Figure 2: Comparisons of the reconstruction methods.

(a) Initial greyscale object and (b) a typical output speckle figure after the opaque medium. (c, f) Experimental images obtained with one realization using, respectively, phase conjugation and MSO operator; (d, e, g) experimental images averaging over 40 'virtual realizations' using, respectively, inverse matrix, phase conjugation and MSO operator. Values in insets are the correlation with the object a. (h) Correlation coefficient between E_img and E_obj as a function of (line) and singular value distribution of K_obs (bars). Results are obtained averaging over 100 'virtual realizations' of disorder, and both and singular values share the same scale on the abscissa axis.