We have decided to phase out the Mixed Reality Forums over the next few months in favor of other ways to connect with us.
The first way we want to connect with you is our mixed reality developer program, which you can sign up for at https://aka.ms/IWantMR.
The plan between now and the beginning of May is to clean up old, unanswered questions that are no longer relevant. The forums will remain open and usable.
On May 1st we will be locking the forums to new posts and replies. They will remain available for another three months for the purposes of searching them, and then they will be closed altogether on August 1st.
So, where does that leave our awesome community to ask questions? Well, there are a few places we want to engage with you. For technical questions, please use Stack Overflow, and tag your questions using either hololens or windows-mixed-reality. If you want to join in discussions, please do so in the HoloDevelopers Slack, which you can join by going to https://aka.ms/holodevelopers. And always feel free to hit us up on Twitter @MxdRealityDev.
Precision of spatial mapping
I have a question regarding the precision of the spatial mapping mesh. Often when I watch the mapping in unity the room gets recognized quite quickly, but some of the surfaces are off, sometimes even up to a meter. In some cases I scan a chair and the mesh fits fine, then I wander around in the room and come back to the same chair which was not moved in between, and the chair's mesh is off by a meter to one side. The whole room is usually not affected though, so it will not fix by adjusting the whole mesh, but it will lengthily rebuild the surfaces in question.
This does affect world anchors as well, which is annoying when I put effort into accurately placing a hologram in relation to my real room, and the next time I open the app it has moved by a meter to either side.
I attach some pictures. In the first one you can see a wall that is off by maybe 50 centimeters to the left. The second picture shows the room mesh from the device portal, and you can see a wall and on the ground the remains where this same wall got placed before and then was corrected.
Is this normal behaviour? Can I do anything to improve this? Are there any official statements about the precision of the scanned room?
I did run the sensor calibration various times. The room in question is quite large, I would estimate maybe 200 square meters, if this makes a difference.