What is Reddit's opinion of VR Calibration for Cardboard?

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Have you scanned the QR code in the profile generator? You should get a VR environment on your phone where changes are seen in real time. This can help some too.

The settings should be done in order:

Focal length: Adjust your lenses until the individual pixels are visible.

Screen to lens distance: Adjust down until you're seeing the red background enter your field of view. Go back a step or two until it's gone.

Inter-lens distance: You should measure your IPD by standing in front of a mirror with a ruler. Close one eye and look directly ahead with the other. Take the reading and then repeat the process with the other eye. In the profile generator, enter that value and adjust it if need be until the red dot becomes one dot. The lenses themselves should be set so your eye is centered as much as possible when looking through one eye.

Tray to lens-center distance: Adjust it up or down until the red dot is in the middle of your view.

Distortion coefficients: Adjust until the lines become straight.

I also have BOBOVR Z4, by far the best compared to the others I have (Carboard v1, Cardboard v2, VR Box v1 )

Use the app VR Calibration

This are my settings:

• Screen to lens distance (mm) - 41
• Inter-lens distance (mm) - 60
• Screen vertical alignment - Bottom
• Try to lens-center distance (mm) - 37
• Distortion Coefficients - k1 0.2657 , k2 0
• FOV Angles - outer 50, inner 50, top 50, bottom 50

I use it with my LG G4 ( 5.5 inch screen )

I'm using the Bobovr Z4, which is the same as the Virtoba X5, and I'm getting a very sharp image with good 3D. Try the VR Calibration tool from the play store: https://play.google.com/store/apps/details?id=com.anrael.vrcc&hl=en Play around with the settings. For me, I had to use the max. IPD (67mm). K1 I'm using 0.3, K2 0.03 Just be aware that you need to copy those settings over to the official google cardboard tool to get a qr code that you can scan.

The lens correction distortion looks like it is bending the wrong way. The geometry calculation is breaking down at the corners and causing the cross like artifacts.

Try using generic Cardboard parameters to confirm and then work out why the params for your headset are causing a problem.

Try this calibration app: https://play.google.com/store/apps/details?id=com.anrael.vrcc

Interesting. I'm going to have to try this method and see how it goes. Up 'till now I've been using this tool and then transferring the values I settle on to the official Google viewer profile generator.

> think it may be incompatible with my face. I've got a big nose, and protruding brow, and I just can't get this thing to fit flush against my face. My forehead is right against the lenses, and they fog up almost immediately. It also feels like I need to push it down farther to actually look through the center of the lenses, but this ends up pinching my nose considerably.

The Fiit VR 2S is not very broadly facially compatible, so it's a love it or hate it headset. I hate it because I have the same sorts of problems with it that you do.

> nothing I've done with the sliders has prevented me from getting a double image somewhere. Even if I can get the very center in focus enough to be able to read text, everything just off of the center starts to diverge and give me a bit of a headache.

It's likely that you'll be able to improve this situation by creating your own viewer profile. You can do that by using a calibration tool like this to generate some values which you can then plug into Google's official viewer profile generator.

(tip: you should generally leave the field of view angles alone -- I've never been able to improve anything by using values other than 50)

This is going to require a whole lot of experimenting on your part, but it might be worth it.

> If there's a better low-cost headset, any recommendations? I was looking at the Bobo mini recently

I like the BoboVR Z4 Mini (aka the Virtoba X5 Elite) a whole lot better than the Fiit VR 2S, and it seems to be far more compatible with different facial structures. The built-in capacitive touch button is useful as well.

I don't like the feel of the faux-leather padding though (it's a subjective thing), which most of them seem to have these days, so I changed it out with the padding from my Fiit VR which I don't use :)

VR Box (version 1) - ~56 degrees, using a 5.5" phone. The plano-convex lens are really good, with a very sharp quality, and a very regular distortion. I had 3 cardboards (1 v1 and 2 v2), and like them, after using VR Box, even with a larger FOV, I can't use any of the cardboard anymore, the cardboard lens distort the image in a very irregular way. A nice app to test that and configure settings is VR Calibration for Cardboard

Are you using a Gear VR viewer profile for the cardboard apps? You can find some here, along with some relevant discussion. Or here, or here. Or even better (if you can be bothered), you can create your own using this and then this.

Any VR app you run outside of the Oculus Home environment is not optimized for the Gear VR (with the exception of apps installed using SideloadVR, which kinda have one foot in and one foot out), nor will it use the Gear VRs superior IMU/motion sensors. So all sorts of visual anomalies and head tracking issues are to be expected. Some you can fix, and some you can't.

You should also consider this and follow all of its instructions for the best Gear VR cardboard experience.

Every QR code I've found has been wrong for me, particularly those with low distortion coefficients, so I created my own using this and then this.

Tip: I found that it was important to physically set the inter-lens distance to match my interpupillary distance (you can measure it like this, although I just dropped into my local optometrist and had a pretty girl do it for me) before messing with anything else.

(no health-related concerns here)

Use this to get the right settings https://play.google.com/store/apps/details?id=com.anrael.vrcc then use profile generator to generate the correct profile

Hi :) After many-many failed attempts to get the correct parameters and/or QR codes for the Google Daydream V2 (2017) version finally found the perfect method for getting them:

1) If you have the Google Daydream V2 (2017) get the setting through NFC, then install [VR Calibration for Cardboard] from play store (https://play.google.com/store/apps/details?id=com.anrael.vrcc) and run it: it will display all the parameters received through the NFC from original VR set.

2) If you don't have NFC or it is not working or do not want to install anything go to Sites in VR find the Google Daydream V2 (2017) (http://www.sitesinvr.com/viewer/daydream2017/index.html) and at the end of the page you can find the QR code that they created (resulting from their LAB Test, slightly different from the original)

Original Google Daydream V2 (2017) Parameters received through NFC are as follows: -screen to lens distance: 40 -inter-lens distance: 64 -screen alignment: bottom -tray to lens-center distance: 34 -distortion coefficients: k1=0.4331; k2=-0.085 -FOV angles: outer, inner, top, bottom are all the same: 55

Sites in VR parameters resulting from their LAB Test for the Google Daydream V2 (2017) are as follows: -screen to lens distance: 40 -inter-lens distance: 64 -screen alignment: bottom -tray to lens-center distance: 34 -distortion coefficients: k1=0.4175; k2=0.0152 -FOV angles: outer, inner, top, bottom are all the same: 48

To create QR code for the upper values go to https://wwgc.firebaseapp.com/ and type the parameters in, then generate QR code.

https://play.google.com/store/apps/details?id=com.anrael.vrcc&hl=en

https://vr.google.com/cardboard/viewerprofilegenerator/

You're doing it all wrong.

Calibration: https://play.google.com/store/apps/details?id=com.anrael.vrcc&hl

Profile generator: https://wwgc.firebaseapp.com/

1) Measure your IPD: http://doc-ok.org/?p=898

2) Adjust your set-up in the calibrator and remember the values.

3) Enter the values in the profile generator. Scan the QR code and make fine adjustments to the values.

4) Generate a profile and scan the generated QR code in the Cardboard app.

Cardboard is a good platform (better than GearVR for porn) but what makes it good is the same reason it can be terrible, and that's the failure to make a customized profile adapted to your eyes and units.