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A comment on Show HN: My weekend project - Chessboard picture recognition. Parent comment

Re:Show HN: My weekend project - Chessboard picture recognition by endtime on Thursday August 04, 2011 @09:37PM (#2848611)
Have you seen this? http://www.illusion-optical.com/Optical-Illusions/Chessboard...
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Re:Show HN: My weekend project - Chessboard picture recognition by matthiasb on Thursday August 04, 2011 @10:24PM (#2848721)
I fell for this trick. Good to know! This is one thing a computer can easily be better than a human. I make me think it could be possible to build CAPTCHAs with optical illusions.
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Re:Show HN: My weekend project - Chessboard picture recognition by endtime on Friday August 05, 2011 @01:38PM (#2850907)
Agreed that a computer can solve that much more easily, but my point was that just looking at a corner square wouldn't be sufficient.
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