NEW!  Version 3 of iPi Motion Capture is available. iPi Motion Capture 3 delivers new features for improved workflow including support of Kinect 2, improved arms tracking, simplified calibration and others. Read more >>

This documentation corresponds to version 2 of iPi Motion Capture. The latest documentation for version 3 can be found at https://docs.ipisoft.com/

Depth Sensors Comparison

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   <td width="30%"><center>[[Image:Kinect-small.jpg|thumb|Microsoft Kinect for Windows]]</center></td>
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   <td width="30%"><center>[[Image:ASUS-Xtion-live.jpg|thumb|ASUS Xtion Live]]</center></td>
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Revision as of 12:37, 28 January 2013

Starting from version 1.8.0.81, iPi Recorder supports ASUS Xtion and ASUS Xtion Live devices (and also PRO modifications for developers). They are similar to Microsoft Kinect sensor and can be used in the same way. But there are certain differences that you can take into account before making decision on which device to choose for use with iPi Desktop Motion Capture (iPi DMC).


Microsoft Kinect for Windows
Microsoft Kinect for XBOX 360
ASUS Xtion Live
ASUS Xtion

Kinect vs Xtion

Both Microsoft Kinect and ASUS Xtion sensors are based on the same PrimeSense infra-red technology. So all basic characteristics critical for full-body motion capture are generally the same. But there are certain differences that you can take into account:

Device Pros Cons
Microsoft Kinect
  • High quality of device drivers
  • Stable work with various hardware models
  • Has motor that can be controlled remotely by iPi Recorder application:
    this makes device positioning more convenient
  • Bigger size (12" x 3" x 2.5" against 7" x 2" x 1.5")
  • Higher weight (3.0 lb agains 0.5 lb)
  • Require ACDC power supply
  • Only 30 fps frame rate
ASUS Xtion
  • More compact ( 7" x 2" x 1.5" against 12" x 3" x 2.5")
  • Lighter weight (0.5 lb agains 3.0 lb)
  • Does not require power supply except USB
  • Allow 60 fps frame rate (at 320 x 240 resolution only)
  • Less popular device
  • Lower drivers quality
  • Does not work with some USB controllers
  • No motor, allow only manual positioning

Xtion Live vs Xtion

  • ASUS Xtion Live is recommended because it includes RGB sensor. RGB image is currently not used for tracking, but it helps to operate the system
  • Note: ASUS Xtion and ASUS Xtion Live are also available in PRO modification (for developers). But the hardware is the same for regular and PRO versions, the only difference is in the software supplied with the device, that you will not need for use with iPi Motion Capture system

Kinect for Xbox vs Kinect for Windows

  • If you plan to use Kinect not only with iPi Motion Capture, but also to have fun with Xbox games, then you definitely need Kinect for Xbox
  • But if iPi Motion Capture is all you need Kinect for, then Kinect for Windows has a couple of advantages over Kinect for Xbox
    • Kinect for Windows is officially licensed (by Microsoft) for commercial use (unlike Kinect for Xbox which is only licensed for personal gaming)
    • Since it is officially allowed to use with Windows, we may hope that drivers quality and support will be better
    • It has capability to track at low distance (from 40 cm). This is not useful for full-body motion capture, but may be helpful for other applications
  • You can use mixed configuration consisting of 1 Kinect for XBOX and 1 Kinect for Windows
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