Restoring Depth to Leonardo’s Mona Lisa
Was La Gioconda the model for one of the world’s earliest attempts at three-dimensional imaging?
The 500-year-old painting by Leonardo that we call the Mona Lisa is one of the most famous works of art in the world. But how many admirers of this portrait have ever set eyes on its near-identical twin in Madrid's Prado Museum, and what is the relation between the two portraits? With a combination of visual tests and high-tech imaging, the authors find hints of what may have been the world's first stereoscopic painting—clues that can help us understand how 3D imaging is used in so much of our visual world today.
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