Update requirements.txt

requirements.txt

@@ -1,6 +1,7 @@
 gradio
 Pillow
-requests
-# Add opencv-python-headless if you decide to do local landmark detection
-# Add dlib if you use dlib (can be tricky to install on Spaces)
-# Add transformers and torch if using a local model from HF hub
+transformers
+torch
+opencv-python-headless  # For image processing and mediapipe
+mediapipe
+scipy # Often a dependency for transformers or image processing