I have a working app that uses Vuforia markers to precisely define a coordinate system in the app. That works really well. Now we asked Vuforia what the license fee would be to use this in production and the answer was ... lets say outrageous. So I'm tasked with replacing Vuforia but should use the existing markers if possible. I've looked at some different solutions like https://github.com/EnoxSoftware/HoloLensWithOpenCVForUnityExample https://github.com/qian256/HoloLensARToolKit and some others. But the results so far are pretty underwhelming. Mostly it's low level interfaces, unstable tracking and low precision. The best result so far was that HoloLensARToolKit thing but that has location issues I can't seem to fix in short time. So has anyone used something other than Vuforia for marker recognition that works with acceptable precision and can point me in the right direction?