Fig. 1. Optical path layout of simultaneous phase-shifting interferometric microscopy experiment

Fig. 2. Processing results of simulated microvascular interferogram. (a) One group of four phase-shifting interferogram; (b) unwrapping phase

Fig. 3. Results of simulated microvascular fitting residual extraction. (a) Fitting wavefront; (b) wavefront residual

Fig. 4. Phase of bovine red blood cell. (a) Three-dimensional height distribution; (b) cross-sectional height curve

Fig. 5. Three-dimensional height distribution of red blood cells in partially simulated microvessels. (a) Red blood cell I; (b) red blood cell II; (c) red blood cell III; (d) red blood cell IV

Fig. 6. Characteristic volume model of red blood cell. (a) Three-dimensional height distribution of red blood cell; (b) two-dimensional height distribution of red blood cell

Fig. 7. Adjacent two frames of original pictures in the process of detecting red blood cell flow rate in microvessels. (a) First-frame photo; (b) second-frame photo

Fig. 8. Phase of characteristic red blood cells extracted from the wavefront residuals of simulated microvessels. (a) First-frame processing result; (b) second-frame processing result

Fig. 9. Phase change of red blood cells extracted from the wavefront residuals of adjacent 8 pictures