Table 3 System accuracy - 30° 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 | 0.308° | 0.322° | 0.446° | 0.333° | 0.407° | 0.526° |
2 | 0.262° | 0.329° | 0.421° | 0.355° | 0.316° | 0.475° |
3 | 0.366° | 0.424° | 0.561° | 0.359° | 0.480° | 0.600° |
4 | 0.317° | 0.432° | 0.536° | 0.355° | 0.454° | 0.576° |
5 | 0.469° | 0.424° | 0.632° | 0.409° | 0.553° | 0.687° |
6 | 0.449° | 0.395° | 0.598° | 0.521° | 0.468° | 0.701° |
mean | 0.362° | 0.388° | 0.532° | 0.389° | 0.446° | 0.594° |
SD | ±0.075° | ±0.046° | ±0.076° | ±0.064° | ±0.073° | ±0.081° |
RSD% | ±20.7% | ±11.8% | ±14.4% | ±16.3% | ±16.3% | ±13.6% |
Session 2 | Calibration grid | Test grid | ||||
User | RMSE x | RMSE y | RMSE ρ | RMSE x | RMSE y | RMSE ρ |
1 | 0.249° | 0.383° | 0.457° | 0.381° | 0.362° | 0.526° |
2 | 0.328° | 0.357° | 0.485° | 0.419° | 0.369° | 0.558° |
3 | 0.383° | 0.450° | 0.591° | 0.361° | 0.436° | 0.566° |
4 | 0.306° | 0.313° | 0.438° | 0.526° | 0.361° | 0.638° |
5 | 0.383° | 0.450° | 0.591° | 0.361° | 0.436° | 0.566° |
6 | 0.462° | 0.371° | 0.592° | 0.517° | 0.419° | 0.666° |
mean | 0.352° | 0.387° | 0.526° | 0.427° | 0.397° | 0.586° |
SD | ±0.067° | ±0.049° | ±0.067° | ±0.069° | ±0.034° | ±0.049° |
RSD% | ±19.2% | ±12.7% | ±12.8% | ±16.2% | ±8.4% | ±8.3% |
mean | 0.357° | 0.388° | 0.529° | 0.408° | 0.422° | 0.590° |
SD | ±0.071° | ±0.048° | ±0.072° | ±0.069° | ±0.062° | ±0.067° |
RSD% | ±20.0% | ±12.3% | ±13.6% | ±17.0% | ±14.6% | ±11.3% |