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VR Motion Cancellation - Time to test!

Discussion in 'VR Headsets and Sim Gaming - Virtual Reality' started by noorbeast, May 6, 2017.

  1. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Unfortunately there are considerable technical limitations which is why neither of those are currently an option.

    See here for member related efforts to produce a more robust fork specifically for motion cancellation: https://www.xsimulator.net/community/threads/openvr-motioncompensation.14576/
  2. DoctorD

    DoctorD New Member Gold Contributor

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    Yes, look at the other thread as the current build of Dschadu's cancellation plugin is excellent!
  3. Psionic001

    Psionic001 Active Member Gold Contributor

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    I think the two single most important limitations that need to be implemented are the positional data streams mentioned above, and the ability for the plugin to accept the streams.

    FlyPT has it planned for a future release to implement a stream of positional data. Mattzman developer of the OpenVR Input Emulator told me he is developing the stream input functionality but has recently gone quiet.

  4. DoctorD

    DoctorD New Member Gold Contributor

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    @Psionic001 go and check out the discussions in the link you referenced. FlyPT and Dschadu are very close to being able to do this already.
    Dschadu is very good at the VR side of things, and FlyPT (pmvcda) is now across what is needed as inputs for the VR software from the FlyPT mover software.

    Once pvmcda/FlyPT creates the output module for VR, then it shouldn't be too long for Dschadu to grab that and turn it into compensation.

    That said, the current solution is very good!!
    But in the future it would be good to not have to worry about keeping a tracker mounted properly (near your head), stable and charged
  5. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    As I understand it effective cancellation will be dependent on a fast rig: https://www.xsimulator.net/communit...elling-project-trial.13527/page-2#post-190286
  6. DoctorD

    DoctorD New Member Gold Contributor

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    @noorbeast give the current version of Dschadu's software a go. It's virtually flawless on my Vive (the only shaking now is from my own head when things get rough). It works remarkably well even on low filtering (low lag)

    I do however, agree that having a full software solution that is independent of the flaws of the physical tracking will be better overall (IMU jitters in vibration.... I'm looking at you!)
  7. jeanmehdi

    jeanmehdi New Member Gold Contributor

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    testing this thanks
  8. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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  9. jeanmehdi

    jeanmehdi New Member Gold Contributor

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  10. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    Great, then give the PiTool implementation of motion cancellation a whirl.
  11. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    what I did so far, using the newest pitool. enabling motion compensation results in a wrong angle of the view. Could not solve it by using a room set-up from sratch. Anyway when I was on the previous version it worked but imo not so good. OpenVR-MotionCompensation is now the best you can get atm.
  12. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    It has been a bit hit and miss based on user reports.
  13. JAD

    JAD Active Member

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    I found that mounting the controller horizontal and pointing forward like this rotates the world correctly. Only this orientation works and no need to do room setups.
    upload_2020-5-12_17-16-9.png
    I started with normal room setup. The moment you enable motion compensation in pitool, it rotates the world to suit the orientation of the controller facing this way.
    Then you bring up the VR menu or dashboard with the system button and you can aim at the make centre button to bring you into the cockpit properly.
    Aside from vibration problem, the positioning of the motion compensationa all worked well.

    Like you said OpenVR-MotionCompensation is the way to go but I havent got around to trying that yet.
    • Informative Informative x 1
  14. Dschadu

    Dschadu Member

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    I can only encourage you to give OVRMC a try. It's as easy as a few clicks to download and install. Open SteamVR dashboard and enable Motion Compensation via the VR-UI.
    No need for room setup or a specific controller orientation.
    • Agree Agree x 1
  15. Pit

    Pit - - - - - - - - - - - - - - - - Gold Contributor

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    As you mentioned, only this way works. In my case I have no option to mount the controller in the way you described. For better results also the controller has to be fixed on the seat (as high as possible and as close to the head as possible) to eliminate any small shaky movements. OVRMC is a good solution and easy to use.
  16. Chipless

    Chipless Member Gold Contributor

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    Late to the party here, but Valve finally shipped my Index. I purchased only the HMD, and then bought a single Vive Base Station (1.0) in order to keep costs down. Is there anyway to obtain motion compensation/cancellation to make things work more seamlessly with my motion platform? I did look over https://github.com/Dschadu/OpenVR-MotionCompensation but it seems like I would need the Index controllers as well? Thanks for any help you all can provide.
  17. Bastiuscha

    Bastiuscha Active Member

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    Yes of course, you need minimum one more controller (or tracker) as a reference for the calculation. I also recommend a controller to control your settings.
    • Agree Agree x 1
  18. Chipless

    Chipless Member Gold Contributor

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    Thank you so much for the quick response. Is there something specific you can recommend besides a Valve Index controller? The Index controllers are backordered right now, and are selling for absurdly inflated prices on eBay :eek:
  19. wazooda

    wazooda New Member

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    I too have an Index with a 6DOF platform.

    Get yourself a Vive Tracker. I got one for around $100 and attached it to the back of my seat up high.

    Works perfectly.
    • Agree Agree x 1
    • Informative Informative x 1
  20. noorbeast

    noorbeast VR Tassie Devil Staff Member Moderator Race Director

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    I agree, but just noting that Vive Trackers have been out of stock and hard to get for a while now.