Upload app.py

app.py

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+import gradio as gr
+import cv2
+
+def to_black(image):
+  output = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
+  print('===========================')
+  return output
+
+interface = gr.Interface(fn=to_black, inputs="image", outputs="image")
+interface.launch(share=True)