Update app.py

app.py

@@ -8,6 +8,7 @@ import os
 #os.system("sudo apt-get install nvIDia-cuda-toolkit")
 #os.system("/usr/local/bin/python -m pip install --upgrade pip")
 #os.system("pip install argparse")
+os.system("pip install opencv-python")
 #import pydensecrf.densecrf as dcrf
 from PIL import Image
 #import torch