Update app.py

app.py

@@ -63,7 +63,7 @@ if uploaded_video is not None:
         lab = cv2.cvtColor(normalized, cv2.COLOR_BGR2LAB)
         resized = cv2.resize(lab, (224, 224))
         L = cv2.split(resized)[0]
-        L -= 50
+        L -= 43
 
         # Set the input and get the colorization
         net.setInput(cv2.dnn.blobFromImage(L))