Update app.py

app.py

@@ -168,6 +168,18 @@ with gr.Blocks() as demo:
             btn_infer = gr.Button("Run Inference", variant="primary")            
             btn_100m = gr.Button("Visualize (100m)")
             btn_10m = gr.Button("Visualize (10m)")
+            
+            gr.Markdown(
+                """
+                <small>
+                <b>Visualization range:</b><br>
+                • <b>100m</b>: recommended for <b>outdoor</b> scenes<br>
+                • <b>10m</b>: recommended for <b>indoor</b> scenes<br>
+                (Only affects visualization, not the raw depth output)
+                </small>
+                """,
+                elem_id="vis_hint"
+            )
 
         # ========== Right ==========
         with gr.Column(scale=2):