Fig. 4
From: All-optical complex field imaging using diffractive processors
Analysis of the impact of input phase contrast on the imaging performance of diffractive complex field imagers. a Blind testing amplitude and phase PSNR values of diffractive complex imager models trained using complex objects constructed with different values of training phase contrast parameter \({\alpha }_{{\rm{tr}}}\), reported as a function of the phase contrast parameter used in testing (\({\alpha }_{{\rm{test}}})\). b Exemplary output amplitude and phase images created by the diffractive complex field imager model shown in Fig. 2, which was trained using \({\alpha }_{{\rm{tr}}}\) = 1, but tested here using \({\alpha }_{{\rm{test}}}\) = 1.5. c Same as b, except that the diffractive complex field imager model was trained using \({\alpha }_{{\rm{tr}}}\) = 1.5
