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by Capt-RogerOver
3298 days ago
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Openface (probably state-of-the-art currently? If I haven't missed anything) uses a 128-dimensional unit hypersphere to represent a face identity. They have likely optimized this, so it's the dimensionality that works well in practice, not too large, not too small. It's perhaps a bit bigger than it has to be, but it cannot be too big either because that would very likely lead to overfitting.
So that's 128*sizeof(float) = 512bytes = 4096 bits of information.
Kinda like an RSA private key :). |
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