How We Made Image Copy-Detection ~1,000,000 Faster — by Refusing to Look at Pixels
Structural hashing for pixel art: a 1024-byte key that answers 'is this the same artwork?' in 115 nanoseconds — and then tells you exactly what was edited. Nine days, or one second. That is the real distance between the naive answer and the structural one — measured, on a single CPU core, for the same question asked of the same ten million images. This article is the story of that gap, and of the…
We haven't written up this one. Dev.to has the full story — the link below goes straight to it.