Fig. 1. Schematic of improved ghost imaging scheme

Fig. 2. Phase retrieval results of double slits under different b. (a) b=0 μm; (b) b=2 μm; (c) b=4 μm; (d) b=6 μm; (e) b=8 μm; (f) b=12 μm; (g) b=16 μm; (h) b=20 μm

Fig. 3. Phase revival results of Gaussian phase objects under different b. (a) b=0 μm; (b) b=2 μm; (c) b=4 μm; (d) b=6 μm; (e) b=8 μm; (f) b=12 μm; (g) b=16 μm; (h) b=20 μm

Fig. 4. Difference between reconstructed phase and original phase. (a) Double slits; (b) Gaussian phase transmission plate

Fig. 5. Phase revival results of double slits under different conditions. (a) Different au ; (b) different Δ