3 ms·
I agree with "I'm fairly certain this will defeat 99.9% of malicious users". Also, note that C2PA should have something like Level 3 as well: "The image is mat
by fightfake-ai 1mo ago
I agree with "I'm fairly certain this will defeat 99.9% of malicious users".
Also, note that C2PA should have something like Level 3 as well: "The image is mathematically proven to have come from the physical camera sensor."
It's somehow difficult to achieve this, but it's possible (although the attacks will always be possible of course).
- dTal 1mo agoDifficult and also solves nothing, since you can just point the camera at a screen.
- fightfake-ai 1mo agoThere is active research addressing this problem, for example https://www.usenix.org/system/files/usenixsecurity25-park.pdf https://www.usenix.org/system/files/usenixsecurity25-park.pd... But yeah, difficult too :)
- thaumasiotes 1mo agoHave you ever tried pointing a camera at a screen? The screen is doing all kinds of crazy things that are not apparent to your eyes, but that show up clearly on camera.
- blincoln 1mo agoSome screens are like that, but it's not an inherent property of all visual displays. For example, you'll see a sort of barber-pole effect when pointing a video camera at a raster-scan digital display whose refresh rate isn't synced to the camera's frame rate. To avoid that, sync them, or maybe use a colour e-ink display. Alternatively, print a high-resolution version with a decent photograph printer and take a picture of the print with the C2PA camera.