arr2)
     return distance
 
+def get_brightness(arr):
+    return np.average(np.linalg.norm(arr, axis=2)) / np.sqrt(3)
+
 @app.route('/')
 def index():
     """Video streaming page"""
@@ -74,6 +77,8 @@ def register():
     image = base64.b64decode(request.form['image'])
     image_np = np.frombuffer(image, dtype=np.uint8)
     image_np = cv2.imdecode(image_np, cv2.IMREAD_UNCHANGED)
+    # change brightness
+    # cv2.add(image_np, np.array([x]))
     image_np = cv2.cvtColor(image_np, cv2.COLOR_BGR2RGB)
     image_np = prewhiten(image_np)
     image_np = resize(image_np)
@@ -101,6 +106,7 @@ def verify():
     image = base64.b64decode(request.form['image'])
     image_np = np.frombuffer(image, dtype=np.uint8)
     image_np = cv2.imdecode(image_np, cv2.IMREAD_UNCHANGED)
+    print(get_brightness(image_np))
     image_np = cv2.cvtColor(image_np, cv2.COLOR_BGR2RGB)
     image_np = prewhiten(image_np)
     image_np = resize(image_np)