Fig. 1. One-dimensional spectrum of moiré graph

Fig. 2. Interferogram and calculation results. (a) Interferogram with carrier wave; (b) difference between real and virtual phases calculated by DMP method

Fig. 3. Phase retrieval error of two methods. (a) DMP method; (b) DMN method

Fig. 4. Phase retrieval errors of four methods under different phase gradients. (a) E_RMS; (b) E_PV

Fig. 5. Phase retrieval errors of four methods under different image noises. (a) Gaussian noise; (b) Poisson noise; (c) salt & pepper noise

Fig. 6. Schematic of experimental device

Fig. 7. Wavefront phase. (a) Real phase; (b) virtual phase

Fig. 8. Phase difference between real and virtual phases calculated by DMP method. (a) Global distribution; (b) partial magnification

Fig. 9. Calculation error distribution of two methods. (a) DMP method; (b) DMN method