#using fast Fourier transform and blurring kernels of different radii to unblur

[pseuddamntired]

Reblogging to add a specific thing I’ve messed around with: blurring data is not secure. Blurred data can be recovered, with some trial and error. Just gotta guess the right values for the kernel (the blurring filter, basically) that was applied and you can “reverse” the blur effect (it’s not likely to be one to one, there will likely be some artifacts) well enough that a person could read data from the image. If they get it right. But they have as many tries to get the parameters right as they need.

Censor it as completely as you can, destroy any pixels that could give data.

Unfortunately I am no expert in security so I can’t give advice on what to do instead, I just know about undoing blurring because I messed around with image processing techniques last fall.

Maybe look up destructive censoring? You want to destroy the sensitive data, not transform it. It should not be recoverable.

I try to use the boxes filled in to try and cover the pixels completely, and then I (maybe unnecessarily, idk) take a screenshot of the image and send that. I don’t want to chance that the original image is recoverable when sent out, even though I’m pretty sure that’s not easily done. But I think designing the feature for sending edited images such that it contained the original image in its data would be a terrible idea. I doubt major companies do that but there is likely a lot of metadata in files other than images that you might send out.

He did bro so bad homie made another video just to apologize.