Fig. 1. Diagram of single-pixel imaging. (a) Traditional single-pixel imaging using rotating ground glass; (b) Computational single-pixel imaging

Fig. 2. Diagrams of optical path after exchanging position of detector and light source

Fig. 3. Classical setup of single-pixel imaging and resulting images. All images are reconstructed with a resolution of 128 pixel×128 pixel

Fig. 4. Diagram of normalized ghost imaging

Fig. 5. Schematic diagram of infrared single-pixel imaging of methane gas

Fig. 6. Result of infrared single-pixel imaging of methane gas

Fig. 7. Single-pixel imaging result at terahertz waveband

Fig. 8. Schematic diagram of 3D imaging based on multiple single-pixel detectors

Fig. 9. Reconstructions of single-pixel detectors at differet points of view

Fig. 10. Reconstructions after integrating the normal vectors and superimposing the reflectivity data

Fig. 11. Diagram of 3D Fourier single-pixel imaging system

Fig. 12. Experimental results of Fourier 3D single-pixel imaging

Fig. 13. 3D single-pixel imaging system based on digital grating

Fig. 14. Results of 3D single pixel imaging based on digital grating

Fig. 15. 3D reconstruction of a spherical surface and corresponding error

Fig. 16. (a) Schematic diagram of infrared 3D single-pixel imaging based on raster scanning; (b) Singe-pixel detection part includes a single-pixel detector, an imaging lens, a grating and a collecting lens

Fig. 17. Reconstructions of 2D fringe images and phase distribution using two detectors(The 3D reconstruction is obtained by overlaying data from both of the two detectors)