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PostPosted: Fri Apr 24, 2015 11:18 am 

Joined: Fri Apr 24, 2015 11:13 am
Posts: 4
I have a couple of cheapish laptops that I want to use as slaves to do distributed recording using three Kinect 2 cams. The frame drops on the laptops are pretty extreme though (down to ~13) and I'm wondering what the best way to get that up to the necessary minimum is. Does anyone have experience using a multiple Kinect 2 system?


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PostPosted: Sat Apr 25, 2015 2:07 am 
iPi Soft

Joined: Wed Jan 11, 2012 6:12 am
Posts: 2123
Location: Moscow, Russia
Maybe your cheapish laptops do not satisfy Kinect 2 requirements. New Kinect SDK uses video card extensively. Also, there may be issues with some USB 3.0 controllers.
Run Kinect Configuration Verifier tool on your laptops and see what it outputs.


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PostPosted: Mon Apr 27, 2015 9:02 am 

Joined: Fri Apr 24, 2015 11:13 am
Posts: 4
I've got the fps working at a reasonable level now, but i'm having major issues with calibrating the Kinect v2.0s using a maglite. There are a ton of misdetects happening, is this more common with Kinect 2 than the original Kinect?

EDIT: I spoke too soon. The Configuration Verifier is giving me a (!) for the USB Controller: "Supported USB 3.0 port detected with unknown bandwidth. Kinect may or may not be compatible with your hardware."

The Verify Kinect Depth and Color Streams pane is also flickering a lot. It seems to be losing track of the kinect constantly. Is this a USB issue? If yes, what are the best fixes to try?


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PostPosted: Wed Apr 29, 2015 4:06 am 
iPi Soft

Joined: Wed Jan 11, 2012 6:12 am
Posts: 2123
Location: Moscow, Russia
If you get stable frame rate in iPi Recorder without much frame drops (10 per minute is an acceptable number) then I think you should not worry about the verifier.
If not - try other USB 3.0 ports or get another laptop having Intel or NEC/Renesas USB 3.0 controller.

Assuming the device is working OK, the problem with misdetects is generally caused by two reasons:
  • Light is often occluded by a person holding it. Solution: practice with your motions during a calibration paying attention that the light is visible to all cameras at most times.
  • Light spot is too big or too small. Try running calibration with different settings for the marker size. You can find it in Manual Calibration Adjustments expander.


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