Add timer to capture images every 0.5 seconds

app.py

@@ -8,7 +8,7 @@ import io
 
 def preprocess(image):
     img = np.array(image)
-    img = cv2.flip(img, 1)
+    img = cv2.flip(img, 1)  # mirror
     gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
     kernel = np.array([[0,-1,0], [-1,5,-1], [0,-1,0]])
     gray = cv2.filter2D(gray, -1, kernel)
@@ -42,20 +42,21 @@ with gr.Blocks() as demo:
     with gr.Row():
         webcam = gr.Image(
             type="pil",
-            sources=["webcam"],
-            label="Webcam Input",
-            live=True  # <-- enables real-time updates
+            sources=["webcam"],  # user captures frames manually
+            label="Webcam Input"
         )
         processed_preview = gr.Image(type="pil", label="Processed Preview")
 
     ocr_text = gr.Textbox(label="Extracted Text")
     audio_output = gr.Audio(label="Text-to-Speech Output")
 
-    webcam.change(
-        fn=extract_text_and_speak,
-        inputs=webcam,
-        outputs=[processed_preview, ocr_text, audio_output]
-    )
+    # Timer triggers the function every 0.5 seconds
+    def timer_fn():
+        if webcam.value is None:
+            return None, None, None
+        return extract_text_and_speak(webcam.value)
+
+    gr.Timer(interval=0.5, fn=timer_fn, outputs=[processed_preview, ocr_text, audio_output])
 
 if __name__ == "__main__":
     demo.launch()