Smallest Face

• Automatic tracking initialisation when face is only 20 percent of total image width
• 6 DOF head tracking and recovery when face is only 10 percent of total image width

Largest Face

• Continues to track when face is so close, only half of it is visible

Head Rotations

• Tracking and recovery up to +/- 90° around neck axis (turn head from shoulder to shoulder)
• Tracking and recovery up to +/- 45° around nod axis (look up / look down)
• Tracking up to +/- 90° and recovery up to +/- 30° around tilt axis (lean left / right)

Gaze Rotations

• Eye rotations of +/- 45°

Recovery Time

• Tracking failure recovery times approximately 200ms for both head and eye measurements

Obscuration

• Tracking when up to 50% of face is obscured
• Recovery requires 80% of face to be visible

Wide Field-Of-View Configuration

• Camera field of view out to 45°
• Head tracking distance range from 0.5 to 1.4m
• Head tracking horizontal range up to 1.5m

In this configuration, head-position and rotation can be automatically tracked over large volumes, without calibration.

faceLAB "Classic" Configuration

• Camera field of view out to 30°
• Gaze tracking distance range from 0.5 to 1.1m
• Gaze tracking horizontal range up to 0.3m, vertical range up to 0.2m
• Head tracking distance range from 0.5 to 1.75m
• Head tracking horizontal range up to 1m
• Typical static accuracy of head measurement within +/- 1mm of translational error and +/- 1° of rotational error
• Typical static accuracy of gaze direction measurement within +/- 5 ° rotational error.

In this configuration, both head-pose and gaze tracking are possible. Gaze calibration is not required, but can be performed to remove any systematic bias. Resolution is not affected.

The specifications are similar to previous versions of faceLAB, with the exception that tracking recovery and robustness to large rotations is greatly improved.

Precision Gaze Configuration

• Camera field of view out to 30°
• Precision gaze tracking distance range from 0.5 to 0.8m
• Precision gaze horizontal range up to 0.25m, vertical range up to 0.15
• Conventional gaze tracking distance range from 0.8 to 1.1m
• Head tracking distance range from 0.5 to 1.4m
• Head tracking horizontal range up to 0.5m
• Typical static accuracy of gaze direction measurement within 1° rotational error
• Pupil diameter (independent left/right eyes)
• Eye vergence distance (meters);

In this configuration, both head-pose and gaze tracking are possible. Gaze tracking is more precise; with the trade-off that head-pose is a little more constrained. This configuration is recommended for indoor screen or simulator experiments, where accuracy is at a premium.

Eye Analysis Measurements

• PERCLOS fatigue assessment (day and night operation)
• Blink detection, including blink artefact correction for gaze direction, pupil diameter and vergence distance
• Blink rate (Hz), and mean period (secs)
• Saccade detection.

Analysis and Data Transmission

• Compatible with Eye Response Technologies GazeTracker™ analysis tool suite
• Simultaneous real-time and filtered tracking data available as user-definable disk log, TCP/IP or serial transfer (using SDK)
• Real-time output to screen provides comprehensive feedback to the operator
• 3D OpenGL World Model Editor/Viewer to assess interaction with environment
• Time-stamped ASCII output also available for use with common applications such as Microsoft Excel™, Matlab™, SPSS ™ etc
• Experiment-time synchronisation across multiple systems available via NTP.

Support

• Comprehensive colour illustrated manual
• Online help, web-based user group support services, phone and email support
• Portable software development kit (SDK) available for ease of data integration into custom applications/devices or simulators
• On-site customer training is also provided.

Vehicle and Simulator Versions

• Customisable packs are available for easy incorporation into test-cars, aircraft/vehicle simulators and immersive display areas. Real-time and analysis integration available from simulation vendors such as Oktal, Drivesafety and 5DT.

Video Overlay Display Kit (VOK)

• Enables display and superimposition of gaze point and head intersection on screen. This function is useful for simulator environments, web usability studies, post and real-time video analysis.