Update app.py

app.py

@@ -30,7 +30,7 @@ def grab_faces(img: np.ndarray) -> Optional[np.ndarray]:
 
     for cascade in cascades:
         cascadeClassifier = cv.CascadeClassifier(cv.data.haarcascades + cascade)
-        faces = cascadeClassifier.detectMultiScale(gray, scaleFactor=1.5, minNeighbors=5) # detect faces
+        faces = cascadeClassifier.detectMultiScale(gray, scaleFactor=1.3, minNeighbors=5) # detect faces
         if len(faces) > 0:
             detected = faces[0]
             logging.info(f"Face detected by {cascade}")