Update app.py

app.py

@@ -168,7 +168,7 @@ def process_image(
 
 def get_target_size(image_height, image_width, max_size: int):
     if image_height < max_size and image_width < max_size:
-        new_height, new_width = image_width, image_height
+        new_height, new_width = image_height, image_width 
     elif image_height > image_width:
         new_height = max_size
         new_width = int(image_width * max_size / image_height)