• maynarkh@feddit.nl
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    8 months ago

    Wouldn’t capturing in high-res, then scaling down or compressing the picture/video defeat the noise filter? Or if you threw a bit of noise on it yourself?

    • suppenloeffel@feddit.de
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      8 months ago

      Steganography is a (fascinating) removed. There are a lot of ways to hide a message in an image which is very resilient to manipulations like resizing, compression or even the loss of information by actually filming a screen versus taking a screen capture.

      If you adjust your approach to not rely on a single picture to reliably convey a short message, but part it out over tens or hundreds of frames in a video, it’s basically impossible to make sure that the message was erased without knowing the algorithms used or rendering the video unwatchable.

      It’s an awesome field and nothing new.