Camera preview is not working or not showing the correct picture
The camera index allows the user to selects the camera used by the AdHawk Hub when there are multiple cameras connected to a system (e.g. Webcam). The index of the AdHawk front facing camera may be different on each PC. If the front facing camera is not displayed by default, then another index should be tried until the front facing camera from the AdHawk glasses is displayed.
Poor eye tracking performance
If the eye tracking output is unstable or behaving erratically, the AdHawk Hub provides a set of tools to troubleshoot and eliminate the problem. We recommend that you follow these steps under guidance from the AdHawk Support team.
The troubleshooting tools can be enabled in the settings dialog. Go to File -> Settings on Windows. Click OK or Apply to save the changes. You should see the Tune tab appear at the top of the main window.
Eye tracking signals
The signals button in the bottom right corner of the Track tab visualizes the incoming eye tracking signal and demonstrates how well the system is detecting the relevant features. The eye tracking signals should be centered when looking straight ahead and should be free of noise on the edges of the screen similar to the example shown below.
Each detector is assigned a distinct color to identify its particular signals. PD1-PD6 represent the signals from the glint detectors. Pupil represents the signal from the pupil detector.
The pulses show the raw signal being detected by our eye tracking system. These pulses are shown as patterns of semi-transparent lines (each line representing a pulse).
The features show the processed eye tracking signal used by the calibration process. The center of glint and pupil features are identified using dots. The pupil signal (pink dot) also shows the ellipse representing the size and orientation of the pupil.
AdHawk’s eye tracking system provides several configuration parameters to optimize the eye tracking experience for different individuals. The Auto-Tune function automatically detects the optimal parameters for an individual by performing an initial scan of their eye. An Auto-tune is automatically performed during a Quick Start and should always be run with every new user who puts on the glasses.
When performing an Auto-tune, ensure that the user’s gaze is fixed directly ahead until the scan is complete.
After successful completion of the Auto-tune function, the eye tracking signals should appear centered on the screen (see above).
Eye tracking signals not centered
If the eye tracking signals are not centered (as seen in the window), try running another Auto-tune.
Eye tracking signals are noisy
If there are additional signals outside of the glint and pupil regions, the brightness of the eye tracking sensors may be adjusted to reduce the noise.
Pupil outline is not visible
The purple pupil signal should include the outline and the center of the pupil. If the pupil outline and center do not appear on the screen, repeat Auto-tune. If there is still no signal generate a bug report and contact AdHawk support.
Please contact AdHawk support (firstname.lastname@example.org) for additional assistance.
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