Fig. 4

Corresponding simulation results of grid and diffuser channels under incoherent illumination. No image can be reconstructed from recorded patterns by either deep learning or deconvolution for both grids. There is no valid channel in phase-grids to transmit information, although the system constructed by it is shift-invariant. Row A: the PSFs of different systems (Grid I, Grid II, and diffuser). Row B: the calculated convolution of digit “5” and the corresponding PSFs. Row C: the corresponding recorded patterns by the camera. Rows D: images extracted from Row C via deep learning. Row E: images from Row C via deconvolution. Rows F: images from Row B via deep learning. Row G: images from Row B via deconvolution. The red dash square inserts show the zoom-in of original areas correspondingly, too