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It is quite likely that Snipping Tool is also doing this. Every camera also leaves device specific signature because of its inherent silicon sensor defects. If
by angry_octet 2mo ago
It is quite likely that Snipping Tool is also doing this. Every camera also leaves device specific signature because of its inherent silicon sensor defects.
If you want to stay anonymous, don't share images you can't verify at the byte level. Apply filtering to decrease the low bit noise that could hide cryptographic signatures. Don't trust complex container formats.
See e.g. PPM format:
https://www.cs.swarthmore.edu/~soni/cs35/f13/Labs/extras/01/ppm_info.html https://www.cs.swarthmore.edu/~soni/cs35/f13/Labs/extras/01/...
These days entire scenes can be tweaked by AI to add unimportant but identifying marks, at a level far above signal processing tricks, like moving objects in the scene. Verify from multiple sources.
- threecheese 2mo agoIf Anthropic can manipulate text to add a watermark, what’s preventing providers from doing the same to generated images? Modifying the container format can’t protect you from a signature in the image’s visual representation, unless you apply noise to that (and know it’s enough noise/the right kind of noise to counteract whatever unknown technique they’ve applied).
- angry_octet 2mo agoAnthropic's watermarking technique is possible, and worryingly could effect low frequency choices (eg as I said, with object placement or style). However, this has to be a generation time decision, you can't really do that with a small edit. In fact small edits tend to be detectable spectrally.