Quote:
Originally Posted by borked
OK, on a database hash of 10,315 images, I took a dataset of 281 images and asked to find the matches - it took 38.52 seconds. The vast majority of that time (36.53 secs) was taken up by creating the hashes of the 281 images (which was expected)
That's 2,898,515 hash-against-hash calculations in 2.01 seconds (5.19 billion calculations per hour).
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Quote:
Originally Posted by borked
better still...
I created 120x90 thumbs of all the 281 query images (which would also distort them all as it doesn't preserve aspect ratio) and used the thumbs to query the db...
it took 3.69 seconds  |
Now that's workable
If my calculations are correct, at that speed you can compare ~ 6500 images/day with a database of 1 million pics (hashes), and if using thumbnails only that goes up to ~ 65 000 images/day - more than enough to keep ALL boards and torrents under control image piracy wise.