
212 ◾ Gannavarpu Rajshekhar, Sai Siva Gorthi, and Pramod Rastogi
Further, we analyze the practical utility of the CPF technique for a
DHI experiment. A circularly clamped object was subjected to central
loading, and two holograms were digitally recorded before and after
deformation. The complex amplitudes were obtained using the numer-
ical reconstruction based on the discrete Fresnel transform, as dis-
cussed in Section 6.2. The interference field signal was then obtained
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