update README.md

README.md

@@ -82,10 +82,11 @@ You can put the testing images in the `inputs/TestWhole` folder. If you would li
 python inference_codeformer.py --w 0.5 --has_aligned --test_path [input folder]
 
 # For the whole images
-python inference_codeformer.py --w 0.7 --test_path [input folder]
+# Please set `--upsample_num_times 2` when faces are small and failed detected
+python inference_codeformer.py --w 0.7 -upsample_num_times 1 --test_path [input folder]
 ```
 
-NOTE that *w* is in [0, 1]. Generally, smaller *w* tends to produce a higher-quality result, while larger *w* yields a higher-fidelity result.
+NOTE that *w* is in [0, 1]. Generally, smaller *w* tends to produce a higher-quality result, while larger *w* yields a higher-fidelity result. 
 
 The results will be saved in the `results` folder.