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% |