Close
I admit it, the true dupe doesn't show up in the top 10 results because it seems the results aren't classified by relevance but by order of apparition...it's a bit dumb.
And thanx for the info about rq (shame on me!)
So good luck for your algo!

P.S.: And for this Jacobs : in 1995 the images were 320*240 and their wheight of 5k to 100k so I think it wasn't difficult to search for dupes in small databases like this...(in moe the images are 5000*5000 and 10M...)