Mystery Solved

Mona Lisa 'happy', computer finds

A computer has been used to decipher the enigmatic smile of Leonardo da Vinci's Mona Lisa, concluding that she was mainly happy.

The painting was analysed by a University of Amsterdam computer using "emotion recognition" software.

It concluded that the subject was 83% happy, 9% disgusted, 6% fearful and 2% angry, New Scientist magazine was told.

The computer rated features such as the curvature of the lips and crinkles around the eyes.

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