test

app.py

@@ -0,0 +1,9 @@
+import gradio as gr
+import cv2
+​
+def to_black(image):
+    output = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
+    return output
+​
+interface = gr.Interface(fn=to_black, inputs="image", outputs="image")
+interface.launch()