Table 1 Modulation and intensity thresholds calculated for two objects with different projector defocusing levels
From: Improved 3D measurement with a novel preprocessing method in DFP
Object | Projector defocusing conditions | Modulation thresholds | Intensity threshold | |
|---|---|---|---|---|
t 1 | t 2 | t in | ||
Object1 | Nearly focused | 8 | 53 | − 1.5 |
Slightly defocused | 8 | 44 | − 2.5 | |
Strongly defocused | 4 | 22 | − 2.5 | |
Object2 | Nearly focused | 15 | 49 | − 1.5 |
Slightly defocused | 7 | 37 | − 3.5 | |
Strongly defocused | 7 | 25 | − 3.5 | |