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Classification of gaze scans based on the size of the head movement component and the subject’s distance to the intersection.
| Distance to Intersection [m] | Size of Head movement [°] | Classification of Scan |
|---|---|---|
| 100 – 50 | ≥ 4 | head+eye |
| < 4 | eye-only | |
| 50 – 20 | ≥ 6 | head+eye |
| < 6 | eye-only | |
| 20 – 0 | ≥10 | head+eye |
| < 10 | eye-only |
