Annoying offset

[mcvic001]

hi,

we have been using tracking tools with a set of 12 cam since last year.
We track users inside a virtual reality system, with active glasses, so we use two optisync hubs.


We had some problems with phantom markers, but after an excellent calibration they drastically diminished.

Unfortunately, now we perceive an annoying offset that affects marker positions, and it varies along the room [about 4m x 2.5m x 2.5m]:
drawing in VR a line from one marker to another one in the center of the room datas seem correct,
but when we move along the room, an offset occurs, shifting the starting and ending point of the line in an uncorrect position.
Anyway the lenght of the line is always correct.


Has anybody an idea about what causes the problem?

[VincentG]

responding to email that was also sent into support.