Depends on the kind of blur. Some kinds can indeed be almost perfectly removed if you know the used blurring function, others are destructive.
But, yes, don’t take that chance. Always delete/paint over sensitive information.
Source: we had to do just that in a course I took a long time ago.
wouldn’t you also need to know in what kind of pattern the blur was applied. I am sure if you do it multiple times starting from multiple non identical partitioning of the region, it will be impossible.
Ah man, I remember when they caught some pedo creep who used a non-destructive blur on the CSAM materials he produced that included his face. So satisfying.
Actually not always, there is a script that can recover text from mosaic’d screenshots if the font and pixellation technique is known. I just use a fake mosaic – the easiest way is to paste a bitmap of non-confidential text from elsewhere in the screenshot and then apply the filter.
I’ve heard blur is not destructive. Please use a paintbrush on 100% opacity if you do this
When I post pictures with blurred information, I replace the info with something trollish and then blur it. Nobody appreciated that so far. :(
Depends on the kind of blur. Some kinds can indeed be almost perfectly removed if you know the used blurring function, others are destructive. But, yes, don’t take that chance. Always delete/paint over sensitive information.
Source: we had to do just that in a course I took a long time ago.
I prefer sampling the surroundings, typing out a different number or text over it, then blurring with a non destructive effect.
Name: Phil McCracken
SSN: EAT-MY-NUTS
Just for anyone who tries
Signature: …
wouldn’t you also need to know in what kind of pattern the blur was applied. I am sure if you do it multiple times starting from multiple non identical partitioning of the region, it will be impossible.
You’re severely underestimating the power of weaponized autism.
Ah man, I remember when they caught some pedo creep who used a non-destructive blur on the CSAM materials he produced that included his face. So satisfying.
He only spiral blurred his face… So they just did it in the opposite direction. It was beyond stupid
Not in PDF tho. There, the stroke is saved in metadata…
I’ve switched to a mosaic blur. Looks neat and always destructive.
Actually not always, there is a script that can recover text from mosaic’d screenshots if the font and pixellation technique is known. I just use a fake mosaic – the easiest way is to paste a bitmap of non-confidential text from elsewhere in the screenshot and then apply the filter.
Thanks for that.
I’m glad I use really huge pixels though. Would be hard to crack these: