Fig. 1. Incoherent self-interference digital holography system based on Michelson interferometer

Fig. 2. Object image. (a) The resolution target; (b) The enlarged image in the box in (a)

Fig. 3. Simulated imaging results of the resolution target under uniform light illumination. (a)~(c) Holograms with three phase shifts of the resolution target; (d) The reconstructed image; (e) The magnified image in the blue box in (d); (f) The intensity distribution curve of the blue dashed box in (e)

Fig. 4. The simulated imaging results of the resolution target under structured light illumination. Horizontal direction: (a1) Object image modulated by cosine grating; (a2) The reconstructed images; (a3) The intensity distribution curve of the blue dashed box in (a2);Vertical direction: (b1) Object image modulated by cosine grating; (b2) The reconstructed images; (b3) The intensity distribution curve of the blue dashed box in (b2); (c) The reconstructed image in both directions

Fig. 5. The imaging results of the resolution target under uniform light illumination. (a)~(c) Three holograms at different times; (d) The reconstructed image; (e) The magnified image in the blue box in (d); (f) The intensity distribution curve of the blue dashed box in (e)

Fig. 6. The imaging results of the resolution target under structured light illumination of different frequencies. k₀ = 20 lp/mm：(a1) The reconstruction image; (a2) The magnified image in the blue box in (a1); (a3) The intensity distribution curve of the blue dashed box in (a2);k₀ =40 lp/mm：(b1) The reconstruction image; (b2) The magnified image in the blue box in (b1); (b3) The intensity distribution curve of the blue dashed box in (b2)