Fig. 1. The generation process of illumination light fields by the fiber laser array.

Fig. 2. Simulation results of illumination light fields of different arrays. (a₁)–(a₃) Array configurations: top to bottom, rectangle, hexagon, and Fermat spiral; (b₁)–(b₃) 3D $g^{(2)}$ distribution for each configuration; (c₁)–(c₃) $g^{(2)}$ distribution along the $u$-axis; (d₁)–(d₃) $g^{(2)}$ distribution along the $v$-axis; (e₁)–(e₃) vertical view of $g^{(2)}$ distribution.

Fig. 3. Imaging simulations of rectangle, hexagon, and Fermat spiral arrays. Left: binary “3-slits”; Right: grayscale “drone.” Reconstructed via DGI and CS-TV.

Fig. 4. Simulation results of $g^{(2)}$ for different $N$. (a₁)–(a₄) Array configs with different $N$; (b₁)–(b₄) 3D $g^{(2)}$ distributions; (c₁)–(c₄) vertical views for $g^{(2)}$ with different $N$.

Fig. 5. Simulation imaging results of different $N$.

Fig. 6. RMSEs of the images of different $N$.

Fig. 7. System schematic of SPI illuminated by the Fermat spiral fiber laser array.

Fig. 8. High-speed data synchronous acquisition system diagram. (a) 20 kHz synch signals; (b) the time-varying phase modulation attached to the beam by the phase modulator; (c) the acquired illumination light field; (d) the time-varying normalized light intensity values detected by the SPD.

Fig. 9. Results of 2000 acquired illumination light fields. (a) An acquired illumination light field; (b) the 3D distribution of $g^{(2)}$; (c) viewing the 3D distribution of $g^{(2)}$ from the positive direction of the $v$-axis; (d) viewing the 3D distribution of $g^{(2)}$ from the positive direction of the $u$-axis.

Fig. 10. Experimental imaging results. Images reconstructed by DGI, CS-TV, and UNN at different samples. The object is a transmissive “2.” The red text indicates the lowest samples for distinguishable imaging.

Fig. 11. The distribution of $g^{(2)}$ for different samples. (a₁)–(a₄) Viewing the 3D distribution of $g^{(2)}$ from the positive direction of the $v$-axis, (b₁)–(b₄) Viewing the 3D distribution of $g^{(2)}$ from the positive direction of the $u$-axis.

Fig. 12. SSIM values at different samples, with the $g^{(2)}(u,v;u_0,v_0)$ at 2000 samples serving as the reference.

Table 1. Count of Elements in g(2) Greater Than 1.2 and 1.15 Across Different Samples.