Can the real smear be undone using a filter? | Hacker News

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		quickthrower2 on Sept 6, 2022 \| parent \| context \| favorite \| on: Dreamy Blur Can the real smear be undone using a filter?

Daub on Sept 6, 2022 | [–]

Don’t think so. A filter can blur, and in theory can also unblur. But in practice, cannot.

Reminds me of this disturbing case…

https://www.minnpost.com/politics-policy/2007/11/you-can-swi...

bcraven on Sept 6, 2022 | [–]

Deconvolution might be able to unblur it.

https://www.mathworks.com/help/images/deblurring-images-usin...

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