Eye tracking offset

[kdue]

Hi!

My newly purchased Vive Pro Eye has a vertical eye tracking offset. I have tried recalibrating multiple times and ensured that HMD position and IPD is correct, but the result is always the same - I can only light up the dots presented after calibration, if I look ~20° lower than the target. So, how do I fix this offset?

I tried reinstalling the SRanipal Runtime and updating my graphics card driver, but this did not help.

Thanks!

@Corvus

 

[Daniel_Y]

How do you do the test? what application you use ? 

Have you tried the Focus sample included in Unity plugin of SRanipal SDK?

[kdue]

The offset I experience is from using Vive's Eyes built-in calibration. But when I use the Focus sample in Unity, as you suggest, the tracking looks perfectly fine! So, this is great!!

Now I am just curious why the dots presented after finalizing the built-in calibration shows a wrong result, eventhough the result in the SDK is fine? And if I can be certain that the eye tracking is accurate, which it now seems to be?

[Daniel_Y]

@kdue, What version SRanipal Runtime you are using?

[kdue]

@Daniel_Y, I am using version 1.1.0.1 of SRanipal Runtime, which I suppose is the newest.

I do, however, have the EyeChip driver version dated back to default 21-06-2006 installed. According to Tobii "The driver should not be older than from 2014." at least for their hardware, which I guess are similar. But I cannot find a way to update it, since the Windows Update found nothing and it apparently is not available for manual download. Could this be related?

[Daniel_Y]

Suggest to uninstall all personally installed Tobii's driver and runtime on your PC; and, then reinstall SRanipal runtime again. 

Double check if you see the same version as below from  runtime's system tray.

 

[kdue]

I did not have any Tobii software or drivers installed, but I uninstalled the outdated EyeChip driver and had it reinstall with a fresh SRanipal runtime install. The driver version is still dated at 21-06-2006.

My Runtime and Eye Camera versions are identical to yours.

@Daniel_Y

[Eric]

@kdue

Refer to the troubleshooting link (https://enterprise.vive.com/us/support/vive-pro-eye/category_howto/what-to-do-if-eye-tracking-is-inaccurate.html), did you ever try to enlarge the eye relief to check if it is improved?

Or able to invite another people and remove glasses to try if has same issue?

[kdue]

@Eric, Thanks for your suggestion, but I wrote on this forum due to the troubleshooting guide you are referring to being very brief and not addressing my issue. As you might know, the calibration allows only a short IPD range, but I tried all different allowed settings. Another person have tried calibrating, but the offset is identical. And I do not use glasses.

Edited October 3, 2019 by kdue

[Eric]

@kude

Instead of IPD, do you able to test eye relief as below?

https://www.vive.com/us/support/vive-pro-eye/category_howto/adjusting-the-lens-distance.html

And please help to provide a screenshot (mirror mode screen) to brief describe where is the position you look to light up the dots.