Making a measurement with Tobii

The eye tracker data is collected together with the marker data in QTM and can be reprocessed and exported together with the other data, see chapter Process and export Tobii gaze vector data. Follow these steps to capture eye tracker data in QTM:

1. Make sure that the Tobii eye tracker device(s) are connected and correctly set up in QTM.

2. Make sure that you have activated Calculate gaze vector data and Calculate 6DOF on the Processing page in Project options.

3. Calibrate the glasses using the Tobii calibration card.

   • For Tobii Glasses 2, the calibration can be done using the Tobii Pro Glasses Controller application or via the Input device settings page in QTM, see chapter Setting up Tobii Pro Glasses 2 in QTM.

   • For Tobii Glasses 3, the calibration can be done using the Glasses 3 Controller application or via the web interface, see chapter Setting up Tobii Pro Glasses 3 in QTM.

4. Start preview in QTM and the gaze vector is displayed in the 3D view window as soon as the 6DOF body is identified.

5. You can also view the gaze vector data in the Data info window, see chapter Tobii data in QTM.

6. The eye tracker data is captured automatically with the other data in QTM.

   • When not using hardware synchronization the capture is started via software, leading to a certain latency of the recorded Tobii eye tracker data. The latency can be compensated for the gaze vector calculation in QTM, see chapter Tips for compensating latency.

   • When using hardware synchronization, the capture is started simultaneously with the mocap data via a sync cable. For instruction on how to set up hardware synchronization, see chapters Setting up hardware synchronization or Setting up hardware synchronization with Tobii Pro Glasses 3.