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Vive Tracker coordinate system problem in UE4

I was trying to make a mixed reality video and attached Vive Tracker to real world camera.

Like this: alt text

I already made a blueprint that camera position and rotation are tracked by Vive motion controller and I was simply trying to switch it to the tracker. But the result was completely different.

I found out the reason is that coordinate system of motion controller is Z-up, and the tracker is Y-up. I can not understand why HTC made it this way. They say "Make mixed reality video with Vive tracker on camera" in their website but there is no documentation or tutorial.

I've tried many ways for fixing this problem but I couldn't solve by myself. Please help me.

Product Version: UE 4.19
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asked Jul 18 '18 at 03:23 AM in Using UE4

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avatar image aliasense Aug 19 '18 at 11:49 PM

Any solution?

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