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Nature 389, 235-237 (18 September 1997) | doi:10.1038/38400

Open Innovation Challenges

Binocular vision:  Seeing in reverse

Ian P. Howard1

It is remarkable that we perceive a three-dimensional world using two-dimensional images. Artists discovered that depth perception arises from perspective, shading and occlusion of distant objects by closer ones.

  1. Ian P. Howard is at the Centre for Vision Research, York University, North York, Ontario M3J 1P3, Canada.