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Hacked Kinect is now a 3D video capture tool

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Re: Hacked Kinect is now a 3D video capture tool

#31
post #7

Don't miss: a) His other video of the system where he shows that measurements of 3d objects exactly match real counterparts: http://www.youtube.com/watch?v=f1ieKe_ts0k b) His homepage of other experiments: http://idav.ucdavis.edu/~okreylos/index.html

It's implied in the measurement video that he's feeding his captured data through a realtime 3D modelling/rendering tool. Does anyone know what that tool is?

Re: Hacked Kinect is now a 3D video capture tool

#32

For the frequency of the news about Kinect hacking I get the feeling that the homebrew software for Kinect will soon boost with much more professional features than the official software, esp. since it's pushed with games. As Microsoft sells these things highly subsidized to claim profit with on the games I see lot's of conflict potential.

> As Microsoft sells these things highly subsidized to claim profit with on the games I see lot's of conflict potential.

http://www.eetimes.com/electronics-news/4210649/Kinect-s-BOM...

Of the roughly $56 BOM, about $17 is attributed to the cost of the PrimeSense reference system, including the cameras, microphones and processor, UBM TechInsights said. Microsoft is planning to retail the Kinect system for $149, and stands to make a healthy profit on each unit, UBM TechInsights noted

Re: Hacked Kinect is now a 3D video capture tool

#33
post #8
post #3

Earlier quoted context omitted.

The Kinect works by projecting an infra-red grid on to the room so you can't use 2 of them in the same space (unless you modify the hardware somehow)

Could you synchronize two Kinect devices on one clock and then toggle the display/capture of that grid every odd or even 10ms span? So, only one grid is displayed and processed during its 'slice' of time, with the grids strobing rather than continuously projected. Software-only, or would that result in too jerky of a motion capture?

How about projecting different patterns?

Re: Hacked Kinect is now a 3D video capture tool

#34
post #31
post #7

Don't miss: a) His other video of the system where he shows that measurements of 3d objects exactly match real counterparts: http://www.youtube.com/watch?v=f1ieKe_ts0k b) His homepage of other experiments: http://idav.ucdavis.edu/~okreylos/index.html

It's implied in the measurement video that he's feeding his captured data through a realtime 3D modelling/rendering tool. Does anyone know what that tool is?

On his page[1] it says "The 3D reconstruction code is entirely written from scratch in C++, using my own Vrui VR toolkit[2] for 3D rendering management and interaction."

[1] http://idav.ucdavis.edu/~okreylos/index.html (frame navigation?? ugh)

[2] http://idav.ucdavis.edu/~okreylos/ResDev/Vrui/MainPage.html

Re: Hacked Kinect is now a 3D video capture tool

#35

Take 3 cameras and you get full 3D. Then project on a 3DTV, and you have a much more immersive video conference!

While that would be very very cool I don't think it would work with the current hardware. It works by projecting a bunch of dots on the scene in IR (so you can't see them) then tracking them with a camera. So multiple Kinects are going to confuse each other (probably, I assume so anyway).

Just got my Kinect in the post this morning, very excited about what I can do with it!

Re: Hacked Kinect is now a 3D video capture tool

#36

I'm not in this space or planning on investing time into this but I just wanted to say Kudos to Microsoft for creating something that developers are excited about again... even if they didn't indent to do that. I'd start hacking on this if I wasn't invested in a different direction.

[deleted]

Re: Hacked Kinect is now a 3D video capture tool

#37

I'm not in this space or planning on investing time into this but I just wanted to say Kudos to Microsoft for creating something that developers are excited about again... even if they didn't indent to do that. I'd start hacking on this if I wasn't invested in a different direction.

I wouldn't give MS too much credit. They bought the hardware from the company that created it.

Yup, here's the reference design in case anyone is curious:

http://www.primesense.com/?p=514

Re: Hacked Kinect is now a 3D video capture tool

#38
If money is no object, commodity stereo equipment exists with better range than the Kinect. From Wikipedia:

   The Kinect sensor has a practical ranging limit of 1.2–3.5 metres 
   (3.9–11 ft) distance when used with the Xbox software.
The Kinect was limited by cost, size, and the need to work in poor lighting conditions. But by spacing your higher-quality cameras out (increasing the baseline), accurate depth at 10 meters is a reasonable goal.

One such device: http://www.ptgrey.com/products/bumblebee2/index.asp

Accuracy chart: http://www.ptgrey.com/support/kb/data/stereoaccuracy.xls [XLS warning]

Re: Hacked Kinect is now a 3D video capture tool

#39
post #29
post #19

Earlier quoted context omitted.

I have a 3d printer, but not a Kinect. Range data is not very good at all at creating 3d models. What you really want is that plus a turntable so you can get multiple views. To get a printable model, you need a mesh with no holes. A single range image has lots of holes, so you can't really print the image without filling them by taking multiple images and matching them. That said, I do think I'll make a 3d scanner ba…

Hi, I'm thinking of getting RepRap. Do you find your printer brings you any business opportunities ?

Well, I have been selling some parts, but mostly to other Reprappers. I'm looking for ways to develop something more extensive with it, but it's one of a stack of fabrication-related ideas I'd like to play with, each more attractive. The main problem is that printing is slow, and linear. You can't easily scale it. Some people are building botfarms, but even then their supply is linear, and limited by space.

Pop over on the #reprap channel on freenode and meet the rest of us if you want to know more.

Re: Hacked Kinect is now a 3D video capture tool

#40

For the frequency of the news about Kinect hacking I get the feeling that the homebrew software for Kinect will soon boost with much more professional features than the official software, esp. since it's pushed with games. As Microsoft sells these things highly subsidized to claim profit with on the games I see lot's of conflict potential.

I can see indie game developers using Kinect to do realistic motion-capture in games. I recall seeing this issue pop up in the 'making-of' DVD for Alan Wake by Remedy. When they made their first big game, Max Payne 1, they did the storytelling in the form of a comic due partially to budget constraints. Using a hacked Kinect and cheap PC hardware, game developers could capture a huge range of motions and use video edi…

The problem there, I worry, is once someone starts selling an indie game with third party support MS will go after them legally.

They don't have much standing with the hackers atm, but a commercial indie game is another matter.

Which is concerning :(

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