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That seems to imply they do need one human-generated positive match, though.

• jacobolus 15y ago
  It would be hard to find matches for an image if you didn’t start with an image to match, eh?
  • pi18n 15y ago
    Haha, yes, but I mean it seems to imply it requires a starting pair; one additional photo selected by the human as a match in addition to the one we desire to find matches for.
    • abhinavsh 15y ago
      This work only requires one image (The query) and nothing else as positive.