Fig. 1. (a) Schematic diagram of the Nipkow disk^[47]; (b) Schematic diagram of the mask used in spectroscopic cameras in the 1970s^[61]

Fig. 2. (a) Schematic diagram of Young's double slit interference experiment; (b) Schematic diagram of the Hanbury Brown-Twiss stellar interferometer

Fig. 3. Schematic diagram of correlation imaging^[65]

Fig. 4. Schematic diagram of imaging high-speed moving target based on single-pixel detector^[68]

Fig. 5. Schematic diagram of ghost cytometry^[69]

Fig. 6. Schematic diagram of ghost imaging LiDAR using push-broom scanning^[70]

Fig. 7. Experimental setup of correlation imaging based on a rotating mask^[16]

Fig. 8. Schematic diagram of the mask used in the experiment of Hayasaki et al^[51]

Fig. 9. (a) Schematic diagram of the mask based on cyclic S matrix used in the Hahamovich et al experiment; (b) Part results of the experiment by Hahamovich et al^[52]

Fig. 10. Schematic diagram of the mask used in the experiment of Vallés et al^[50]

Fig. 11. Fig. (a) and Fig. (b) are schematic diagrams of masks used in the experiment of Jiang et al; (c) Simulation and experimental results^[16]

Fig. 12. Experimental results of multispectral imaging by Jiang et al