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I am trying to use a scanner with vertical banding. The scan head's black and white point calibration numbers have a modulation pattern on top of them. I am not sure if the calibration's banding is what causes the modulation or vice versa.

Is there any way to modify the calibration to make it go away?

I symmetrically discarded the high power bins away from 0 and the banding was somewhat diminished but still present. Is there a better solution?

Scanner calibration white points enter image description here

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