That's really cool, what a great idea to use a photo camera... thanks for sharing that!
Best Evan On 2 Dec 2010, at 15:48, Scott wrote: > You are totally correct, after a little research (done by a friend, who's > been deconstructing a kinect and reading the patents, not by me!). > > The original "zcam" was a time of flight system. > > The Primesense system is a structured light system, but it does seem to take > advantage of the construct/deconstructive interference of the IR LASER it > uses. It looks like the laser passes through an HOE (holographic optical > element) to create the structure portion. > > Here's my friends blog post on his explorations: > > http://www.danreetz.com/blog/ > > > On Thu, Dec 2, 2010 at 1:13 AM, David Griffiths <[email protected]> wrote: > On Wed, 2010-11-17 at 08:10 -0800, Scott wrote: > > Here's a link to the company that makes the underlying technology... > > or one very similar to it: http://www.primesense.com/?p=487 > > > > What's interesting about the zcam is that it actually uses > > TIME-OF-FLIGHT to compute depth, so IR reflectivity shouldn't really > > matter! > > > > It does if the pulse they are sending out to measure is IR. IIRC the > picture image is captured at a different time to the depth. Sunlight and > reflective materials were a problem with all the cameras we were looking > at. > > In any case I thought the kinetic camera was using structured light - as > it has a projector which projects a pattern on the scene, ir camera to > measure it and a normal rgb camera. > > The ir camera and rgb camera are seperate, so you get the shadow effect > you can see in the depth images - time of flight cameras use the same > lens so are a little better. > > cheers, > > dave > > > >
