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| | | Forum Newbie
Group: Forum Members
Last Login: 11/2/2007 12:09:31 PM
Posts: 3, Visits: 15 |
| | I'm currently working on a project at work. I'm using the vr920 api to obtain the orientation using the IWRGetTracking(&yaw,&roll,&pitch). The problem i'm having is that the yaw, roll, and pitch obtained has some noise. For example if i keep the headset completely still and zero it, the values will flucuate slightly (yaw (plus/minus) 1.8 degrees, pitch (plus/minus) .2 degrees, roll (plus/minus) .2 degrees). The flucuation makes the screen jittery for my program. Is this normal or has it not been calibrated correctly? Maybe damaged? Is there any kind of smoothing capabality in the control panel? Do i have to implement my own smoothing algorithm, and if someone encounted this problem which one would you suggest? Any insight or advice will be greatly appreciated. TIA |
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Technical Support
Group: Administrators
Last Login: 1/5/2011 11:16:13 AM
Posts: 176, Visits: 468 |
| I don't know much (read: anything) about programming, so I can't help you with the SDK or any API, but I can tell you that due to the nature of the sensors in the VR920, a small amount of 'wiggle' is normal. With very few exceptions, I've seen our guys make that 'wiggle' disappear in game, so smoothing algorithms much be possible. I didn't want you wasting a bunch of time re-calibrating what is properly calibrated, though.
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If it ain't broke, break it. Then you can fix it.
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Todd R. Ferguson
Technical Support
Vuzix Corporation
585.359.5909
todd_ferguson@vuzix.com |
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| | | Forum Newbie
Group: Forum Members
Last Login: 11/2/2007 12:09:31 PM
Posts: 3, Visits: 15 |
| | I just implemented a smoothing algorithm and it works decently. The problem i'm having is that the flucuation for the yaw is plus/minus 1.8 degrees. The roll and pitch has a flucuation of about .5 degrees. Is this normal? The high amount of flucuation makes the panning of the views somewhat choppy. |
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Technical Support
Group: Administrators
Last Login: 1/5/2011 11:16:13 AM
Posts: 176, Visits: 468 |
| That fluctuation is high, but not unheard of. I would suggest spending a little extra time calibrating, and see if that helps.
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If it ain't broke, break it. Then you can fix it.
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Todd R. Ferguson
Technical Support
Vuzix Corporation
585.359.5909
todd_ferguson@vuzix.com |
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| | | Supreme Being
Group: Moderated Users
Last Login: 12/4/2008 1:36:50 PM
Posts: 539, Visits: 1,120 |
| | The Yaw is measured with a compas (magnetometer), but the pitch and roll are measured with accelerometers. That is why they are totally different in terms of noise. |
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| | | Forum Guru
Group: Forum Members
Last Login: 2/2/2009 6:09:53 AM
Posts: 55, Visits: 145 |
| Same issue here, how do you add an algorithium to resolve this?
Alpha14
www.alphabravoclan.co.uk |
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