World Coordinate Normalization

If, after calibration you find that OpenPTrack's world coordinates do not match what is needed for your visualization or interactive system, the coordinate system can be changed manually. We have found that using three reference points works best, with one of the points being 0,0. To change the coordinates:

First, launch roslaunch detection detection_node_<sensor_id>.launch for each sensor in your system. Once all the sensors in your network are detecting roslaunch opt_calibration opt_define_reference_frame.launch Then launch roslaunch detection detection_node_<sensor_id>.launch for each sensor in your system.

3.        right click to see next imager
   

4.        left you select a point in the image to set the coordinate
   

5.        The terminal window will walk you through the rest of the process
   

6.        Distribute the calibration file as normal