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I wanted to build a more secure image redaction tool but not resort to black (which is I suspect the best way to redact) So instead of blurring, this tool firs
by rikschennink 5y ago
I wanted to build a more secure image redaction tool but not resort to black (which is I suspect the best way to redact)
So instead of blurring, this tool first scales down the image, then scrambles pixels randomly, and then blurs. This should (disclaimer: not a scientist) make it impossible to revert information back to its original state.
It should also prevent uncensored characters giving away the blurred shape of censored characters as those will be randomly scrambled.
Additionally the resolution of the blurred version of the image will be lowered when large parts of the image are redacted.
I thought I'd post it here on HN because I'm genuinely interested in if my assumptions are correct.