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enter image description here

Just wondering what image processing techniques can remove some artifacts of parallel-line like streaks, which are shown in the red box in the above picture.

I was thinking about removing it from Fourier domain operation(I expected to see a strong response other than DC some where in Fourier spectrum, but I could not see anything I expected.)

So I am wondering

  1. how to locate those artifacts in an image,
  2. and what image processing techniques can possibly get rid of them?

Any pointer is highly appreciated. Thank you.

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