修正对label decode时重复字符会消失的bug

ppocr/postprocess/rec_postprocess.py

@@ -70,6 +70,7 @@ class BaseRecLabelDecode(object):
                 if text_index[batch_idx][idx] in ignored_tokens:
                     continue
                 if is_remove_duplicate:
+                    # only for predict
                     if idx > 0 and text_index[batch_idx][idx - 1] == text_index[
                             batch_idx][idx]:
                         continue
@@ -107,7 +108,7 @@ class CTCLabelDecode(BaseRecLabelDecode):
         text = self.decode(preds_idx, preds_prob)
         if label is None:
             return text
-        label = self.decode(label)
+        label = self.decode(label, is_remove_duplicate=False)
         return text, label
 
     def add_special_char(self, dict_character):