NOPE9 wrote:
> Subject: [TECH]    What do you think of this 3D technique ?
> 
> The company is Canesta.
> http://canesta.com/
> 
> They use time of flight of light to measure distances on a pixel by  
> pixel basis.
> They drive an LED with a square wave waveform at 44 MHz.  Then they  
> measure the inphase and out of phase light incident on two pixel  
> arrays that are driven by the same waveform with phase offsets.

I looked into this a while ago, because I had a client with a need for 3-D
optical sensing. It was brought to my attention by a friend who knows some
of the technical people at Canesta (through MIT).

It is interesting technology, but it turned out to be unsuitable for my
client because both the maximum range and the range accuracy are rather
limited.

We ended up working with the rotating Velodyne HDL-64E sensor -- the one
seen on many of the DARPA Grand Challenge and Urban Challenge autonomous
vehicles.

   http://www.velodyne.com/lidar/

-- Dave Tweed
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