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Table 4 System accuracy - 60° between IR lights and camera

From: A free geometry model-independent neural eye-gaze tracking system

Session 1   Calibration grid    Test grid  
User RMSEx RMSEy RMSEρ RMSEx RMSEy RMSEρ
1 0.305° 0.328° 0.448° 0.433° 0.259° 0.505°
2 0.426° 0.382° 0.573° 0.513° 0.495° 0.713°
3 0.279° 0.367° 0.461° 0.347° 0.350° 0.493°
4 0.386° 0.479° 0.615° 0.281° 0.511° 0.583°
5 0.546° 0.352° 0.649° 0.487° 0.429° 0.649°
6 0.537° 0.440° 0.694° 0.488° 0.506° 0.703°
mean 0.413° 0.391° 0.573° 0.425° 0.425° 0.608°
SD ±0.103° ±0.052° ±0.092° ±0.084° ±0.093° ±0.088°
RSD% ±24.9% ±13.3% ±16.0% ±19.8% ±22.0% ±14.4%
Session 2   Calibration grid    Test grid  
User RMSE x RMSE y RMSE ρ RMSE x RMSE y RMSE ρ
1 0.336° 0.307° 0.455° 0.434° 0.342° 0.552°
2 0.348° 0.291° 0.453° 0.304° 0.388° 0.493°
3 0.298° 0.406° 0.504° 0.289° 0.475° 0.556°
4 0.367° 0.286° 0.465° 0.374° 0.397° 0.546°
5 0.440° 0.358° 0.567° 0.476° 0.474° 0.672°
6 0.433° 0.452° 0.626° 0.524° 0.490° 0.717°
mean 0.370° 0.350° 0.512° 0.400° 0.427° 0.589°
SD ±0.051° ±0.062° ±0.065° ±0.086° ±0.055° ±0.078°
RSD% ±13.8% ±17.7% ±12.6% ±21.5% ±12.9% ±13.3%
mean 0.392° 0.371° 0.542° 0.413° 0.426° 0.598°
SD ±0.084° ±0.061° ±0.085° ±0.086° ±0.077° ±0.084°
RSD% ±21.5% ±16.4% ±15.7% ±20.8% ±18.0% ±14.0%