Fig. 4.

Dynamic case: flowing beads phase analysis using the $\pi$-SMIM corroborating its high-speed imaging capabilities. (a) Example FOV, (b) successful phase reconstruction of the area within the black dashed rectangle (see Video 1 for full dynamic sequence), (c) $\pi$-hologram of selected region of interest, and (d) logarithmic modulus of the FT of the utilized $\pi$-hologram (overlapping conjugated complex amplitudes are clearly observable implying quasi on-axis regime). Three-dimensionally unwrapped phase profile of dynamic beads flowing into a water-filled counting chamber (Video 1, MOV, 1.15 MB [URL: https://doi.org/10.1117/1.JBO.24.9.096004.1]).