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A comment on Blur Tools for Signal. Parent comment

Re:Blur Tools for Signal by pfortuny on Thursday June 04, 2020 @11:07AM (#23417599)
Wait: informations is lost if the blur is truly a gaussian process. The simulation of blur by means of a convolution can perfectly well be reversible.

Image blur is not a gaussian process.

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Re:Blur Tools for Signal by young_unixer on Thursday June 04, 2020 @01:15PM (#23419194)
Are you saying that convolution with a gaussian kernel is not real gaussian blur?

I'm legitimately asking. I'm really ignorant about this subject.

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Re:Blur Tools for Signal by teenbear on Thursday June 04, 2020 @01:28PM (#23419347)
In theory it is, in reality there is discretization of the signal and noise
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Re:Blur Tools for Signal by pfortuny on Thursday June 04, 2020 @01:33PM (#23419397)
No: it is a simulation, because it is a discretization and the map can be injective (or “almost so”).
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