Fig. 1. Schematic diagram of monocular structured light FPP measurement

Fig. 2. Flow chart of fast calibration algorithm

Fig. 3. Schematic diagram of design imaging of measurement system optical path

Fig. 4. System optical path diagram

Fig. 5. Point cloud diagram of stereo calibration plate and measured standard plane

Fig. 6. Point cloud errors and distribution of small field of view measurement results

Fig. 7. Point cloud errors and distribution of traditional method measurement results

Fig. 8. Three-dimensional point cloud map of fingerprint measured by system

Fig. 9. Three-dimensional shape of fingerprint surface

Fig. 10. Detailed point cloud from fingerprint 3D point cloud for measurement

Fig. 11. Three-dimensional feature data of ridge line in detailed point cloud