Explicit Filtering Based Low-Dose Differential Phase Reconstruction Algorithm with the Grating Interferometry

Figure 1

The grating interferometry. (a) Talbot effect based interferometry with coherent source; (b) Talbot-Lau effect based interferometry with incoherent source; the sample intensity oscillation curve (the dash line curve) and the background intensity oscillation curve (the solid line curve) measured with 10 steps during the phase stepping approach with the grating interferometer in Tsinghua University, China.

(a)

(b)

(c)