How do the coordinates of Hololens 2 and Unity Camera correspond?

Joy Zhang 20

I'm using an infrared positioning device to make surgical assistance software. I need to match the coordinate system of the infrared device with the Unity coordinate system, but I don't know where the Camera position in Unity corresponds to on the Hololens device. Where can I get information about it?

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Accepted answer

Zuocheng Wang - MSFT 3,091 Reputation points Microsoft Vendor

2023-09-19T09:54:42.7933333+00:00

Hello, Welcome to Microsoft Q&A,

By default, the Main Camera's position should be set to (0, 0, 0), which refers to the center of the HoloLens device, which is the position of the user's head.

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1 person found this answer helpful.
Joy Zhang 20 Reputation points

2023-09-20T00:57:19.5033333+00:00

Thanks for your answer, but that's still too vague a description.

I had no way of knowing exactly where the center of the Hololens device was, and the user's head position was not fixed.

I need millimeter accuracy. Is there any way to achieve this?

Zuocheng Wang - MSFT 3,091 Reputation points Microsoft Vendor

2023-09-21T06:28:03.56+00:00

Sorry, HoloLens does not currently provide an accurate physics center.

Joy Zhang 20 Reputation points

2023-09-21T06:58:47.1266667+00:00

I understand, but it raises the question of how the Hololens accurately projects the correct image without knowledge of the Unity camera's position relative to the holographic lenses.
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