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From: Piergiorgio Sartor <piergiorgio.sartor.this.should.not.be.used@nexgo.REMOVETHIS.de>
Newsgroups: rec.photo.digital,comp.lang.python
Subject: Re: PSA Using Python Pillow to foil camera image PRNU fingerprinting
Date: Fri, 31 Jul 2026 09:35:21 +0200
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On 30/07/2026 17.42, Maria Sophia wrote:
[...]
> Right now, the PRNU-scrubbing script pipeline is running two full
> destructive passes, each intended to disrupt PRNU by performing
>   a. blur
>   b. rotate
>   c. crop
>   d. resize
>   e. inject noise
> But that doubly scrubbed image is a bit to destroyed to be usable.	
Have you tried to de-noise first, with
something like BM3D, and then re-noise?

For both operations likely some noise
parameter is required.

I know this is not the same as the PRNU,
but de-noising will reduce / remove any
uncorrelated information.

Re-noise will make it plausible.

bye,

-- 

piergiorgio