Fig. 1. Description of the SPCI process based on symmetrically related random phases as scattering media. (a) Illustration of SPCI measurement utilizing scattering media (random phases). (b) Mathematical description of SPCI utilizing symmetrically related random phases. (c) Sample curve of the signal vector.

Fig. 2. SPCI outcomes with varying quantities of scattering media (random phases). (a) The presence of multiple sequential loading random phases as scattering media. N is the number of random phases. (b) The simulated SPCI results obtained by the imaging target “F” using varying quantities of random phases. The numbers on the graph are N values. (c) The simulated SPCI results obtained by the imaging target “smiley face” using varying quantities of random phases. The numbers on the graph are N values. (d) The simulated SPCI results obtained by the imaging target “dragon” using varying quantities of random phases. The numbers on the graph are N values.

Fig. 3. Quantitative evaluation of SPCI results with varying quantities of scattering media (random phases). (a) The SNR and SSIM of SPCI results obtained by the imaging target letter “F” using varying quantities of random phases. (b) The SNR and SSIM of SPCI results obtained by the imaging target “smiley face” using varying quantities of random phases. (c) The SNR and SSIM of SPCI results obtained by the imaging target “dragon” using varying quantities of random phases.

Fig. 4. Dual-path thermal-optical SPCI by symmetrically related random phases as scattering media. (a) The schematic diagram of the system includes the laser, beam expander (BE), spatial light modulator (SLM), lens (L1, L2, and L3), beam splitter (BS), imaging target, single-pixel detector (SPD), and charge-coupled device (CCD). (b) The physical drawing of the system. (c) The photograph of the imaging target. (d) The imaging results obtained by the traditional method. (e) The imaging results obtained by our method.

Fig. 5. Single-path computational SPCI by symmetrically related random phases as scattering media. (a) The schematic diagram of the system includes the laser, beam expander (BE), spatial light modulator (SLM), lens (L1, and L2), imaging target, and single-pixel detector (SPD). (b) The physical drawing of the system. (c) The photograph of the imaging target. (d) The imaging results obtained by the traditional method. (e) The imaging results obtained by our method.