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Recovering three-dimensional shape around a corner using ultrafast time-of-flight imaging
Nature ^ | March 20, 2012 | Andreas Velten, et al

Posted on 03/20/2012 2:48:27 PM PDT by Stoat

The recovery of objects obscured by scattering is an important goal in imaging and has been approached by exploiting, for example, coherence properties, ballistic photons or penetrating wavelengths. Common methods use scattered light transmitted through an occluding material, although these fail if the occluder is opaque. Light is scattered not only by transmission through objects, but also by multiple reflection from diffuse surfaces in a scene. This reflected light contains information about the scene that becomes mixed by the diffuse reflections before reaching the image sensor. This mixing is difficult to decode using traditional cameras. Here we report the combination of a time-of-flight technique and computational reconstruction algorithms to untangle image information mixed by diffuse reflection. We demonstrate a three-dimensional range camera able to look around a corner using diffusely reflected light that achieves sub-millimetre depth precision and centimetre lateral precision over 40 cm×40 cm×40 cm of hidden space.

(Excerpt) Read more at nature.com ...


TOPICS: Arts/Photography; Miscellaneous; Science
KEYWORDS: camera; computer; laser; photography; physics; physicsping; science; stringtheory; tech; technology; techping
Readers may also be interested in an article based upon this research appearing in USA Today, which is written for a more general audience and also features a stylish video which explains the techniques and processes in simple terms.

'See-around-a-corner' camera prototype unveiled – USATODAY.com

 

1 posted on 03/20/2012 2:48:37 PM PDT by Stoat
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To: ShadowAce; SunkenCiv

“Taking a picture from around a corner” ping.


2 posted on 03/20/2012 2:49:42 PM PDT by Stoat (If you want a vision of the future, imagine a Birkenstock stamping on a human face... forever)
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To: Stoat

hunh.


3 posted on 03/20/2012 4:17:52 PM PDT by the invisib1e hand (knowledge puffeth; information deludeth.)
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To: Stoat
Inverse scattering problems have always been a real bear to solve.

Glad to see they're making progress.

Cheers!

4 posted on 03/20/2012 7:38:08 PM PDT by grey_whiskers (The opinions are solely those of the author and are subject to change without notice.)
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To: Stoat; AdmSmith; bvw; callisto; ckilmer; dandelion; ganeshpuri89; gobucks; KevinDavis; ...

Thanks Stoat. So, all, what would you say to my changing this to a more general physics list? There used to be one, this one started as a very small corner of the forum niche list, then we, uh, lost the physics listmeister.


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5 posted on 03/20/2012 9:16:47 PM PDT by SunkenCiv (I come to bury Caesar, not to praise him)
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