Surface Shape Detection with a Single Far-Field Intensity by Combined Amplitude and Phase Retrieval

Table 7

Recovery accuracy of the method under background errors.

SNR (dB)	40	45	50	55	60	Inf
RMS of δr (mm)	0.281	0.200	0.153	0.139	0.132	0.127
RMS of δro (mm)	0.135	0.072	0.050	0.038	0.035	0.034
RMS of δre (mm)	0.246	0.187	0.145	0.134	0.127	0.122