Fig. 1. The sinusoidal phase error function sin（2φ（x））

Fig. 2. The phase error ε₀΄ at random phase shift error

Fig. 3. Interferograms at phase shift 20°

Fig. 4. The phase shift step retrieval error by self-tuning algorithm within ±10% calibration error

Fig. 5. The phase retrieval error by self-tuning algorithm within ±10% calibration error

Fig. 6. The phase retrieval error by Hariharan algorithm within ±10% calibration error

Fig. 7. The phase shift step retrieval error by self-tuning algorithm at smaller phase shift steps with same calibration error

Fig. 8. The phase retrieval error by self-tuning algorithm at smaller phase shift steps with same calibration error

Fig. 9. The phase retrieval error by Hariharan algorithm at smaller phase shift steps with same calibration error

Fig. 10. The phase retrieval error by self-tuning algorithm within 5% random phase shift error

Fig. 11. The phase retrieval error by Hariharan algorithm within 5% random phase shift error

Fig. 12. The phase error by self-tuning algorithm on a specific row of pixels

Fig. 13. The phase retrieval error by self-tuning algorithm at smaller phase shift steps with same random error

Fig. 14. The phase retrieval error by Hariharan algorithm at smaller phase shift steps with same random error