Fig. 1. Flowchart of PnP-ADMM rapid reconstruction algorithm. (a) Flow chart; (b) PnP-ADMM algorithm

Fig. 2. Comparison of numerical simulation reconstruction results of different algorithms. (a) Original images; (b) WQR-OMP; (c) TVAL3; (d) PnP-ADMM (Prox); (e) PnP-ADMM (Shrinkage); (f) PnP-ADMM (TV)

Fig. 3. Comparison of reconstruction performance for different algorithms. (a) PSNR; (b) SSIM; (c) reconstruction time

Fig. 4. Reconstruction results of PnP-ADMM algorithm under different sampling rates. (a) Lena; (b) Peppers; (c) LOGO; (d) House; (e) USAF-1951 resolution test chart

Fig. 5. Comparison of reconstruction performance of PnP-ADMM algorithm under different sampling rates. PSNR of (a) Prox, (b) Shrinkage, and (c) TV; SSIM of (d) Prox, (e) Shrinkage, and (f) TV

Fig. 6. Compressive sampling hardware architecture of PnP-ADMM reconstruction algorithm

Fig. 7. SPI system based on PnP-ADMM SOC (imaging distance is 300 cm). (a) Single-pixel detector and collimating lens; (b) DMD and imaging reconstruction FPGA

Fig. 8. Experimental reconstruction results of PnP-ADMM SOC single-pixel imaging system under different sampling rates. (a) LOGO; (b) USAF-1951 resolution test chart; (c) checkerboard

Fig. 9. Experimental reconstruction results of PnP-ADMM SOC single-pixel imaging system under different imaging distances. (a) LOGO; (b) USAF-1951 resolution test chart; (c) checkerboard