Update app.py

app.py

@@ -714,7 +714,11 @@ if __name__ == "__main__":
             face_btns[i].click(det_seg_img, inputs=[images[i], gr.State("A face")], outputs=[images[i]])
             det_btns[i].click(det_seg_img, inputs=[images[i], captions[i]], outputs=[images[i]])
             vlm_btns[i].click(vlm_img_caption, inputs=[images[i]], outputs=[captions[i]])
-            # images[i].upload(vlm_img_caption, inputs=[images[i]], outputs=[captions[i]])
+            images[i].change(
+                lambda img: "" if img is None else gr.update(),
+                inputs=[images[i]],
+                outputs=[captions[i]]
+            )
 
     demo.unload(cleanup)
     demo.queue()