View full lesson: http://ed.ted.com/lessons/how-to-find-the-true-face-of-leonardo-siegfried-woldhek

Mona Lisa is one of the best-known faces on the planet. But would you recognize an image of Leonardo da Vinci? Illustrator Siegfried Woldhek uses some thoughtful image-analysis techniques to find what he believes is the true face of Leonardo.

Talk by Siegfried Woldhek.

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