Fig. 1. Measurement system diagram

Fig. 2. Phase code unwrapping flowchart

Fig. 3. Two-step coded phase and wrapped phase of a row

Fig. 4. (a) Wrapped phase and the coded phase of a row; (b) Segmented fringe orderkof a row (a) 某一行的包裹相位和编码相位； (b) 某一行的分段条纹级次

Fig. 5. Schematic diagram of a segmented fringe order connecting a row

Fig. 6. Minimum phase acquisition step phase map

Fig. 7. Improved two-step phase coding schematic

Fig. 8. Quantized phase coding method

Fig. 9. Fringe order calculation process

Fig. 10. Initial quantization encoding phase of a row

Fig. 11. Segment quantization phase decoding principle. (a) Segmented fringe order and reverse segmented fringe order; (b) Recovered absolute phase

Fig. 12. Generated fringe order graph

Fig. 13. Measured step phase and improved step phase of a row

Fig. 14. Schematic diagram of the implementation process of cycle correction method

Fig. 15. Schematic diagram of n=2 phase shift coding method. (a) Phase-shifting fringe order; (b)Wrapped phase and fringe order of a row

Fig. 16. (a) Wrapping phase of a row; (b) Step phase of a row

Fig. 17. Three - dimensional measurement result of the blade

Fig. 18. Result diagram of an isolated object

Fig. 19. Measurement results of the statue

Fig. 20. Measurement results of isolated objects

Fig. 21. Three-dimensional measurement of complex objects

Fig. 22. Three - dimensional measurement result of the mask