marker points are rotating up side down !

[twister]

Hi every1,
After calibration and before recording my marker points are rotating up side down !!! this mean all markers are rotating 180 dagree. beside each camera before recording shows XYZ of marker points are fine. so whats the problem?

[VincentG]

Have you set the ground plane, using the calibration square?

[twister]

Thanks Vincent for your support,there was problem with calibration square as you said!
Best Regards