26 ms·
Well to know for sure if that's lower we'd need to know the size of the NCMEC database. They're the same if the NCMEC contains around 10 000 images. Though kno
by contravariant 5y ago
Well to know for sure if that's lower we'd need to know the size of the NCMEC database. They're the same if the NCMEC contains around 10 000 images.
Though knowing that 1 in roughly 30 million images generates a false positive is the most important figure I suppose. Assuming 100 million iPhones with each 1000 pictures that would generate some 3000 phones with one or more false positives [1] and a roughly 5% chance that some phone has at least 2 false positives.
[1]: https://www.wolframalpha.com/input/?i=%28100+million%29+e%5E-l+%28e%5El+-+1%29+where+l+%3D+%281000.0%2F30+million%29 https://www.wolframalpha.com/input/?i=%28100+million%29+e%5E...
[2]: https://www.wolframalpha.com/input/?i=+%281+-+e%5E-l+%28e%5El+-+1+-+l%29%29+%5E+%28100+million%29+where+l+%3D+%281000.0%2F30+million%29 https://www.wolframalpha.com/input/?i=+%281+-+e%5E-l+%28e%5E...