larger patterns unable to be removed

[sleepingcat4]

I have an image which has huge moire patterns. And i tried your code and it resulted in an error for the second approach and for the first one, it was unable to remove the patterns effectively. Can you help with this? : ) I tried everything I could learn and apply but these patterns are really stubborn. Appreciate your kind help.

error:

UnboundLocalError                         Traceback (most recent call last)
[<ipython-input-19-71d949942d6b>](https://localhost:8080/#) in <cell line: 1>()
----> 1 noisy_diag_filter = _low_pass_filter(501, noisy.shape, show_imgs=True)

[<ipython-input-18-9da2c26a3af9>](https://localhost:8080/#) in _low_pass_filter(radius, final_shape, show_imgs)
     31                      (final_shape[1] - filt.shape[1])//2+1)
     32 
---> 33     pad_shape = (pad_rows, pad_cols)
     34 
     35     # Apply padding

UnboundLocalError: local variable 'pad_rows' referenced before assignment

Image