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## How do I get an accurate floor calibration?

Level 5
I'm building a room scale VR game where people stand and move around in the play space. I have the Oculus Touch controllers and two cameras. The cameras are mounted on either side of my desk, with about 5 feet of distance between them. The cameras are tilted about 5 degrees upwards from a perfectly horizontal position.

In the development of my game, I'm creating my VR character and orienting my tracking origin to the floor of the play space. I set my height at 6'1 in the room setup. When I'm standing at full height in my room, the real world floor does not match the game world floor. It feels like there is about 10-20 centimeters of vertical offset, where the game floor is higher than the play space floor. This makes me feel taller in the game than I actually am.

I was tempted to just nudge the VR camera down until I hit the correct height, but it is a dirty hack / work around which could potentially cause other players to be shorter than they really are because their room calibration is correct. So, this feels like it should be a preference setting or calibration process which happens during the room setup. The camera's people have mounted in their play area may vary in height from the floor, so we shouldn't make any assumptions about default camera height from floor.

I know with the Vive, a part of their setup process is to have the player place their HMD on the ground and then the floor is calibrated from that position.
2 REPLIES 2
Level 11

Slayemin said:

I know with the Vive, a part of their setup process is to have the player place their HMD on the ground and then the floor is calibrated from that position.

I think the rift takes the height you've set and then places the floor that height below the HMD(Or maybe more accurately places the view that height above the floor?)

So if the game floor is 20cm too high then add 20cm to your height?
Level 9
maybe the error is caused by the distance between the centre of your eyes and the top of your head, which is the point at which stature is normally measured.

If the setup just uses your height as the distance that your eyes are from the virtual floor, then you would appear to be taller than you are.

Maybe try inputting the height of your eyes from the floor into the setup and see if that works.