increase ocr iteration

ocr.py

@@ -75,8 +75,9 @@ class Recognizer:
         inn_img = self.preprocess(inn_img, height=self.inn_h, width=self.inn_w)
         inn_img = inn_img[None, :, :, :]
 
-        self.infer_request.infer(inputs={self.input_tensor_name: inn_img})
-        preds = self.infer_request.get_tensor(self.output_tensor_name).data[:]
+        for _ in range(2):
+            self.infer_request.infer(inputs={self.input_tensor_name: inn_img})
+            preds = self.infer_request.get_tensor(self.output_tensor_name).data[:]
         result, nbest = self.codec.decode(preds)
 
         return result, nbest