Depth-sensitive imaging via polarization-state mapping
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United States of America Patent
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Sep 11, 2012
Grant Date -
Mar 3, 2011
app pub date -
Aug 25, 2009
filing date -
Aug 25, 2009
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Abstract
A depth-sensitive imager for imaging a scene in three dimensions. The depth-sensitive imager comprises a light source configured to project a polarized illumination onto a surface of the scene, and a detector configured to capture an image of the scene by detecting light from the scene, in which image a polarization state of the light is encoded. The detected light includes a portion of the polarized illumination reflected from the surface. The depth-sensitive imager further comprises an analyzer configured to generate output responsive to a distance between the light source and the surface based on the image.
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